阅读说明：本技术 一种精密螺丝表面涂喷装置及喷涂方法 (Precise screw surface spraying device and spraying method ) 是由 关培祥 于 2021-09-14 设计创作，主要内容包括：本发明公开了一种精密螺丝表面涂喷装置及喷涂方法,具体涉及螺丝加工技术领域,包括操作箱,所述操作箱的上表面与储料箱的下表面固定连接,所述储料箱的背面与连接泵的正面相连通。本发明通过设置连接板、螺旋孔、风机组件、第一驱动组件、第一齿轮、第二齿轮、第二驱动组件、夹持框、活塞夹持组件、第一活塞筒、第二活塞筒和接触板,螺丝挤压接触板,此时第一活塞筒中气体转移至第二活塞筒内并控制四个活塞夹持组件相互靠近移动,方便实现螺丝夹持定位的同时将其推动至夹持框的中间位置,保证螺丝的精准放置,本装置可降低喷涂过程中喷涂废料和灰尘的影响,同时保证螺丝放置精准,在一定程度上保证螺丝喷涂过程具有更好的效果。(The invention discloses a precise screw surface spraying device and a spraying method, and particularly relates to the technical field of screw machining. According to the screw spraying device, the connecting plate, the spiral hole, the fan assembly, the first driving assembly, the first gear, the second driving assembly, the clamping frame, the piston clamping assembly, the first piston cylinder, the second piston cylinder and the contact plate are arranged, the screw extrudes the contact plate, at the moment, gas in the first piston cylinder is transferred into the second piston cylinder and the four piston clamping assemblies are controlled to move close to each other, so that the screw is pushed to the middle position of the clamping frame while being clamped and positioned conveniently, accurate placement of the screw is guaranteed, the influence of spraying waste materials and dust in the spraying process can be reduced, the accurate placement of the screw is guaranteed, and the screw spraying process is guaranteed to have a better effect to a certain extent.)

1. The utility model provides a device is spouted in accurate screw surface coating, includes control box (1), its characterized in that: the upper surface of the operation box (1) is fixedly connected with the lower surface of the storage box (4), the back surface of the storage box (4) is communicated with the front surface of the connecting pump (5), the lower surface of the connecting pump (5) is fixedly connected with the upper surface of the operation box (1), the back surface of the connecting pump (5) is communicated with one end of the first connecting pipe (6), the other end of the first connecting pipe (6) is communicated with the top end of the connecting hose (7), the bottom end of the connecting hose (7) is communicated with the top end of the second connecting pipe (8), the bottom end of the second connecting pipe (8) is provided with the spray head (11), the upper surface of the operation box (1) is provided with the middle pipe (13), the bottom end of the middle pipe (13) is provided with the rotary joint (14), the lower surface of the rotary joint (14) is provided with the connecting cylinder (15), the lower surface of the connecting cylinder (15) is provided with the connecting cover (16), a connecting plate (17) is arranged on the lower surface of the connecting cover (16), and a spiral hole (21) is formed in the lower surface of the connecting plate (17);

the lower surface of the inner wall of the operation box (1) is fixedly connected with the lower surfaces of the two fixing plates (23), the opposite surfaces of the two fixing plates (23) are fixedly connected with the two ends of a screw rod (24) respectively, a connecting thread cylinder (25) is arranged on the outer surface of the screw rod (24) in a connecting thread manner, a first driving wheel (27) is arranged on the outer surface of the connecting thread cylinder (25), the first driving wheel (27) is in transmission connection with a second driving wheel (29) through a belt (28), a second driving assembly (30) is arranged on the front surface of the second driving wheel (29), the lower surface of the second driving assembly (30) is fixedly connected with the upper surface of a transverse plate (31), and the upper surface of the transverse plate (31) is overlapped with the lower surface of a moving plate (32);

the back of movable plate (32) is provided with second bearing (34), be provided with connecting axle (35) in second bearing (34), connecting axle (35) all is provided with centre gripping frame (36) with the opposite face of second drive assembly (30), first connecting hole (39) have been seted up in the front of centre gripping frame (36), centre gripping frame (36) inner wall is provided with first piston cylinder (45), the surface of first piston cylinder (45) is provided with four trachea (44), the other end and the second piston cylinder (43) of trachea (44) are linked together, second piston cylinder (43) set up at centre gripping frame (36) inner wall, second piston cylinder (43) inner wall is provided with piston centre gripping subassembly (42).

