Paint spraying device applied to large unmanned aerial vehicle propeller manufacturing

Abstract

The utility model discloses a paint spraying device applied to large unmanned aerial vehicle propeller manufacturing, which comprises a paint spraying table, a paint spraying frame is arranged on the paint spraying table, a plurality of nozzles are arranged on the paint spraying frame, a cross rod is further arranged on the paint spraying frame, a movable rod is arranged in the cross rod, and one end of the movable rod is movably connected with the cross rod. A clamping piece used for clamping blades of the propeller is arranged at the other end of the movable rod, and a rotary driving piece is further arranged on the transverse rod and used for driving the movable rod to rotate around the axis of the movable rod; the paint spraying frame is further provided with a hanging piece capable of stretching out and drawing back in the vertical direction, and the hanging piece is used for being connected with an installation head of the propeller and hanging the propeller to the position below the spraying head. The propeller can be temporarily suspended through the suspension part, so that the blades of the propeller are subjected to paint spraying treatment, and after one surface of each blade is subjected to paint spraying treatment, the propeller can be driven to rotate through the arranged rotation driving part, so that the other surface of each blade of the propeller is subjected to paint spraying treatment; therefore, the paint spraying efficiency of the propeller is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicle manufacturing, and in particular to a paint spraying device used in the manufacturing of large-scale unmanned aerial vehicle propellers. Background Art

[0002] In the manufacturing process of drones, in order to prevent the propellers from rusting during use, they are painted. When painting the propellers of large drones, the traditional manufacturing process requires painting one side of the propeller blade first. After the paint on that side is dry, the propeller is turned over and the other side of the blade is painted. This undoubtedly reduces the processing efficiency of the propeller, and it is more laborious for workers to paint the propeller on the reverse side. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art, and the purpose is to provide a painting device for the manufacture of large-scale unmanned aerial vehicle propellers. The propeller can be temporarily suspended by a hanging part so that the propeller blades can be painted, and after one surface of the blade is painted, the propeller can be driven to rotate by a set rotating drive part so that the other side of the propeller blade can be painted, thereby improving the painting efficiency of the propeller.

[0004] The utility model is realized by the following technical solutions:

[0005] A painting device for manufacturing large-scale unmanned aerial vehicle propellers, comprising a painting platform, a painting frame provided on the painting platform, a plurality of spray heads provided on the painting frame, a cross bar provided on the painting frame, a movable rod provided inside the cross bar, one end of the movable rod being movably connected to the cross bar, and a clamping member for clamping a propeller blade provided on the other end, a rotating driving member provided on the cross bar, and the rotating driving member used to drive the movable rod to rotate around the axis of the movable rod;

[0006] The spray paint rack is also provided with a suspension member that can be extended and retracted in the vertical direction. The suspension member is used to be connected with the mounting head of the propeller and to suspend the propeller below the spray head.

[0007] Furthermore, the spray paint rack includes a vertical plate and a horizontal plate, the vertical plate is vertically connected to the top of the spray paint table, and the horizontal plate is fixed to the top of the vertical plate;

[0008] The spray head and the hanging member are located at the bottom of the horizontal plate, and the horizontal bar is fixed on the vertical plate.

[0009] Furthermore, a mounting blind hole is provided at the end of the cross bar facing the clamping member, a first telescopic member is provided in the mounting blind hole, the movable rod passes through the first telescopic member, and the first telescopic member is used to push the movable rod to move along the axial direction of the cross bar in the cross bar.

[0010] Furthermore, a movable plate is provided in the installation blind hole of the crossbar, and the movable plate is connected to the telescopic end of the first telescopic member;

[0011] The movable plate is provided with a first bearing matched with the movable rod. The movable rod penetrates the movable plate and then extends into the first telescopic member, and the first bearing is sleeved on the movable rod.

[0012] Furthermore, the rotary driving member includes a second telescopic member and a pull rope, the second telescopic member is fixed on the side wall of the cross bar, the telescopic end of the second telescopic member is connected to one end of the pull rope, the other end of the pull rope is wound around the movable rod, and the second telescopic member is used to pull the pull rope to move radially toward the cross bar.

