Surface treatment device and surface treatment process for lubrication-free sprocket processing

Abstract

The present invention discloses a surface treatment device and a surface treatment process for lubrication-free sprocket processing, comprising a base, wherein two support rods are fixedly connected at the bottom of the base near the left and right sides, the two support rods are arranged front and back, the top of the base is fixedly connected with an L-shaped plate, the bottom of the L-shaped plate is fixedly connected with an electric telescopic rod, the bottom end of the electric telescopic rod is fixedly connected with a box body, the inner cavity of the box body is provided with a support plate, the left and right sides of the support plate are fixedly connected to the inner cavity of the box body, the top of the support plate is fixedly connected with a motor, the fan blades are driven to rotate by the motor, and the rotation of the fan blades drives air flow, so that impurities and debris are sucked into the air duct through the suction holes at the bottom of the suction cup, and are transported to the collection box through the air duct, so as to prevent the splashing of debris from causing harm to the surrounding personnel, thereby greatly reducing the danger of the device during operation.

Description

Technical Field

[0001] The present invention relates to the technical field of sprocket processing, in particular to a surface treatment device and a surface treatment process for lubrication-free sprocket processing. Background Art

[0002] A sprocket is a wheel with cogs and sprocket teeth, which is used to mesh with blocks with accurate pitch on link chains or cables. A lubrication-free sprocket is a type of sprocket. After the lubrication-free sprocket is processed, the surface of the lubrication-free sprocket will be oxidized by gases in the air, thereby generating various oxides and other impurities, which will affect the next processing of the sprocket. Therefore, a surface treatment device is needed to treat the sprocket surface. Most existing surface treatment devices perform operations such as grinding and polishing on the sprocket surface to remove impurities. A large amount of debris will be generated in the process, which will splash to the surrounding area under the pressure of the grinding wheel, thereby causing harm to people around. Moreover, the existing surface treatment device can only treat the sprocket surface, but cannot protect the treated sprocket surface, so that the treated sprocket will still be oxidized and generate impurities. Summary of the Invention

[0003] The technical problem solved by the present invention is to overcome the defects of the prior art such as high risk and poor treatment effect, and provide a surface treatment device and surface treatment process for lubrication-free sprocket processing, which have the characteristics of low risk and good treatment effect.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a surface treatment device for lubrication-free sprocket processing, comprising a base, wherein the bottom of the base is fixedly connected to two support rods near the left and right sides, and the two support rods are arranged front and back, the top of the base is fixedly connected to an L-shaped plate, the bottom of the L-shaped plate is fixedly connected to an electric telescopic rod, the bottom end of the electric telescopic rod is fixedly connected to a box body, a support plate is provided in the inner cavity of the box body, the left and right sides of the support plate are fixedly connected to the inner cavity of the box body, the top of the support plate is fixedly connected to a motor, and the power output end at the bottom of the motor is fixedly connected to a rotating shaft, an air duct is provided below the support plate, the bottom end of the air duct passes through the bottom of the box body and extends to the bottom of the box body, the right side of the air duct passes through the right side of the box body, and the top of the air duct The top of the air duct is provided with a first opening, the inner cavity of the first opening is fixedly connected to the first bearing, the bottom end of the rotating shaft passes through the inner cavity of the first bearing and is inserted into the inner cavity of the air duct, a plurality of fan blades are fixedly connected to the outside of the rotating shaft, a suction cup is provided under the air duct, a second opening is provided on the top of the suction cup, the inner cavity of the second opening is fixedly connected to the second bearing, the bottom end of the air duct is inserted into the inner cavity of the second bearing, the bottom end of the rotating shaft extends to the inner cavity of the suction cup and is fixedly connected to the bottom of the inner cavity of the suction cup, a plurality of evenly distributed suction holes are provided at the bottom of the suction cup, a wire brush is fixedly connected to the bottom of the suction cup, a collecting box is fixedly connected to the right side of the box body, a plurality of air outlets are provided on the top of the collecting box, a discharge port is provided on the right side of the collecting box, and the right side of the collecting box is located at the discharge port A movable door is movably connected to the opening by a hinge, and a handle is fixedly connected to the right side of the movable door near the bottom. The right end of the air duct passes through the left side of the collection box and extends to the inner cavity of the collection box. An operating table is provided below the suction cup, and the operating table is fixedly connected to the top of the base. A slot is provided on the top of the operating table, and a first threaded rod and a second threaded rod are provided near the front and rear sides of the slotted inner cavity. The first threaded rod and the second threaded rod are arranged left and right, and the first threaded rod is fixedly connected to the second threaded rod through a connecting rod. The left end of the first threaded rod is movably connected to the left side of the slotted inner cavity through a fourth bearing. A third opening is provided on the right side of the operating table, and the inner cavity of the third opening is fixedly connected to a third bearing. The right end of the second threaded rod passes through the third bearing and is fixed The lever is pivotally connected to the side panel that is located at the top of the L-shaped plate, and the lever is pivotally connected to the side panel that is located at the top of the L-shaped plate. The lever is pivotally connected to the side panel that is located at the top of the L-shaped plate. The lever is pivotally connected to the side panel that is located at the top of the L-shaped plate. A feed pipe is provided near the bottom of the rear side of the spray box, and the bottom end of the feed pipe passes through the rear side of the spray box. A water pump is fixedly connected to the top of the spray box, and the bottom end of the water suction pipe on the rear side of the water pump passes through the top of the spray box and extends to the inner cavity of the spray box. The front end of the water outlet pipe on the front side of the water pump passes through the L-shaped plate.The left side of the suction cup is fixedly connected to a nozzle through a connecting block, the top of the nozzle is fixedly connected to a feed pipe, and the end of the feed pipe away from the nozzle is fixedly connected to the water outlet pipe.