2. The precise screw surface coating device according to claim 1, wherein: the top of well pipe (13) is provided with fan subassembly (12), the lower surface of fan subassembly (12) and the upper surface fixed connection of control box (1), the surface of second connecting pipe (8) is provided with pipe box (9), the upper surface of pipe box (9) and the bottom fixed connection of first electronic hydraulic stem (10), the top of first electronic hydraulic stem (10) and the upper surface fixed connection of control box (1) inner wall.

3. The precise screw surface coating device according to claim 1, wherein: the outer surface joint of connecting cylinder (15) has first gear (18), first gear (18) and second gear (19) meshing, the upper surface of second gear (19) and the output shaft fixed connection of first drive assembly (20), the upper surface of first drive assembly (20) and the upper surface fixed connection of control box (1) inner wall.

4. The precise screw surface coating device according to claim 1, wherein: the lower surface joint of control box (1) inner wall has otter board (22), the right flank of control box (1) is provided with feeding gate (2) and discharge door (3), feeding gate (2) are located the front side of discharge door (3), the position of feeding gate (2) and discharge door (3) all corresponds with the position of diaphragm (31).

5. The precise screw surface coating device according to claim 1, wherein: the front surface of the moving plate (32) is fixedly connected with one ends of the back surfaces of the two second electric hydraulic rods (33), and the lower surfaces of the second electric hydraulic rods (33) are fixedly connected with the upper surface of the transverse plate (31).

6. The precise screw surface coating device according to claim 1, wherein: the lower surface of diaphragm (31) and the last fixed surface of four uide bushing (37) are connected, two on the right side the surface sliding connection of uide bushing (37) inner wall and same guide bar (38), the both ends of guide bar (38) respectively with the opposite face fixed connection of two fixed plates (23), the right flank of first piston cylinder (45) is provided with violently pipe (49), violently pipe (49) joint is at the right flank of centre gripping frame (36), the right-hand member of violently pipe (49) is provided with control valve (50).

7. The precise screw surface coating device according to claim 1, wherein: the surface of connecting thread section of thick bamboo (25) is provided with first bearing (26), the upper surface of first bearing (26) and the lower fixed surface of diaphragm (31) are connected, the outer surface overlap joint of first piston section of thick bamboo (45) inner wall and piston plate (46), the front of piston plate (46) and the one end fixed connection at the carriage release lever (48) back, the positive one end of carriage release lever (48) and the back fixed connection of contact plate (40), contact plate (40) are located first connecting hole (39) inner wall.

8. The precise screw surface coating device according to claim 7, wherein: the back of piston board (46) is provided with elastic component (47), the other end and the first piston section of thick bamboo (45) inner wall fixed connection of elastic component (47), two four second connecting holes (41) have all been seted up to the opposite face of centre gripping frame (36), piston centre gripping subassembly (42) set up at second connecting hole (41) inner wall.

9. A spraying method of a precise screw surface spraying device is characterized by comprising the following steps:

s1, directly placing the screw between the two contact plates (40), controlling the second electro-hydraulic rod (33) to drive the moving plate (32) to move backwards, when the two contact plates (40) are squeezed by the two ends of the screw, driving the piston plate (46) to move by the contact plates (40), simultaneously squeezing the gas in the first piston cylinder (45) by the piston plate (46) to transfer into the second piston cylinder (43), simultaneously increasing the gas pressure in the second piston cylinder (43), enabling the four piston clamping assemblies (42) to move close to each other, and clamping and pushing the screw to the middle position of the clamping frame (36) by the four piston clamping assemblies (42);

s2, after the clamping frame (36) is contacted with the screw, the second electro-hydraulic rod (33) is controlled to stop working, at the moment, the first driving component (20), the second driving component (30), the connecting pump (5) and the fan component (12) are controlled to work, the connecting cylinder (15) and the connecting plate (17) are driven to rotate by the first gear (18) and the second gear (19) when the first driving component (20) works, meanwhile, the fan assembly (12) drives airflow to downwards enter the operation box (1) through the connecting cylinder (15), the airflow passes through the spiral holes (21) on the surface of the rotating connecting plate (17) and moves downwards to enable the airflow to continuously and spirally move downwards, dust and dust are drawn out of the position right below the connecting plate (17) due to centrifugal force in the middle of the spiral airflow, and the second driving assembly (30) controls the second driving wheel (29) and the clamping frame (36) to rotate while working;

s3, the clamping frame (36) drives the screw to rotate at the moment, the second driving wheel (29) drives the first driving wheel (27) and the connecting thread cylinder (25) to rotate through the belt (28), the first bearing (26) and the transverse plate (31) are driven to move backwards through the thread action between the connecting thread cylinder (25) and the screw rod (24), meanwhile, the connecting pump (5) sprays the raw materials in the material storage box (4) downwards through the spray head (11) to fall on the screw, after the spraying of the screw is finished, the connecting pump (5) is controlled at the moment, the first driving assembly (20), the second driving assembly (30) and the fan assembly (12) stop working, meanwhile, the second electric hydraulic rod (33) is controlled to drive the movable plate (32) to move forwards, and after the clamping frame (36) is separated from the screw, the screw is taken down.