[0013] Further, the clamping member comprises a clamping block and an air jet, the clamping block is connected to the movable rod, a clamping groove is provided on the clamping block, and the air jet is fixed on the clamping block;

[0014] A fixing plate is also provided in the installation blind hole of the cross bar, the fixing plate is fixed at the opening of the installation blind hole, a second bearing matching the movable rod is provided on the fixing plate, and the second bearing is sleeved on the movable rod;

[0015] An air bag component is also provided between the fixed plate and the movable plate, and the air bag component is connected to the air jet port through a hose.

[0016] Furthermore, the movable rod is provided with a connecting hole, the connecting hole is distributed along the axial direction of the movable rod and is connected with both ends of the movable rod, a guide rod having a diameter the same as the inner diameter of the connecting hole is provided in the connecting hole, and the guide rod extends into the clamping groove of the clamping block;

[0017] A connecting pipe is arranged inside the guide rod, and an air inlet is also arranged on the side wall of the guide rod. One end of the connecting pipe is communicated with the air inlet, and the other end is communicated with the second telescopic member.

[0018] Furthermore, the suspension member includes a vertical tube, a third telescopic member and a suspension rod, a cylinder is also provided on the top of the horizontal plate, an output end of the cylinder is connected to the vertical tube, one end of the third telescopic member is fixed in the vertical tube, and the other movable end is connected to the suspension rod;

[0019] It also includes an expansion member, the expansion member includes a first hinge rod and a second hinge rod, the suspension rod is also provided with a fourth telescopic member and a movable ring, the fourth telescopic member and the movable ring are both sleeved on the suspension rod, one end of the fourth telescopic member is fixed to the suspension rod, and the other end is connected to the end surface of the movable ring to form a sealed space;

[0020] One end of the second hinged rod is hinged to the movable ring;

[0021] One end of the first hinged rod is hinged to the side wall of the suspension rod, and the other end of the first hinged rod is hinged to the other end of the second hinged rod;

[0022] A channel is provided in the suspension rod, one end of the channel is communicated with the third telescopic member, and the other end of the channel is communicated with the sealed space of the fourth telescopic member.

[0023] Furthermore, a limiting rod is provided on the top of the painting station, and the limiting rod is located directly below the hanging rod.

[0024] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0025] 1. The utility model can suspend the propeller under the spray head by using the suspension member, so that after one side of the propeller is painted, the other side of the propeller can be immediately painted, avoiding the traditional situation of waiting for the paint to dry before painting the other side of the propeller, thereby improving the painting efficiency of the propeller;

[0026] 2. After the upper surface of the suspended propeller blade is painted, the utility model can clamp the two ends of the propeller by using the provided clamping blocks, and then use the rotary drive member to drive the movable rod to rotate, thereby completing the automatic reverse of the propeller so that the other surface of the propeller can be painted. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0028] Figure 1 It is a schematic diagram of the structure of the utility model;

[0029] Figure 2 For this utility model Figure 1 The structural diagram of the enlarged part A in the middle;

[0030] Figure 3 This is a schematic diagram of the connection structure between the suspension rod and the vertical pipe of the utility model;

[0031] Figure 4It is a schematic diagram of the connection structure between the clamping member and the cross bar of the utility model;

[0032] Figure 5 For this utility model Figure 4 Schematic diagram of the structure after the enlargement of part B in the middle.

[0033] Marks and corresponding parts names in the attached drawings:

[0034] 1. Vertical plate; 2. Air pump; 3. Paint spraying table; 4. Clamping part; 5. Limit rod; 6. Paint box; 7. Cross plate; 8. Spray head; 9. Cylinder; 10. Vertical pipe; 11. Blade; 12. Movable ring; 13. Channel; 14. Fourth telescopic part; 15. Mounting head; 16. First hinged rod; 17. Hanging rod; 18. Second hinged rod; 19. Third telescopic part; 20. Cross bar; 21. First telescopic part; 22. Airbag part; 24. Fixed plate; 25. Hose; 26. Clamping block; 28. Second telescopic part; 30. Connecting pipe; 31. Pull rope; 32. Movable rod; 33. Guide rod; 34. Second elastic part; 35. Clamping plate; 36. Clamping groove; 37. Air inlet; 38. First bearing; 39. Movable plate. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0036] Example