[0005] Preferably, the plurality of fan blades are arranged in three layers from top to bottom, and the fan blades in each layer are distributed in an array around the rotating shaft.

[0006] Preferably, the feed pipe is a hose.

[0007] Preferably, the threads on the first threaded rod and the second threaded rod are opposite, and the inner cavities of the sliding holes of the movable blocks respectively located on the first threaded rod and the second threaded rod are respectively provided with threads matching the first threaded rod and the second threaded rod.

[0008] Preferably, the slotted inner cavity is provided with a slide groove on both the front and rear sides, and the four movable blocks are fixedly connected to a slider on one side close to the slide groove, and the slider is inserted into the inner cavity of the slide groove on one side close to the slide groove.

[0009] Preferably, the slotted inner cavity is provided with a turntable, which is located between two clamping plates. A circular hole is provided at the bottom of the slotted inner cavity. A vertical rod is fixedly connected to the bottom of the turntable. The bottom end of the vertical rod is inserted into the circular hole inner cavity and fixedly connected to a fixing plate. A spring is fixedly connected to the bottom of the fixing plate, and the bottom of the spring is fixedly connected to the bottom of the circular hole inner cavity.

[0010] Preferably, a plurality of evenly distributed slots are provided on one side of the two clamping plates close to the turntable.

[0011] A lubrication-free sprocket surface treatment process uses the above-mentioned surface treatment device, and the specific steps are as follows:

[0012] Step 1: First, add antioxidant into the spray tank and place the sprocket to be processed on top of the turntable;

[0013] Step 2: Then rotate the handwheel, which drives the first threaded rod and the second threaded rod to rotate. When the first threaded rod and the second threaded rod rotate, the two clamping plates are driven to move toward the sprocket through the movable block. At the same time, the sprocket is slightly rotated by the turntable so that the gear teeth on the outside of the sprocket are engaged with the inner cavity of the slot, thereby fixing the sprocket to prevent the sprocket from being displaced when the sprocket surface is processed.