Technical Field

The invention relates to the technical field of screw machining, in particular to a precise screw surface coating device and a precise screw surface coating method.

Background

The screw is a tool for fastening the parts of the object step by utilizing the physics and mathematical principles of the inclined circular rotation and friction of the object. Screws are a common term for fasteners, a common spoken word. The screw is indispensable industry requisite in daily life: extremely small screws used for cameras, glasses, clocks, electronics, and the like; general screws for televisions, electric appliances, musical instruments, furniture, and the like; large screws and nuts are used for engineering, buildings and bridges; transportation equipment, airplanes, electric cars, automobiles, and the like are used with screws of different sizes.

The screw need be to its surface spraying protective coating in order to strengthen its performance or guarantee life in carrying out the course of working, current screw spraying device has spraying waste material and dust of previous time in probably the air to the screw spraying in-process, lead to spraying the layer to thoughtlessly have certain spraying waste material and dust, influence the adhesive strength between spraying layer and the screw and the performance of spraying layer self, screw centre gripping locating process is difficult to guarantee that the screw is in central point simultaneously, lead to the deviation to appear easily among the follow-up spraying process, lead to the effect of spiral shell spraying not ideal enough, consequently, need a precision screw surface spraying device and spraying method to solve above-mentioned problem.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides a precise screw surface coating device and a coating method, and the technical problems to be solved by the invention are as follows: screw spraying device has spraying waste material and dust once before in probably the air to screw spraying in-process, leads to spraying the layer to thoughtlessly have certain spraying waste material and dust, influences the adhesive strength between spraying layer and the screw and the performance of spraying layer self, and screw centre gripping positioning process is difficult to guarantee simultaneously that the screw is in central point and puts, leads to the deviation to appear easily among the follow-up spraying process, leads to the not ideal problem of effect of spiral shell spraying.

In order to achieve the purpose, the invention provides the following technical scheme: a precise screw surface coating device comprises an operation box, wherein the upper surface of the operation box is fixedly connected with the lower surface of a material storage box, the back surface of the material storage box is communicated with the front surface of the connecting pump, the lower surface of the connecting pump is fixedly connected with the upper surface of the operation box, the back of the connecting pump is communicated with one end of a first connecting pipe, the other end of the first connecting pipe is communicated with the top end of a connecting hose, the bottom end of the connecting hose is communicated with the top end of a second connecting pipe, the bottom end of the second connecting pipe is provided with a spray head, the upper surface of the operation box is provided with a middle pipe, the bottom end of the middle pipe is provided with a rotary joint, the lower surface of the rotary joint is provided with a connecting cylinder, the lower surface of the connecting cylinder is provided with a connecting cover, the lower surface of the connecting cover is provided with a connecting plate, and the lower surface of the connecting plate is provided with a spiral hole.

The lower surface of control box inner wall and the lower fixed surface of two fixed plates are connected, two the opposite face of fixed plate respectively with the both ends fixed connection of lead screw, the surface connecting thread of lead screw has a connecting thread section of thick bamboo, the surface of a connecting thread section of thick bamboo is provided with first drive wheel, first drive wheel passes through the belt and is connected with the secondary drive wheel transmission, the front of secondary drive wheel is provided with second drive assembly, the lower surface of second drive assembly and the upper surface fixed connection of diaphragm, the upper surface of diaphragm and the lower surface overlap joint of movable plate.

The back of movable plate is provided with the second bearing, be provided with the connecting axle in the second bearing, the connecting axle all is provided with the centre gripping frame with second drive assembly's opposite face, first connecting hole has been seted up in the front of centre gripping frame, centre gripping frame inner wall is provided with a piston cylinder, the surface of a piston cylinder is provided with four trachea, tracheal other end is linked together with a piston cylinder, a piston cylinder sets up at centre gripping frame inner wall, a piston cylinder inner wall is provided with piston centre gripping subassembly.