[0037] like Figures 1 to 5 As shown, the utility model includes a paint spraying station 3, on which a paint spraying rack is provided, on which a plurality of spray heads 8 are provided, and on which a cross bar 20 is also provided. A movable rod 32 is provided in the cross bar 20, and one end of the movable rod 32 is movably connected to the cross bar 20, and the other end is provided with a clamping member 4 for clamping the blades 11 of the propeller, and a rotating driving member is also provided on the cross bar 20, and the rotating driving member is used to drive the movable rod 32 to rotate around the axis of the movable rod 32; the paint spraying rack is also provided with a suspension member that can be extended and retracted in the vertical direction, and the suspension member is used to be connected to the mounting head 15 of the propeller and suspend the propeller below the spray head 8.

[0038] In view of the prior art, when processing the propeller of a large unmanned aerial vehicle, in order to prevent the propeller from rusting, it is usually necessary to spray paint the surface of the propeller. The traditional method is to place the propeller horizontally on the paint spraying table 3, and then spray paint one of the surfaces of the propeller. After the paint on this surface is dried, turn the propeller over, and finally spray paint the other side of the propeller. This makes it necessary to spend a long time waiting for the paint to dry, which prolongs the manufacturing cycle of the propeller, and it is more laborious to manually reverse the large propeller. For this reason, the technical solution is provided with a hanging part on the paint spraying rack on the paint spraying table 3, and the propeller mounting head 15 can be connected by using the set hanging part, so that the propeller to be painted is suspended below the spray head 8, and the spray head 8 is used to spray the propeller rotating on the hanging part. The upper surface of the propeller blade 11 is painted. After the painting of the upper surface of the blade 11 is completed, the movable rod 32 in the cross bar 20 is used to drive the clamping member 4 to move horizontally, and finally the end face of the propeller blade 11 is clamped. Then the hanging member is moved upward, and the connection between the hanging member and the propeller mounting head 15 is removed. The rotating driving member on the cross bar 20 is used to drive the rotation of the movable rod 32. When the movable rod 32 rotates, the clamping member 4 will be driven to rotate together, thereby driving the propeller to rotate 180°, so that the lower surface of the propeller to be painted is in an upward state, and then the hanging member is reconnected to the propeller mounting head 15, and the clamping member 4 on the propeller blade 11 is removed, so that the propeller is suspended under the spray head 8 again, and the other side of the propeller is continued to be painted using the spray head 8, and finally the painting of the upper and lower surfaces of the propeller is completed.

[0039] The paint spraying station 3 is also provided with a paint box 6, in which paint for painting is contained. The paint box 6 is connected to the nozzle 8 through a pump body, and the pump body can be used to transport the paint in the paint box 6 to the nozzle 8, and finally the paint is applied from the nozzle 8 to the blade 11, so as to achieve the purpose of painting the propeller blade 11; in order to meet the needs of painting propellers of different lengths, the nozzle 8 is provided with a switch, and the number of nozzles 8 opened is adjusted by the length of the blades 11 suspended on the suspension member, so as to ensure that the blades 11 can be painted by the nozzle 8. The principle of spraying paint using a nozzle is a prior art and will not be elaborated here.

[0040] The paint spray rack includes a vertical plate 1 and a horizontal plate 7, wherein the vertical plate 1 is vertically connected to the top of the paint spray table 3, and the horizontal plate 7 is fixed to the top of the vertical plate 1; the spray head 8 and the hanging part are located at the bottom of the horizontal plate 7, and the cross bar 20 is fixed to the vertical plate 1.

[0041] In order to ensure that the propeller can be in a suspended state, a paint spraying rack with a gate structure is provided on the paint spraying station 3. The paint spraying rack is composed of a vertical plate 1 and a horizontal plate 7. The horizontal plate 7 is stably fixed above the paint spraying station 3 by the vertical plate 1.