[0014] Step 3: Then start the electric telescopic rod through the external power supply, and the electric telescopic rod drives the box to move downward, so that the wire brush at the bottom of the suction cup contacts the surface of the sprocket;

[0015] Step 4: Then start the motor through the external power supply, the motor drives the rotating shaft to rotate, and when the rotating shaft rotates, it drives several fan blades and suction cups to rotate. When the suction cup rotates, the impurities on the surface of the sprocket are brushed by the wire brush at the bottom to remove the oxides and other impurities on the surface of the sprocket. At the same time, the fan blades rotate to drive the air flow

[0016] Step 5: Then suck the impurities into the air duct through the suction hole at the bottom of the suction cup and transport them to the collection box;

[0017] Step 6: Finally, start the water pump through an external power supply. The water pump transports the antioxidant in the spray box to the nozzle and sprays it on the sprocket surface through the nozzle to isolate the sprocket surface from the outside world and prevent the sprocket surface from being oxidized again. After the treatment operation is completed, open the movable door and clean up the impurities in the collection box.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The motor drives the fan blades to rotate, which drives the air flow, thereby sucking the impurities and debris into the air duct through the suction hole at the bottom of the suction cup, and transporting them to the collection box through the air duct, preventing the debris from splashing and causing harm to people around, thereby greatly reducing the danger of the device during operation;

[0020] 2. Use a water pump to transport the antioxidant in the spray box to the nozzle, and spray the sprocket surface through the nozzle. The antioxidant isolates the sprocket surface from the air, thereby preventing the sprocket surface from being oxidized again, which is beneficial to subsequent processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a left-side structural diagram of the present invention;

[0023] Figure 3 This is a top view of the operating table of the present invention;

[0024] Figure 4 for Figure 1 Enlarged view of point A in the middle;

[0025] Figure 5 for Figure 2 Enlarged view of point B in the middle.