As a further scheme of the invention: the top end of the middle pipe is provided with a fan assembly, the lower surface of the fan assembly is fixedly connected with the upper surface of the operation box, the outer surface of the second connecting pipe is provided with a pipe sleeve, the upper surface of the pipe sleeve is fixedly connected with the bottom end of the first electric hydraulic rod, and the top end of the first electric hydraulic rod is fixedly connected with the upper surface of the inner wall of the operation box.

As a further scheme of the invention: the outer surface joint of connecting cylinder has first gear, first gear and second gear meshing, the upper surface of second gear and the output shaft fixed connection of first drive assembly, the upper surface of first drive assembly and the upper surface fixed connection of control box inner wall.

As a further scheme of the invention: the lower surface joint of control box inner wall has the otter board, the right flank of control box is provided with feeding door and discharge door, the feeding door is located the front side of discharge door, the position of feeding door and discharge door all corresponds with the position of diaphragm.

As a further scheme of the invention: the front surface of the moving plate is fixedly connected with one ends of the back surfaces of the two second electric hydraulic rods, and the lower surfaces of the second electric hydraulic rods are fixedly connected with the upper surface of the transverse plate.

As a further scheme of the invention: the lower surface of diaphragm and the last fixed surface of four uide bushings are connected, and the right side is two the surface sliding connection of uide bushing inner wall and same guide bar, the both ends of guide bar respectively with the opposite face fixed connection of two fixed plates, the right flank of first piston cylinder is provided with violently the pipe, violently the pipe joint is at the right flank of centre gripping frame, the right-hand member of violently managing is provided with the control valve.

As a further scheme of the invention: the surface of a connecting thread section of thick bamboo is provided with first bearing, the upper surface of first bearing and the lower fixed surface of diaphragm are connected, the outer surface overlap joint of first piston section of thick bamboo inner wall and piston plate, the front of piston plate and the one end fixed connection at the carriage release lever back, the positive one end of carriage release lever and the back fixed connection of contact plate, the contact plate is located first connecting hole inner wall.

As a further scheme of the invention: the back of piston board is provided with elastic component, elastic component's the other end and first piston section of thick bamboo inner wall fixed connection, two four second connecting holes have all been seted up to the opposite face of centre gripping frame, piston centre gripping subassembly sets up at second connecting hole inner wall.

A spraying method of a precise screw surface spraying device comprises the following steps:

s1, directly placing the screw between the two contact plates, controlling the second electric hydraulic rod to drive the moving plate to move backwards, when the two contact plates are extruded by the two ends of the screw, driving the piston plate to move by the contact plates, simultaneously extruding the gas in the first piston cylinder to be transferred into the second piston cylinder by the piston plate, simultaneously increasing the gas pressure in the second piston cylinder, enabling the four piston clamping assemblies to move close to each other, and clamping and pushing the screw to the middle position of the clamping frame by the four piston clamping assemblies;

s2, after the clamping frame is contacted with the screw, the second electric hydraulic rod is controlled to stop working, the first driving assembly, the second driving assembly, the connecting pump and the fan assembly are controlled to work at the moment, the first driving assembly drives the connecting cylinder and the connecting plate to rotate through the first gear and the second gear when working, meanwhile, the fan assembly drives airflow to downwards enter the operation box through the connecting cylinder, the airflow passes through the spiral hole on the surface of the rotating connecting plate to downwards move, the airflow is in a continuous spiral shape to downwards move, dust and dust are sucked out of the position right below the connecting plate due to centrifugal force in the spiral airflow, and the second driving assembly is controlled to rotate with the clamping frame when working;

s3, the screw is driven to rotate by the clamping frame at the moment, the first driving wheel and the connecting thread cylinder are driven to rotate by the second driving wheel through a belt, the first bearing and the transverse plate are driven to move backwards through the thread action between the connecting thread cylinder and the screw rod at the moment, raw materials in the storage box are sprayed downwards through the spray head by the connecting pump and fall on the surface of the screw, after the screw is sprayed, the connecting pump is controlled at the moment, the first driving assembly, the second driving assembly and the fan assembly stop working, the second electric hydraulic rod is controlled to drive the movable plate to move forwards, and after the clamping frame is separated from the screw, the screw is taken down.