[0042] The end of the cross bar 20 facing the clamping member 4 is provided with a mounting blind hole, and a first telescopic member 21 is provided in the mounting blind hole. The movable rod 32 passes through the first telescopic member 21, and the first telescopic member 21 is used to push the movable rod 32 to move along the axial direction of the cross bar 20 in the cross bar 20.

[0043] The mounting blind hole provided in the present embodiment is used to provide a movable space for the cross bar 20, so that the movable rod 32 can move in the mounting blind hole, thereby achieving the purpose of the movable rod 32 pushing the clamping member 4 to move in the horizontal direction; at the same time, in order to ensure that the movable rod 32 can move freely in the horizontal direction, a first telescopic member 21 is also provided in the mounting blind hole of the cross bar 20, and the first telescopic member 21 is fixedly connected to the movable rod 32. An air pump 2 is also provided on the paint spraying table 3, and the air pump 2 is connected to the first telescopic member 21. The first telescopic member 21 is a corrugated tube with closed structures at both ends. Therefore, when the air pump 2 delivers pressurized gas in the first telescopic member 21, the first telescopic member 21 expands and stretches, changing the length of the first telescopic member 21, thereby driving the movable rod 32 to move outward in the mounting blind hole of the cross bar 20, and finally achieving the purpose of driving the clamping member 4 in the horizontal direction and clamping the propeller blade 11.

[0044] After the propeller is flipped, in order to ensure that the clamping member 4 can move back to the initial position normally, a first elastic member is provided in the first telescopic member 21. The first elastic member is distributed along the telescopic direction of the first telescopic member 21, and the two ends of the first elastic member are connected to the two ends of the first telescopic member 21. Therefore, after the pressurized gas delivered to the first telescopic member 21 is discharged, the first telescopic member 21 can be quickly pulled back and retracted under the action of the first elastic member, thereby pulling the movable rod 32 and the clamping member 4 back together.

[0045] A movable plate 39 is also provided in the mounting blind hole of the cross bar 20, and the movable plate 39 is connected to the telescopic end of the first telescopic member 21; a first bearing 38 matching the movable rod 32 is provided on the movable plate 39, and the movable rod 32 extends into the first telescopic member 21 after passing through the movable plate 39, and the first bearing 38 is sleeved on the movable rod 32.

[0046] In this embodiment, in order to ensure that the movable rod 32 can rotate in the cross bar 20 under the action of the rotating drive member, a movable plate 39 for supporting the movable rod 32 is also provided in the mounting blind hole of the cross bar 20. The movable plate 39 is a disc structure, and the outer diameter of the movable plate 39 is consistent with the inner diameter of the mounting blind hole, thereby ensuring that the movable plate 39 can move smoothly in the mounting blind hole of the cross bar 20. At the same time, in order to reduce the friction resistance between the movable rod 32 and the movable plate 39 when the movable rod 32 rotates, a first bearing 38 is also provided on the movable plate 39. The first bearing 38 can ensure that the movable rod 32 can rotate freely on the movable plate 39.

[0047] The rotating driving component includes a second telescopic component 28 and a pull rope 31. The second telescopic component 28 is fixed on the side wall of the cross bar 20. The telescopic end of the second telescopic component 28 is connected to one end of the pull rope 31. The other end of the pull rope 31 is wound around the movable rod 32. The second telescopic component 28 is used to pull the pull rope to move radially toward the cross bar 20.

[0048] In order to ensure that the rotating drive member can normally drive the movable rod 32 to rotate in the first bearing 38 in this embodiment, a second telescopic member 28 is provided on the side wall of the cross bar 20. One end of the second telescopic member 28 is vertically connected to the cross bar 20, and a pull rope 31 is provided on the other end. The pull rope 31 is also connected to the movable rod 32, and the pull rope 31 is wound around the movable rod 32. The second telescopic member 28 is also a bellows, which can be stretched in a direction away from the cross bar 20 after being inflated. When the length of the second telescopic member 28 gradually increases, the second telescopic member 28 will generate a pulling force on the pull rope 31. Therefore, the movable rod 32 can gradually rotate under the action of the pull rope 31, thereby realizing the rotation of the propeller clamped on the clamping member 4. When the second telescopic member 28 is stretched to the maximum displacement, the pull rope 31 just pulls the movable rod 32 to rotate 180°.