[0026] Numbers in the figure: 1. Base; 2. Operating table; 3. Support rod; 4. Electric telescopic rod; 5. L-shaped plate; 6. Support plate; 7. Feed pipe; 8. Spray head; 9. Box body; 10. Motor; 11. Collection box; 12. Movable door; 13. Air duct; 14. Suction cup; 15. Hand wheel; 16. Movable block; 17. Second threaded rod; 18. Water pump; 19. Feed pipe; 20. Spray tank; 21. Rotating shaft; 22. Fan blades; 23. Clamp; 24. First threaded rod; 25. Slider; 26. Turntable; 27. Spring; 28. Vertical rod; 29. ​​Fixed plate. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figure 1-5The present invention provides a technical solution: a surface treatment device for lubrication-free sprocket processing, comprising a base 1, two support rods 3 are fixedly connected to the bottom of the base 1 near the left and right sides, the two support rods 3 are arranged front and back, an L-shaped plate 5 is fixedly connected to the top of the base 1, an electric telescopic rod 4 is fixedly connected to the bottom of the L-shaped plate 5, the bottom of the electric telescopic rod 4 is fixedly connected to a box 9, a support plate 6 is provided in the inner cavity of the box 9, the left and right sides of the support plate 6 are fixedly connected to the inner cavity of the box 9, a motor 10 is fixedly connected to the top of the support plate 6, a rotating shaft 21 is fixedly connected to the power output end of the bottom of the motor 10, an air duct 13 is provided below the support plate 6, the bottom end of the air duct 13 passes through the bottom of the box 9 and extends to the bottom of the box 9, the right side of the air duct 13 passes through the right side of the box 9, and the top of the air duct 13 A first opening is provided, and the inner cavity of the opening is fixedly connected to a first bearing. The bottom end of the rotating shaft 21 passes through the inner cavity of the first bearing and is inserted into the inner cavity of the air duct 13. A plurality of fan blades 22 are fixedly connected to the outside of the rotating shaft 21. The plurality of fan blades 22 are arranged in three layers from top to bottom. Each layer of fan blades 22 is distributed in an array shape around the rotating shaft 21 to increase wind force. A suction cup 14 is provided below the air duct 13. A second opening is provided on the top of the suction cup 14. The inner cavity of the second opening is fixedly connected to a second bearing. The bottom end of the air duct 13 is inserted into the inner cavity of the second bearing. The bottom end of the rotating shaft 21 extends to the inner cavity of the suction cup 14 and is fixedly connected to the bottom of the inner cavity of the suction cup 14. A plurality of evenly distributed suction holes are provided at the bottom of the suction cup 14. A wire brush is fixedly connected to the bottom of the suction cup 14. The right side of the box body 9 is fixedly connected to a collector The collecting box 11 has several air outlets on the top of the collecting box 11, and a discharge port is provided on the right side of the collecting box 11. A movable door 12 is movably connected to the discharge port on the right side of the collecting box 11 through a hinge. A handle is fixedly connected to the right side of the movable door 12 near the bottom. The right end of the air duct 13 passes through the left side of the collecting box 11 and extends to the inner cavity of the collecting box 11. An operating table 2 is provided below the suction cup 14. The operating table 2 is fixedly connected to the top of the base 1. A slot is provided on the top of the operating table 2. A first threaded rod 24 and a second threaded rod 17 are provided near the front and rear sides of the slotted inner cavity. The first threaded rod 24 and the second threaded rod 17 are arranged on the left and right. The first threaded rod 24 is fixedly connected to the second threaded rod 17 through a connecting rod. The left end of the first threaded rod 24 is connected to the left end of the slotted inner cavity through a fourth bearing. The side is movably connected, and a third opening is provided on the right side of the operating table 2. The inner cavity of the third opening is fixedly connected to the third bearing. The right end of the second threaded rod 17 passes through the third bearing and is fixedly connected to the handwheel 15. The left end of the first threaded rod 24 and the right end of the second threaded rod 17 on the front and rear sides are provided with movable blocks 16. Sliding holes are provided on the four movable blocks 16. The left ends of the two first threaded rods 24 and the right ends of the two second threaded rods 17 respectively pass through adjacent sliding holes. The threads on the first threaded rod 24 and the second threaded rod 17 are opposite. The sliding hole inner cavities of the movable blocks 16 located on the first threaded rod 24 and the second threaded rod 17 are respectively provided with threads matching the first threaded rod 24 and the second threaded rod 17. A splint 23 is provided between the adjacent movable blocks 16 on the left and right sides.The front and rear sides of the splint 23 are respectively fixedly connected to the adjacent movable blocks 16. A number of evenly distributed slots are provided on the side of the two splints 23 close to the turntable 26. Slide grooves are provided on the front and rear sides of the slotted inner cavity. The four movable blocks 16 are fixedly connected to the side close to the slide groove. The side of the slider 25 close to the slide groove is inserted into the slide groove inner cavity. A turntable 26 is provided in the slotted inner cavity. The turntable 26 is located between the two splints 23. A circular hole is provided at the bottom of the slotted inner cavity. A vertical rod 28 is fixedly connected to the bottom of the turntable 26. The bottom end of the vertical rod 28 is inserted into the circular hole inner cavity and fixedly connected to a fixed plate 29. The bottom of the fixed plate 29 is fixedly connected to a spring 27. The bottom of the spring 27 is fixedly connected to the bottom of the circular hole inner cavity. It is used to support the sprocket and facilitate processing. The top of the base 1 is fixedly connected to the spray box 20. The spray box 20 is located on the rear side of the L-shaped plate 5. A feed pipe 19 is provided near the bottom of the rear side of the spray box 20. The bottom end of the feed pipe 19 passes through the rear side of the spray box 20. The top of the spray box 20 is fixedly connected to the water pump 18. The bottom end of the water suction pipe on the rear side of the water pump 18 passes through the top of the spray box 20 and extends into the inner cavity of the spray box 20. The front end of the water outlet pipe on the front side of the water pump 18 passes through the L-shaped plate 5. The left side of the suction cup 14 is fixedly connected to the spray head 8 through a connecting block. The top of the spray head 8 is fixedly connected to the feed pipe 7. The end of the feed pipe 7 away from the spray head 8 is fixedly connected to the water outlet pipe. The feed pipe 7 is a hose to prevent the feed pipe 7 from being pulled when the spray head 8 moves.