The invention has the beneficial effects that:

1. the invention is provided with a connecting plate, a spiral hole, a fan component, a first driving component, a first gear, a second driving component, a clamping frame, a piston clamping component, a first piston cylinder, a second piston cylinder and a contact plate, wherein the first driving component controls the connecting cylinder and the connecting plate to rotate through the first gear and the second gear, air flowing downwards through the spiral hole is spiral, the spiral airflow is internally and centrifugally extracted to outwards extract spraying waste materials and dust right below a spray head, when a screw is placed between the two clamping frames, the clamping frame clamps and positions the screw and simultaneously extrudes the contact plate through the screw, at the moment, gas in the first piston cylinder is transferred into the second piston cylinder and controls the four piston clamping components to move close to each other, the screw is conveniently clamped and positioned and simultaneously pushed to the middle position of the clamping frame, the accurate placement of the screw is ensured, and the device can reduce the influence of the spraying waste materials and dust in the spraying process, meanwhile, the screws are accurately placed, and the screw spraying process is guaranteed to have a better effect to a certain extent;

2. according to the invention, the second driving assembly, the screw rod, the connecting thread cylinder, the clamping frame, the first driving wheel, the belt and the second driving wheel are arranged, the clamping frame and the second driving wheel are controlled to rotate while the second driving assembly works, the clamping frame drives the screw to rotate at the moment, the second driving wheel controls the first driving wheel and the connecting thread cylinder to rotate through the belt, the transverse plate and the screw are controlled to move forwards under the action of the thread between the connecting thread cylinder and the screw rod, the spraying process is conveniently carried out while the screw is controlled to rotate to move, and the smooth and accurate operation of the spraying process is ensured;

3. according to the invention, the screen plate is arranged, so that the lower part of the operation box is communicated with the outside, air blown into the operation box by the fan can smoothly flow out through the screen plate, the rapid flow of the ambient air in the screw spraying process is ensured, the drying speed of the sprayed coating is accelerated, the screw is kept rotating in the spraying process, the condition that the spraying raw material is downward condensed and dripped on the surface of the screw is avoided, and the spraying effect and the spraying efficiency are relatively ideal to a certain extent.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a perspective view of a first connecting tube according to the present invention;

FIG. 4 is a perspective structural view of the connecting plate of the present invention;

FIG. 5 is a perspective view of a fixing plate according to the present invention;

FIG. 6 is a perspective view of a second driving assembly according to the present invention;

FIG. 7 is a schematic three-dimensional structure of a clamping frame according to the present invention;

FIG. 8 is a schematic perspective view of a contact plate according to the present invention;

FIG. 9 is a schematic perspective sectional view of a first piston cylinder according to the present invention;

in the figure: 1. an operation box; 2. a feed gate; 3. a discharge door; 4. a material storage box; 5. connecting a pump; 6. a first connecting pipe; 7. a connecting hose; 8. a second connecting pipe; 9. pipe sleeve; 10. a first electro-hydraulic lever; 11. a spray head; 12. a fan assembly; 13. an intermediate pipe; 14. a rotary joint; 15. a connecting cylinder; 16. a connecting cover; 17. a connecting plate; 18. a first gear; 19. a second gear; 20. a first drive assembly; 21. a helical bore; 22. a screen plate; 23. a fixing plate; 24. a screw rod; 25. connecting the threaded cylinder; 26. a first bearing; 27. a first drive pulley; 28. a belt; 29. a second transmission wheel; 30. a second drive assembly; 31. a transverse plate; 32. moving the plate; 33. a second electro-hydraulic ram; 34. a second bearing; 35. a connecting shaft; 36. a clamping frame; 37. a guide sleeve; 38. a guide bar; 39. a first connection hole; 40. a contact plate; 41. a second connection hole; 42. a piston clamping assembly; 43. a second piston cylinder; 44. an air tube; 45. a first piston cylinder; 46. a piston plate; 47. an elastic component; 48. a travel bar; 49. a transverse tube; 50. and (4) controlling the valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-9, the present invention provides a precise screw surface spraying device, which comprises an operation box 1, wherein the upper surface of the operation box 1 is fixedly connected with the lower surface of a material storage box 4, the back surface of the material storage box 4 is communicated with the front surface of a connection pump 5, the lower surface of the connection pump 5 is fixedly connected with the upper surface of the operation box 1, the back surface of the connection pump 5 is communicated with one end of a first connection pipe 6, a plurality of spiral holes 21 are circumferentially arranged by arranging spiral holes 21, when an air flow passes through the spiral holes 21 and flows downwards, the air flow is spiral, the connection plate 17 and the spiral holes 21 rotate and simultaneously ensure that the air flow is in a continuous spiral shape, meanwhile, the middle position of the spiral air flow is influenced by centrifugal force, spraying waste and dust at the position right below a spray head 11 are pumped and cleaned, the other end of the first connection pipe 6 is communicated with the top end of a connection hose 7, the bottom end of the connection hose 7 is communicated with the top end of a second connection pipe 8, through setting up coupling hose 7, coupling hose 7 realizes the connection of first connecting pipe 6 and second connecting pipe 8, and when second connecting pipe 8 and shower nozzle 11 reciprocated, coupling hose 7 warp and keeps the intercommunication of first connecting pipe 6 and second connecting pipe 8, the bottom of second connecting pipe 8 is provided with shower nozzle 11, the upper surface of control box 1 is provided with well pipe 13, the bottom of well pipe 13 is provided with rotary joint 14, rotary joint 14's lower surface is provided with connecting cylinder 15, through setting up rotary joint 14, can carry out relative rotation when guaranteeing to keep keeping the intercommunication between well pipe 13 and the connecting cylinder 15, guarantee that connecting cylinder 15 and connecting plate 17 can rotate smoothly, the lower surface of connecting cylinder 15 is provided with connecting cover 16, the lower surface of connecting cover 16 is provided with connecting plate 17, spiral hole 21 has been seted up to the lower surface of connecting plate 17.