[0049] When the painting of the propeller is completed and the next propeller needs to be painted, the movable rod 32 is manually rotated in the opposite direction so that the pull rope 31 is rewound around the movable rod 32 again. When the second telescopic member 28 is retracted to the minimum amount, the clamping member 4 on the movable rod 32 is reversed by 180°.

[0050] The clamping member 4 includes a clamping block 26 and an air jet, the clamping block 26 is connected to the movable rod 32, a clamping groove 36 is provided on the clamping block 26, and the air jet is fixed on the clamping block 26; a fixing plate 24 is also provided in the mounting blind hole of the cross bar 20, the fixing plate 24 is fixed at the opening of the mounting blind hole, a second bearing matching the movable rod 32 is provided on the fixing plate 24, and the second bearing is sleeved on the movable rod 32; an airbag member 22 is also provided between the fixing plate 24 and the movable plate 39, and the airbag member 22 is connected to the air jet through a hose 25.

[0051] In order to clamp the blades 11 of propellers of different sizes, a clamping groove 36 is provided on the clamping surface of the clamping block 26 in the present embodiment. After one of the surfaces of the propeller is painted by the suspension member, the air pump 2 is used to deliver pressurized gas to the first telescopic member 21, so that the first telescopic member 21 pushes the movable rod 32 to extend from the cross bar 20, and pushes the clamping block 26 to move toward the propeller blade 11, so that the propeller blade 11 is in the clamping groove 36 of the clamping block 26, and the end surface of the clamping groove 36 is used to act on the two ends of the blade 11, so as to finally clamp the propeller blade. After the propeller is clamped, the pull rope 31 is pulled by the second telescopic member 28, so as to realize the rotation of the propeller on the clamping block 26.

[0052] At the same time, in the present embodiment, when the first telescopic member 21 pushes the movable rod 32 to move, it simultaneously pushes the movable plate 39 to move along with it. During the movement, the movable plate 39 will squeeze the airbag member 22 located between the movable plate 39 and the fixed plate 24. When the airbag member 22 is squeezed by the movable plate 39, the gas inside it will be squeezed into the hose 25 and finally blown out from the air jet. Since the air jet is tilted downward, when the clamping block 26 moves toward the propeller, the airflow blown out from the air jet will act on the surface of the blade 11 that has just been painted, thereby achieving the purpose of accelerating the drying of the paint on the blade.

[0053] The airbag component 22 is connected to the movable plate 39. After the propeller is clamped, after the gas introduced into the first telescopic component 21 is discharged, the first telescopic component 21 pulls the movable plate 39 back, and the movable plate 39 pulls the airbag component 22 to stretch again during the retreat process. Negative pressure is generated inside the airbag component 22 during the stretching process, and the external gas is sucked into the airbag component 22 through the hose 25 again, so that new gas can be ejected from the jet port when the airbag component 22 is subsequently used.

[0054] The movable rod 32 is also provided with a connecting hole, which is distributed axially along the movable rod 32 and connected with both ends of the movable rod 32; a guide rod 33 with a diameter the same as the inner diameter of the connecting hole is provided in the connecting hole, and the guide rod 33 extends into the clamping groove 36 of the clamping block 26; a connecting pipe 30 is provided in the guide rod 33, and an air inlet 37 is also provided on the side wall of the guide rod 33; one end of the connecting pipe 30 is connected with the air inlet 37, and the other end is connected with the second telescopic member 28.