[0029] The surface treatment process of the above-mentioned lubrication-free sprocket has the following specific steps:

[0030] Step 1: First, add antioxidant into the spray tank 20 and place the sprocket to be processed on top of the turntable 26;

[0031] Step 2: Then rotate the handwheel 15, which drives the first threaded rod 24 and the second threaded rod 17 to rotate. When the first threaded rod 24 and the second threaded rod 17 rotate, the two clamping plates 23 are driven to move toward the sprocket through the movable block 16. At the same time, the sprocket is slightly rotated through the turntable 26, so that the gear teeth on the outside of the sprocket are engaged with the inner cavity of the slot, thereby fixing the sprocket to prevent the sprocket from displacement when the sprocket surface is processed;

[0032] Step 3: Then start the electric telescopic rod 4 through the external power supply, and the electric telescopic rod 4 drives the box 9 to move downward, so that the wire brush at the bottom of the suction cup 14 contacts the surface of the sprocket;

[0033] Step 4: Then start the motor 10 through the external power supply. The motor 10 drives the rotating shaft 21 to rotate. When the rotating shaft 21 rotates, it drives several fan blades 22 and the suction cup 14 to rotate. When the suction cup 14 rotates, the impurities on the surface of the sprocket are brushed by the wire brush at the bottom to remove the oxides and other impurities on the surface of the sprocket. At the same time, the fan blades 22 rotate to drive the air flow.

[0034] Step 5: The impurities are then sucked into the air duct 13 through the suction hole at the bottom of the suction cup 14 and transported to the collection box 11;

[0035] Step 6: Finally, start the water pump 18 through an external power supply. The water pump 18 transports the antioxidant in the spray box 20 to the nozzle 8, and sprays it on the sprocket surface through the nozzle 8 to isolate the sprocket surface from the outside world and prevent the sprocket surface from being oxidized again. After the treatment operation is completed, open the movable door 12 and clean out the impurities in the collection box 11.

[0036] Working principle: When using the device, add antioxidant into the spray box 20, place the sprocket to be processed on the top of the turntable 26, turn the handwheel 15, and the handwheel 15 drives the first threaded rod 24 and the second threaded rod 17 to rotate. When the first threaded rod 24 and the second threaded rod 17 rotate, the two clamping plates 23 are driven to move toward the sprocket through the movable block 16. At the same time, the sprocket is slightly rotated through the turntable 26 so that the gear teeth on the outside of the sprocket are engaged with the inner cavity of the card slot, thereby fixing the sprocket to prevent the sprocket from displacement when the sprocket surface is processed. The electric telescopic rod 4 is started by an external power supply, and the electric telescopic rod 4 drives the box body 9 to move downward, so that the wire brush at the bottom of the suction cup 14 contacts the surface of the sprocket, and the motor 10 is started by an external power supply. The motor 10 drives the rotating shaft 21 to rotate. When the rotating shaft 21 rotates, it drives several fan blades 22 and the suction cup 14 to rotate. When the suction cup 14 rotates, the impurities on the surface of the sprocket are brushed by the wire brush at the bottom to remove the oxides and other impurities on the surface of the sprocket. At the same time, the rotation of the fan blades 22 drives the air flow, and the impurities are sucked into the air duct 13 through the suction hole at the bottom of the suction cup 14, and transported to the collection box 11. At the same time, the water pump 18 is started by an external power supply. The water pump 18 transports the antioxidant in the spray box 20 to the nozzle 8, and sprays it on the surface of the sprocket through the nozzle 8, so that the surface of the sprocket is isolated from the outside world to prevent the surface of the sprocket from being oxidized again. After the processing operation is completed, the movable door 12 is opened to clean up the impurities in the collection box 11.