The lower surface of the inner wall of the operation box 1 is fixedly connected with the lower surfaces of the two fixing plates 23, the opposite surfaces of the two fixing plates 23 are respectively fixedly connected with two ends of a screw rod 24, a connecting thread cylinder 25 is arranged on the outer surface of the screw rod 24 through connecting threads, a first driving wheel 27 is arranged on the outer surface of the connecting thread cylinder 25, the power of a second driving assembly 30 is transmitted to the connecting thread cylinder 25 through arranging the first driving wheel 27, a belt 28 and a second driving wheel 29, the second driving assembly 30 can control the connecting thread cylinder 25 to rotate while a work control clamping frame 36 rotates, the first driving wheel 27 is in transmission connection with the second driving wheel 29 through the belt 28, a second driving assembly 30 is arranged on the front surface of the second driving wheel 29, the lower surface of the second driving assembly 30 is fixedly connected with the upper surface of a transverse plate 31, and the upper surface of the transverse plate 31 is lapped with the lower surface of the movable plate 32.

The back of the moving plate 32 is provided with a second bearing 34, the support and the limit of the front clamping frame 36 are realized by arranging the second bearing 34 and the connecting shaft 35, the stable placement of the clamping frame 36 can be ensured, meanwhile, the rotation of the clamping frame 36 is ensured, the connecting shaft 35 is arranged in the second bearing 34, the clamping frame 36 is arranged on the opposite surfaces of the connecting shaft 35 and the second driving assembly 30, the front surface of the clamping frame 36 is provided with a first connecting hole 39, the inner wall of the clamping frame 36 is provided with a first piston cylinder 45, the outer surface of the first piston cylinder 45 is provided with four air pipes 44, through arranging the first piston cylinder 45, the second piston cylinder 43, the piston clamping assembly 42, the piston plate 46 and the contact plate 40, when the contact plate 40 is pressed, the air in the first piston cylinder 45 can be extruded and transferred into the four second piston cylinders 43, the piston clamping assembly 42 in the second piston cylinder 43 moves close to each other, so that the screw is pushed to the middle position of the clamping frame 36, the other end of the air pipe 44 is communicated with the second piston cylinder 43, the second piston cylinder 43 is arranged on the inner wall of the clamping frame 36, and the piston clamping assembly 42 is arranged on the inner wall of the second piston cylinder 43.

As shown in fig. 1, 2 and 3, a fan assembly 12 is arranged at the top end of the middle pipe 13, the lower surface of the fan assembly 12 is fixedly connected with the upper surface of the operation box 1, the fan assembly 12 is arranged, when the fan assembly 12 works, external air can be sucked, filtered and conveyed into the operation box 1, a pipe sleeve 9 is arranged on the outer surface of the second connecting pipe 8, the upper surface of the pipe sleeve 9 is fixedly connected with the bottom end of the first electric hydraulic rod 10, the first electric hydraulic rod 10 and the pipe sleeve 9 are arranged, the second connecting pipe 8 and the spray head 11 can be controlled to move in the vertical direction when the first electric hydraulic rod 10 works, the height of the spray head 11 can be adjusted according to the spraying requirement of screws, and the top end of the first electric hydraulic rod 10 is fixedly connected with the upper surface of the inner wall of the operation box 1.