[0055] In order to realize automatic gas delivery in the second telescopic member 28 in the present embodiment, so that the second telescopic member 28 pulls the pull rope 31 to move, a guide rod 33 is also provided in the movable rod 32, and the guide rod 33 can move axially in the movable rod 32 along the movable rod 32. The end face of the clamping groove of the clamping block 26 is also provided with a groove, and a second elastic member 34 is provided in the groove, and the second elastic member 34 is sleeved on the guide rod 33. The end of the guide rod 33 located in the clamping groove 36 is also provided with a clamping plate 35. In the initial state, the clamping plate 35 is pushed to move to the notch of the clamping groove 36 under the action of the second elastic member 34. In this state, the other end of the guide rod 33 is retracted into the movable rod 32. At this time, the first telescopic member 21 is not connected to the second telescopic member 28; when gas is introduced into the first telescopic member 21 to push the movable rod 32 to move, the movable rod 3 The clamping block 26 on 2 moves toward the blade 11 of the propeller, so that the blade 11 extends into the clamping groove 36 of the clamping block 26. When the blade 11 enters the clamping groove 36, the end of the blade 11 acts on the clamping plate 35 to push the clamping plate 35 to move back. When moving, the clamping plate 35 pushes the guide rod 33 to move in the movable rod 32, and finally the guide rod 33 extends from the connecting hole of the movable rod 32 into the first telescopic member 21, and the air inlet 37 on the guide rod 33 is in the first telescopic member 21. At this time, under the action of the air inlet 37, the first telescopic member 21 is connected with the second telescopic member 28, and the gas delivered to the first telescopic member 21 by the air pump 2 will enter the connecting pipe 30 through the air inlet 37. Finally, the gas is transferred to the second telescopic member 28 through the connecting pipe 30, thereby achieving the purpose of expanding and stretching the second telescopic member 28.

[0056] The expansion member also includes an expansion member, which includes a first hinge rod 16 and a second hinge rod 18. The suspension member includes a vertical tube 10, a third telescopic member 19 and a suspension rod 17. A cylinder 9 is also provided on the top of the horizontal plate 7. The output end of the cylinder 9 is connected to the vertical tube 10. One end of the third telescopic member 19 is fixed in the vertical tube 10, and the other movable end is connected to the suspension rod 17. The suspension rod 17 is also provided with a fourth telescopic member 14 and a movable ring 12. The fourth telescopic member 14 and the movable ring 12 are both sleeved on the suspension rod 1 7, one end of the fourth telescopic member 14 is fixed on the hanging rod 17, and the other end is connected to the end face of the movable ring 12 to form a sealed space; one end of the second hinged rod 18 is hinged to the movable ring 12; one end of the first hinged rod 16 is hinged to the side wall of the hanging rod 17, and the other end of the first hinged rod 16 is hinged to the other end of the second hinged rod 18; a channel 13 is provided in the hanging rod 17, one end of the channel 13 is connected to the third telescopic member 19, and the other end is connected to the sealed space of the fourth telescopic member 14.

[0057] A limiting rod 5 is also provided on the top of the painting platform 3 , and the limiting rod 5 is located directly below the hanging rod 17 .

[0058] In this embodiment, in order to ensure that the provided suspension can be connected to the mounting head 15 of the propeller, so that the propeller is suspended below the spray head 8, so that the spray head 8 can be used to spray paint the blades 11 of the propeller, a vertical pipe 10 is provided at the bottom of the horizontal plate 7. The vertical pipe 10 is connected to the output end of the cylinder 9. When the cylinder 9 is working, it can drive the vertical pipe 10 to move in the vertical direction to adjust the height of the vertical pipe 10.

[0059] The diameter of the suspension rod 17 is smaller than the diameter of the bolt hole of the mounting head 15. When working, the cylinder 9 drives the vertical pipe 10 to move downward, so that the suspension rod 17 passes through the bolt hole on the propeller mounting head 15. When the bottom of the suspension rod 17 contacts the top of the limit rod 5, the limit rod 5 is used to limit the suspension rod 17 from continuing to move downward. At this time, the cylinder 9 continues to push the vertical pipe 10 to move downward and squeeze the third telescopic member 19. Since the third telescopic member 19 is a bellows, after being squeezed, the gas inside it will be transferred to the fourth telescopic member 19 through the channel 13 inside the suspension rod 17. The fourth telescopic member 14 is forced to expand and stretch downward in the contraction member 14, and the fourth telescopic member 14 will push the movable ring 12 to move downward on the suspension rod 17 during the downward stretching and expansion process. Since the suspension rod 17 is provided with a first hinged rod 16 and a second hinged rod 18, as the movable ring 12 moves downward, the hinged joint of the first hinged rod 16 and the second hinged rod 18 is expanded in the direction away from the suspension rod 17, and finally the second hinged rod 18 expanded outward generates a supporting force for the propeller mounting head 15, thereby hanging the propeller on the suspension rod 17.

