A spraying device for rack production

Abstract

The present invention relates to the field of spraying technology, and specifically discloses a spraying device for frame production, comprising: a hoisting device for hoisting a frame; an angle adjustment structure, which is arranged on the hoisting device, and the angle adjustment structure comprises a first rotating member and a second rotating member, on which a first wire take-up drum and a second wire take-up drum are respectively installed, and on which a first lifting rope and a second lifting rope are respectively wound, and both the first lifting rope and the second lifting rope are connected to the frame; the spraying device for frame production of the present invention drives the first wire take-up drum and the second wire take-up drum to rotate by the first rotating member and the second rotating member, thereby changing the rising height and the falling height of the first lifting rope and the second lifting rope, so that the frame can be tilted at multiple angles to cooperate with the spraying device to solve the problems of spraying dead angles and uneven spraying.

Description

Technical Field

[0001] The invention relates to the technical field of spraying, and in particular to a spraying device for frame production. Background Art

[0002] The frame of the excavator, also known as the chassis, is the basic supporting component of the excavator. It is divided into two parts: the upper frame and the lower frame. The upper frame is mainly installed with the power system, hydraulic pump, some major hydraulic parts, cab and working device. The lower frame, also known as the walking frame, is generally H-shaped or X-shaped, and is used to install various parts of the rotating and walking mechanism. The upper frame and the lower frame are connected through the support components of the slewing center, and relative rotation is achieved through the slewing mechanism.

[0003] In the related art, for example, the Chinese patent application document with publication number CN109505325A, through the drive of the hydraulic cylinder, the telescopic arm on the crawler beam can be telescoped in the guide hole, so as to adjust the width between the outer sides of the two crawler beams, that is, to adjust the width of the excavator chassis, so that the excavator can pass through some narrow passages by adjusting to reduce the width of the chassis, and increase the width of the chassis during operation to improve the stability of the excavator. The upper frame and the lower frame of the invention are connected by the support component of the rotation center, which leads to uneven spraying when it is sprayed.

[0004] Before the current spraying device of the excavator frame is operated, the frame parts that have been electrophoretically treated need to be suspended on a special sling with iron chains or wire ropes, and then transported to the spraying area using a suspension conveying system. During the spraying process, the mechanical arm is responsible for spraying the paint on the frame. However, due to the limitation of the hoisting method of the sling, the spraying operation of the mechanical arm in the rotation center area will be affected, resulting in uneven coating in this area, affecting the spraying effect of the frame. Summary of the invention

[0005] The present invention provides a spraying device for frame production, aiming to solve the problem in the related art that the limitation of the lifting method of the sling will affect the spraying operation of the robot arm in the rotation center area, thereby causing uneven coating in the area and affecting the spraying effect of the frame.

[0006] The spraying device for frame production of the present invention comprises: a hoisting device for hoisting the frame; an angle adjustment structure arranged on the hoisting device, the angle adjustment structure comprising a first rotating member and a second rotating member, the first rotating member and the second rotating member are respectively mounted with a first wire reel and a second wire reel, the first wire reel and the second wire reel are respectively wound with a first lifting rope and a second lifting rope, the first lifting rope and the second lifting rope are both connected to the frame; the rising height and the falling height of the first lifting rope and the second lifting rope are changed by the rotation direction of the first rotating member and the second rotating member, thereby changing the inclination angle of the frame.

[0007] The effect is that the first rotating member and the second rotating member drive the first wire take-up drum and the second wire take-up drum to rotate, thereby changing the rising height and the falling height of the first suspension rope and the second suspension rope, so that the frame can be tilted at multiple angles, solving the problem of uneven spraying when the spray device sprays the frame.

[0008] Furthermore, it also includes a placement component and a moving mechanism, the sling device is installed on the moving mechanism, the placement component includes a fixed frame and a slide rail fixed on the fixed frame, and the moving mechanism is connected to the slide rail so that the moving mechanism can move along the slide rail, thereby driving the sling device to move.

[0009] Furthermore, the moving mechanism includes a connecting member and a moving wheel arranged on the connecting member, the moving wheel is installed in a slideway on the slide rail, a first fixed rod is fixedly installed on the lower end of the connecting member, a second fixed rod is fixedly connected to the lower end of the first fixed rod, a mounting rod is fixedly connected to the lower surface of the second fixed rod, and the mounting rod is movably or fixedly connected to the sling device.

[0010] The effect is that the moving wheel moves along the slideway through the cooperation between the moving wheel and the slideway on the slide rail, thereby reducing friction and improving the moving efficiency of the moving mechanism.

[0011] Furthermore, it also includes a driving device, which includes a first driving source and a second driving source, the first driving source is used to drive the first rotating member to reverse and the second rotating member to rotate forward; the second driving source drives the first rotating member and the second rotating member to reverse at the same time.

[0012] Furthermore, the driving device also includes a first driving member, a second driving member and a third driving member, the third driving member is meshingly connected with the second driving member, the third driving member is meshingly connected with the second rotating member, and the first driving member is meshingly connected with the first rotating member, driving the first rotating member to reverse and the second rotating member to rotate forward.

[0013] The effect is that the first driving member drives the first rotating member to rotate reversely, and the third driving member drives the second rotating member to rotate forwardly, so that the purpose of tilting the frame forward and backward is achieved, and the spraying effect is improved.