[0037] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A surface treatment device for lubrication-free sprocket processing, comprising a base (1), characterized in that: Two support rods (3) are fixedly connected to the bottom of the base (1) near the left and right sides, and the two support rods (3) are arranged front and back. An L-shaped plate (5) is fixedly connected to the top of the base (1), and an electric telescopic rod (4) is fixedly connected to the bottom of the L-shaped plate (5). The bottom end of the electric telescopic rod (4) is fixedly connected to a box (9). A support plate (6) is provided in the inner cavity of the box (9). The left and right sides of the support plate (6) are fixedly connected to the inner cavity of the box (9). A motor (10) is fixedly connected to the top of the support plate (6), and a rotating shaft (21) is fixedly connected to the power output end of the bottom of the motor (10). An air duct (13) is provided below the support plate (6), and the bottom end of the air duct (13) passes through the bottom of the box (9) and extends The air duct (13) extends to the bottom of the box body (9); the right side of the air duct (13) passes through the right side of the box body (9); the top of the air duct (13) is provided with a first opening, the inner cavity of the first opening is fixedly connected to a first bearing, the bottom end of the rotating shaft (21) passes through the inner cavity of the first bearing and is inserted into the inner cavity of the air duct (13); the outer side of the rotating shaft (21) is fixedly connected to a plurality of fan blades (22); a suction cup (14) is provided below the air duct (13); the top of the suction cup (14) is provided with a second opening, the inner cavity of the second opening is fixedly connected to a second bearing, the bottom end of the air duct (13) is inserted into the inner cavity of the second bearing, the bottom end of the rotating shaft (21) extends to the inner cavity of the suction cup (14) and is fixedly connected to the bottom of the inner cavity of the suction cup (14); the bottom of the suction cup (14) A plurality of evenly distributed suction holes are provided, a wire brush is fixedly connected to the bottom of the suction cup (14), a collection box (11) is fixedly connected to the right side of the box body (9), a plurality of air outlets are provided on the top of the collection box (11), a discharge port is provided on the right side of the collection box (11), a movable door (12) is movably connected to the discharge port on the right side of the collection box (11) through a hinge, a handle is fixedly connected to the right side of the movable door (12) near the bottom, the right end of the air duct (13) passes through the left side of the collection box (11) and extends to the inner cavity of the collection box (11), an operating table (2) is provided below the suction cup (14), the operating table (2) is fixedly connected to the top of the base (1), a slot is provided on the top of the operating table (2), and the inner cavity of the slot A first threaded rod (24) and a second threaded rod (17) are provided near the front and rear sides. The first threaded rod (24) and the second threaded rod (17) are arranged on the left and right sides. The first threaded rod (24) is fixedly connected to the second threaded rod (17) through a connecting rod. The left end of the first threaded rod (24) is movably connected to the left side of the slotted inner cavity through a fourth bearing. A third opening is provided on the right side of the operating table (2). A third bearing is fixedly connected to the inner cavity of the third opening. The right end of the second threaded rod (17) passes through the third bearing and is fixedly connected to a hand wheel (15). The left end of the first threaded rod (24) and the right end of the second threaded rod (17) on the front and rear sides are provided with movable blocks (16). The four movable blocks (16) are provided with sliding holes.The left ends of the two first threaded rods (24) and the right ends of the two second threaded rods (17) respectively penetrate adjacent sliding holes, and a clamping plate (23) is provided between the adjacent movable blocks (16) on the left and right sides. The front and rear sides of the clamping plate (23) are respectively fixedly connected to the adjacent movable blocks (16). A spray box (20) is fixedly connected to the top of the base (1), and the spray box (20) is located on the rear side of the L-shaped plate (5). A feed pipe (19) is provided on the rear side of the spray box (20) near the bottom. The feed pipe (19) The bottom end passes through the rear side of the spray box (20); the top of the spray box (20) is fixedly connected to a water pump (18); the bottom end of the water suction pipe on the rear side of the water pump (18) passes through the top of the spray box (20) and extends to the inner cavity of the spray box (20); the front end of the water outlet pipe on the front side of the water pump (18) passes through the L-shaped plate (5); the left side of the suction cup (14) is fixedly connected to a nozzle (8) through a connecting block; the top of the nozzle (8) is fixedly connected to a feed pipe (7); and the end of the feed pipe (7) away from the nozzle (8) is fixedly connected to the water outlet pipe; The slotted inner cavity is provided with a slide groove on both the front and rear sides, and the four movable blocks (16) are fixedly connected to a slider (25) on one side close to the slide groove, and the slider (25) is inserted into the inner cavity of the slide groove on one side close to the slide groove; The slotted inner cavity is provided with a rotating disk (26), the rotating disk (26) is located between the two clamping plates (23), the bottom of the slotted inner cavity is provided with a circular hole, the bottom of the rotating disk (26) is fixedly connected to a vertical rod (28), the bottom end of the vertical rod (28) is inserted into the inner cavity of the circular hole and is fixedly connected to a fixing plate (29), the bottom of the fixing plate (29) is fixedly connected to a spring (27), and the bottom of the spring (27) is fixedly connected to the bottom of the inner cavity of the circular hole.