[0060] In order to ensure that the first hinged rod 16 and the second hinged rod 18 can stably support the propeller, a plurality of groups of first hinged rods 16 and second hinged rods 18 are arranged in the circumferential direction of the suspension rod 17 .

[0061] After the upper surface of the propeller blade 11 is painted, when the lower surface of the propeller blade 11 needs to be painted, the movable rod 32 is first used to push the clamping block 26 to move, so that the propeller blade 11 is in the clamping groove 36 of the clamping block 26, and the clamping groove 36 is used to support the propeller blade 11, and then the cylinder 9 is used to drive the vertical pipe 10 to retreat upward to remove the squeezing of the third telescopic member 19. The third telescopic member 19 recovers its deformation upward. In the process of recovering the deformation, negative pressure is generated inside to suck back the gas transferred to the fourth telescopic member 14, so that the bottom of the fourth telescopic member 14 pulls the movable ring 12 to move upward. In the process of moving upward, the movable ring 12 pulls the second hinged rod 18 toward the side wall of the suspension rod 17, thereby removing the second hinged rod 18. The force exerted by the connecting rod 18 on the propeller mounting head 15 eventually causes the suspension rod 17 to move out of the propeller mounting head 15, and then continues to deliver pressurized gas to the first telescopic member 21, uses the clamping block 26 to clamp the propeller blades 11, and extends the guide rod 33 into the first telescopic member 21, so that the first telescopic member 21 is connected to the second telescopic member 28, and the air pressure entering the first telescopic member 21 can be transferred to the second telescopic member 28, and the pull rope 31 is pulled to drive the rotation of the movable rod 32 to realize the reverse side of the propeller. When the reverse side of the propeller is completed, the cylinder 9 is reused to achieve the connection with the propeller mounting head 15, so that the propeller continues to be suspended below the spray head 8, and the other side of the propeller blades 11 is continued to be painted using the spray head 8.

[0062] The third telescopic member 19 and the fourth telescopic member 14 are both provided with a third elastic member, and the third elastic member can be used to ensure that the third telescopic member 19 and the fourth telescopic member 14 can quickly restore their deformation.

[0063] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A spray painting device for manufacturing large UAV propellers, comprising a spray painting stand, characterized in that: The paint spraying rack is provided with a cylinder (9), the output end of the cylinder (9) is provided with a vertical pipe (10) penetrating the paint spraying rack, a third telescopic member (19) is provided in the vertical pipe (10), and a hanging rod (17) is provided at the movable end of the third telescopic member (19); The suspension rod (17) is also provided with an expansion member and a fourth telescopic member (14), the fourth telescopic member (14) is sleeved on the suspension rod (17), and the fourth telescopic member (14) is connected to the third telescopic member (19), and the third telescopic member (19) is used to squeeze gas into the fourth telescopic member (14); One end of the expansion member is hinged to the side wall of the suspension rod (17), and the other end is hinged to the fourth telescopic member, and the fourth telescopic member (14) is used to push the expansion member to expand radially along the suspension rod (17); It also includes a limiting rod (5) located below the hanging rod (17).

2. The paint spraying device for manufacturing and applying large-scale UAV propellers according to claim 1 is characterized in that: The expansion member comprises a first hinge rod (16) and a second hinge rod (18); the suspension rod (17) is further provided with a movable ring (12); the movable ring (12) is sleeved on the suspension rod (17); one end of a fourth telescopic member (14) is fixed on the suspension rod (17); the other end is connected to the end surface of the movable ring (12) to form a sealed space; One end of the first hinged rod (16) is hinged to the side wall of the suspension rod (17), and the other end is hinged to one end of the second hinged rod (18), and the other end of the second hinged rod (18) is hinged to the movable ring (12).