As shown in fig. 3, a first gear 18 is clamped on the outer surface of the connecting cylinder 15, the first gear 18 is meshed with a second gear 19, the first gear 18, the second gear 19 and a first driving component 20 are arranged, the first driving component 20 can control the connecting cylinder 15 and the connecting plate 17 to rotate through the first gear 18 and the second gear 19 when working, so as to control the rotation operation of the connecting plate 17, the upper surface of the second gear 19 is fixedly connected with the output shaft of the first driving component 20, and the upper surface of the first driving component 20 is fixedly connected with the upper surface of the inner wall of the operation box 1.

As shown in fig. 1 and 2, the lower surface joint of operation box 1 inner wall has otter board 22, and through setting up otter board 22, otter board 22 guarantees external and the inside intercommunication of operation box 1, and the smooth circulation of air current is guaranteed constantly to the inside fan subassembly 12 of operation box 1 ventilates, and the right flank of operation box 1 is provided with feed door 2 and discharge door 3, and feed door 2 is located the front side of discharge door 3, and the position of feed door 2 and discharge door 3 all corresponds with the position of diaphragm 31.

As shown in fig. 5, the front surface of the moving plate 32 is fixedly connected to one end of the back surfaces of the two second electro-hydraulic rods 33, the lower surface of the second electro-hydraulic rods 33 is fixedly connected to the upper surface of the horizontal plate 31, and by arranging the second electro-hydraulic rods 33, when the second electro-hydraulic rods 33 work, the front clamping frames 36 can be controlled to move back and forth, so that the clamping and limiting of the two clamping frames 36 on the whole screw can be conveniently realized.

As shown in fig. 5, 7 and 8, the lower surface of the horizontal plate 31 is fixedly connected with the upper surfaces of the four guide sleeves 37, the inner walls of the two right guide sleeves 37 are slidably connected with the outer surface of the same guide rod 38, by arranging the guide sleeve 37 and the guide rod 38, the guide sleeve 37 can play a certain supporting role in the moving process of the transverse plate 31 while moving on the surface of the guide rod 38, so as to ensure the smooth and stable moving process of the transverse plate 31, two ends of the guide rod 38 are respectively and fixedly connected with opposite surfaces of the two fixing plates 23, the right side surface of the first piston cylinder 45 is provided with a transverse pipe 49, through setting up violently pipe 49 and control valve 50, when control valve 50 opened, the partial gas in first piston cylinder 45 and the second piston cylinder 43 can flow smoothly, conveniently realizes the separation of piston centre gripping subassembly 42 and screw, violently pipe 49 joint in the right flank of centre gripping frame 36, and the right-hand member of violently pipe 49 is provided with control valve 50.

As shown in fig. 6, 8 and 9, the first bearing 26 is disposed on the outer surface of the connecting threaded cylinder 25, the upper surface of the first bearing 26 is fixedly connected to the lower surface of the horizontal plate 31, the first bearing 26 is disposed to realize connection between the connecting threaded cylinder 25 and the horizontal plate 31, the threaded cylinder 15 can smoothly and stably rotate when rotating, and smooth and stable movement of the horizontal plate 31 is realized, the inner wall of the first piston cylinder 45 overlaps the outer surface of the piston plate 46, the front surface of the piston plate 46 is fixedly connected to one end of the back surface of the moving rod 48, one end of the front surface of the moving rod 48 is fixedly connected to the back surface of the contact plate 40, and by disposing the piston plate 46 and the elastic component 47, gas flows out in the first piston cylinder 45, and after the screw is separated from the contact plate 40, the elastic component 47 can drive the contact plate 40 to automatically reset, and the contact plate 40 is located on the inner wall of the first connection hole 39.

As shown in fig. 7 and 9, an elastic component 47 is disposed on the back of the piston plate 46, the other end of the elastic component 47 is fixedly connected to the inner wall of the first piston cylinder 45, four second connection holes 41 are disposed on the opposite surfaces of the two clamping frames 36, by disposing the piston clamping components 42, when the four piston clamping components 42 move close to each other, the control screw can be smoothly pressed to move to the middle position of the clamping frame 36, and the piston clamping components 42 are disposed on the inner wall of the second connection holes 41.