2. The surface treatment device for lubrication-free sprocket processing according to claim 1, characterized in that: The plurality of fan blades (22) are arranged in three layers from top to bottom, and the fan blades (22) in each layer are distributed in an array around the rotating shaft (21).

3. The surface treatment device for lubrication-free sprocket processing according to claim 1, characterized in that: The material delivery pipe (7) is a hose.

4. The surface treatment device for lubrication-free sprocket processing according to claim 1, characterized in that: The threads on the first threaded rod (24) and the second threaded rod (17) are opposite to each other, and the inner cavities of the sliding holes of the movable blocks (16) respectively located on the first threaded rod (24) and the second threaded rod (17) are respectively provided with threads matching the first threaded rod (24) and the second threaded rod (17).

5. The surface treatment device for lubrication-free sprocket processing according to claim 1, characterized in that: A plurality of evenly distributed slots are provided on one side of the two clamping plates (23) close to the rotating disk (26).

6. A process for surface treatment of a lubrication-free sprocket, using the surface treatment device for lubrication-free sprocket processing as claimed in any one of claims 1 to 5, characterized in that: The specific steps are as follows: Step 1: first, add an antioxidant into the spray tank (20), and place the sprocket to be processed on top of the turntable (26); Step 2: Then, the hand wheel (15) is rotated, and the hand wheel (15) drives the first threaded rod (24) and the second threaded rod (17) to rotate. When the first threaded rod (24) and the second threaded rod (17) rotate, the two clamping plates (23) are driven to move toward the sprocket through the movable block (16). At the same time, the sprocket is slightly rotated through the rotating disk (26), so that the gear teeth on the outer side of the sprocket are engaged with the inner cavity of the slot, thereby fixing the sprocket to prevent the sprocket from being displaced when the surface of the sprocket is processed; Step 3: Then, the electric telescopic rod (4) is started by an external power supply, and the electric telescopic rod (4) drives the box (9) to move downward, so that the wire brush at the bottom of the suction cup (14) contacts the surface of the sprocket; Step 4: Then, the motor (10) is started by an external power supply, and the motor (10) drives the rotating shaft (21) to rotate. When the rotating shaft (21) rotates, it drives a plurality of fan blades (22) and the suction cup (14) to rotate. When the suction cup (14) rotates, the impurities on the surface of the sprocket are brushed by the wire brush at the bottom to remove the impurities on the surface of the sprocket. At the same time, the fan blades (22) rotate to drive air flow; Step 5: The impurities are then sucked into the air duct (13) through the suction hole at the bottom of the suction cup (14) and transported to the collection box (11); Step 6: Finally, the water pump (18) is started by an external power supply, and the water pump (18) transports the antioxidant in the spray box (20) to the nozzle (8), and sprays the antioxidant on the surface of the sprocket through the nozzle (8), so that the surface of the sprocket is isolated from the outside world and prevents the surface of the sprocket from being oxidized again. After the treatment operation is completed, the movable door (12) is opened to clean up the impurities in the collection box (11).

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