3. The paint spraying device for manufacturing large UAV propellers according to claim 2 is characterized in that: A channel (13) is also provided in the suspension rod (17); one end of the channel (13) is communicated with the third telescopic member (19), and the other end of the channel (13) is communicated with the sealed space of the fourth telescopic member (14).

4. The paint spraying device for manufacturing large UAV propellers according to claim 1 is characterized in that: The invention also comprises a painting platform (3), wherein the painting platform (3) is located on the painting platform (3), a plurality of spray heads (8) are arranged on the painting platform, a cross bar (20) is arranged on the painting platform, a movable rod (32) is arranged inside the cross bar (20), one end of the movable rod (32) is movably connected to the cross bar (20), and the other end is provided with a clamping member (4) for clamping the blades (11) of the propeller, and a rotating driving member is also arranged on the cross bar (20), and the rotating driving member is used to drive the movable rod (32) to rotate around the axis of the movable rod (32).

5. The paint spraying device for manufacturing large UAV propellers according to claim 4 is characterized in that: The paint spraying rack comprises a vertical plate (1) and a horizontal plate (7), wherein the vertical plate (1) is vertically connected to the top of the paint spraying table (3), and the horizontal plate (7) is fixed to the top of the vertical plate (1); The spray head (8) and the hanging rod (17) are located at the bottom of the horizontal plate (7), and the horizontal rod (20) is fixed on the vertical plate (1).

6. The paint spraying device for manufacturing large UAV propellers according to claim 4 is characterized in that: The end of the cross bar (20) facing the clamping member (4) is provided with a mounting blind hole, a first telescopic member (21) is provided in the mounting blind hole, the movable rod (32) penetrates into the first telescopic member (21), and the first telescopic member (21) is used to push the movable rod (32) to move in the cross bar (20) along the axial direction of the cross bar (20).

7. The paint spraying device for manufacturing large UAV propellers according to claim 6 is characterized in that: A movable plate (39) is also provided in the installation blind hole of the cross bar (20), and the movable plate (39) is connected to the telescopic end of the first telescopic member (21); The movable plate (39) is provided with a first bearing (38) matching the movable rod (32); the movable rod (32) penetrates the movable plate (39) and extends into the first telescopic member (21); and the first bearing (38) is sleeved on the movable rod (32).

8. The paint spraying device for manufacturing large UAV propellers according to claim 7 is characterized in that: The rotary driving member comprises a second telescopic member (28) and a pull rope (31); the second telescopic member (28) is fixed on the side wall of the cross bar (20); the telescopic end of the second telescopic member (28) is connected to one end of the pull rope (31); the other end of the pull rope (31) is wound around the movable rod (32); the second telescopic member (28) is used to pull the pull rope to move radially toward the cross bar (20).

9. The paint spraying device for manufacturing large UAV propellers according to claim 8, characterized in that: The clamping member (4) comprises a clamping block (26) and an air jet, the clamping block (26) is connected to the movable rod (32), a clamping groove (36) is provided on the clamping block (26), and the air jet is fixed on the clamping block (26); A fixing plate (24) is also provided in the installation blind hole of the cross bar (20), the fixing plate (24) is fixed at the opening of the installation blind hole, a second bearing matching the movable rod (32) is provided on the fixing plate (24), and the second bearing is sleeved on the movable rod (32); An airbag component (22) is also provided between the fixed plate (24) and the movable plate (39), and the airbag component (22) is connected to the air jet port via a hose (25).

10. The paint spraying device for manufacturing large UAV propellers according to claim 9, characterized in that: The movable rod (32) is also provided with a connecting hole, the connecting hole is distributed along the axial direction of the movable rod (32) and is connected with both ends of the movable rod (32), a guide rod (33) having a diameter the same as the inner diameter of the connecting hole is provided in the connecting hole, and the guide rod (33) extends into the clamping groove (36) of the clamping block (26); A connecting pipe (30) is provided inside the guide rod (33), and an air inlet (37) is also provided on the side wall of the guide rod (33). One end of the connecting pipe (30) is connected to the air inlet (37), and the other end is connected to the second telescopic member (28).

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