A spraying method of a precise screw surface spraying device comprises the following steps:

s1, directly placing the screw between the two contact plates 40, and controlling the second electro-hydraulic rod 33 to drive the moving plate 32 to move backward, when the two ends of the screw press the two contact plates 40, the contact plates 40 drive the piston plate 46 to move, at the same time, the piston plate 46 presses the gas in the first piston cylinder 45 to transfer to the second piston cylinder 43, at the same time, the gas pressure in the second piston cylinder 43 increases, at this time, the four piston clamping assemblies 42 move close to each other, and the four piston clamping assemblies 42 clamp and push the screw to the middle position of the clamping frame 36;

s2, after the clamping frame 36 is contacted with the screw, the second hydraulic rod is controlled to stop working, at the moment, the first driving component 20, the second driving component 30, the connecting pump 5 and the fan component 12 are controlled to work, the first driving component 20 drives the connecting cylinder 15 and the connecting plate 17 to rotate through the first gear 18 and the second gear 19 when working, meanwhile, the fan component 12 drives the airflow to downwards enter the operation box 1 through the connecting cylinder 15, the airflow passes through the spiral hole 21 on the surface of the rotating connecting plate 17 to downwards move, the airflow is enabled to continuously and spirally downwards move, dust and dust are sucked out of the position right below the connecting plate 17 due to centrifugal force in the middle of the spiral airflow, and the second driving wheel 29 and the clamping frame 36 are controlled to rotate while the second driving component 30 works;

s3, at the moment, the clamping frame 36 drives the screw to rotate, the second driving wheel 29 drives the first driving wheel 27 and the connecting threaded cylinder 25 to rotate through the belt 28, at the moment, the first bearing 26 and the transverse plate 31 are driven to move backwards through the thread action between the connecting threaded cylinder 25 and the lead screw 24, meanwhile, the connecting pump 5 sprays the raw materials in the storage box 4 downwards through the spray head 11 to fall on the surface of the screw, after the screw is sprayed, the connecting pump 5, the first driving assembly 20, the second driving assembly 30 and the fan assembly 12 are controlled to stop working, meanwhile, the second electric hydraulic rod 33 is controlled to drive the moving plate 32 to move forwards, and after the clamping frame 36 is separated from the screw, the screw is taken down.

In summary, the following results can be obtained:

the invention is provided with a connecting plate 17, a spiral hole 21, a fan component 12, a first driving component 20, a first gear 18, a second gear 19, a second driving component 30, a clamping frame 36, a piston clamping component 42, a first piston cylinder 45, a second piston cylinder 43 and a contact plate 40, wherein the first driving component 20 controls the connecting cylinder 15 and the connecting plate 17 to rotate through the first gear 18 and the second gear 19, air flowing downwards through the spiral hole 21 is spiral, spraying waste materials and dust just below a spray head 11 are extracted outwards by centrifugal force in spiral airflow, when a screw is placed between the two clamping frames 36, the screw is clamped and positioned by the clamping frame 36, the contact plate 40 is extruded by the screw, at the same time, gas in the first piston cylinder 45 is transferred into the second piston cylinder 43 and four piston clamping components 42 are controlled to move close to each other, the screw is conveniently clamped and positioned and pushed to the middle position of the clamping frame 36, guarantee the accurate of screw and place, this device can reduce the influence of spraying waste material and dust among the spraying process, guarantees simultaneously that the screw is placed accurately, guarantees to a certain extent that screw spraying process has better effect.

According to the invention, the second driving assembly 30, the screw rod 24, the connecting threaded cylinder 25, the clamping frame 36, the first driving wheel 27, the belt 28 and the second driving wheel 29 are arranged, the clamping frame 36 and the second driving wheel 29 are controlled to rotate while the second driving assembly 30 works, at the moment, the clamping frame 36 drives the screw to rotate, the second driving wheel 29 controls the first driving wheel 27 and the connecting threaded cylinder 25 to rotate through the belt 28, the transverse plate 31 and the screw to move forwards under the action of the screw thread between the connecting threaded cylinder 25 and the screw rod 24, the rotating and moving of the screw are conveniently controlled, and the spraying process is conveniently carried out while the screw is controlled to rotate, so that the smooth and accurate spraying process is ensured.

According to the invention, the screen plate 22 is arranged, the screen plate 22 ensures that the lower part of the operation box 1 is communicated with the outside, air blown to the interior of the operation box 1 by the fan can smoothly flow out through the screen plate 22, the rapid flow of surrounding air in the screw spraying process is ensured, the drying speed of the sprayed coating is accelerated, the screw is kept rotating in the spraying process, the condition that spraying raw materials are downward condensed and dripped on the surface of the screw is avoided, and the spraying effect and the spraying efficiency are ensured to be ideal to a certain extent.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;

and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.