[0014] Furthermore, the output end of the second driving source is fixedly connected with a fourth driving member, and the fourth driving member can be meshed and connected with the first rotating member and the second rotating member at the same time, driving the first rotating member and the second rotating member to reverse at the same time.

[0015] The effect is that the fourth driving member drives the first rotating member and the second rotating member to reverse at the same time, so that the frame can be tilted left and right, thereby improving the spraying effect.

[0016] Furthermore, the sling device includes a hanging plate and threading holes opened at the four corners of the hanging plate, and a mounting portion is fixedly connected to the hanging plate, and the mounting portion has a rotatable roller, and the first hanging rope and the second hanging rope are connected to the frame through the roller.

[0017] Furthermore, it also includes a locking assembly, which includes a movable member, and the movable member has a limiting portion, and the limiting portion is adapted to the gap between two teeth on the first rotating member to limit the first rotating member and the second rotating member.

[0018] The effect is that the first rotating member and the second rotating member can be limited, thereby avoiding the problem of the frame automatically tilting due to the first rotating member and the second rotating member rotating automatically during the movement.

[0019] Furthermore, it also includes a third support member fixed on the fixed frame, the third support member has an unlocking portion, and the locking assembly also includes a contact portion fixed on the movable member, the contact portion has a protrusion, the protrusion is adapted to the unlocking portion, and the unlocking portion is inclined and is used to release the limit of the first rotating member and the second rotating member.

[0020] Beneficial Effects

[0021] (1) The first rotating member and the second rotating member drive the first wire take-up drum and the second wire take-up drum to rotate, thereby changing the rising height and the falling height of the first hanging rope and the second hanging rope, so that the frame can be tilted at multiple angles to cooperate with the spraying device to solve the problems of spraying dead angle and uneven spraying.

[0022] (2) The locking assembly can be used to limit the angle adjustment structure during movement, thereby preventing the angle adjustment structure from moving autonomously and causing the angle to tilt too much, thereby affecting the spraying effect of the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the present invention.

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of a support frame according to a specific embodiment of the present invention.

[0025] Figure 3 It is a schematic structural diagram of a first driving source in a specific embodiment of the present invention.

[0026] Figure 4 It is a structural schematic diagram of a moving mechanism of a specific embodiment of the present invention.

[0027] Figure 5 It is a structural schematic diagram of the angle adjustment structure of a specific embodiment of the present invention.

[0028] Figure 6 It is a specific embodiment of the present invention Figure 5 A magnified schematic diagram of the structure in the middle.

[0029] Figure 7 It is a structural schematic diagram of the second rotating member in a specific embodiment of the present invention.

[0030] Figure 8 It is a schematic structural diagram of a second take-up reel in a specific embodiment of the present invention.

[0031] Fig. 9 It is a structural schematic diagram of a locking assembly in a specific embodiment of the present invention.

[0032] Reference numerals:

[0033] 10. Placement assembly; 11. Fixing frame; 12. Slide rail; 121. Slideway; 13. Support frame; 131. Support part; 132. First support member; 133. Second support member; 134. Third support member; 1341. Unlocking part;

[0034] 20. Moving mechanism; 21. Connecting member; 22. Moving wheel; 23. First fixing rod; 24. Second fixing rod; 25. Mounting rod;

[0035] 30. driving device; 31. first driving source; 311. first driving member; 312. second driving member; 313. third driving member; 314. connecting column; 32. second driving source; 321. fourth driving member;

[0036] 40. Hanging device; 41. Hanging plate; 411. Threading hole; 42. Mounting piece; 43. Fixing plate; 44. Mounting part; 45. Roller;

[0037] 50. Angle adjustment structure; 51. Rotating member; 52. First rotating member; 53. First wire take-up drum; 531. First suspension rope; 54. Second rotating member; 541. Sleeve; 55. Second wire take-up drum; 551. Second suspension rope;

[0038] 60. Locking assembly; 61. Mounting shell; 611. Limiting hole; 62. Elastic member; 63. Moving member; 631. Limiting portion; 632. Limiting rod; 64. Contact portion; 641. Protruding portion. DETAILED DESCRIPTION

[0039] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0040] like Figures 1 to 9As shown, the spraying device for frame production of the present invention includes a placement component 10, on which a hoisting device 40 is provided, and the hoisting device 40 is used to hang the frame in the air, and an angle adjustment structure 50 is provided on the hoisting device 40, and the angle adjustment structure 50 is used to adjust the inclination angle of the frame, so that the frame can be tilted at multiple angles to cooperate with the spraying device to solve the problems of dead angles and uneven spraying.

[0041] like Figure 1 and Figure 2 As shown, the placement assembly 10 includes a fixed frame 11, and the number of fixed frames 11 is multiple, and the multiple fixed frames 11 are arranged equidistantly in the horizontal direction. A slide rail 12 is also fixedly connected to the fixed frame 11. A moving mechanism 20 is installed on the slide rail 12, and a hanging device 40 is installed on the moving mechanism 20. The moving mechanism 20 can move along the length direction of the slide rail 12, and the movement of the slide rail 12 can drive the hanging device 40 to move, thereby driving the frame to move.

[0042] like Figure 1 , Figure 2 and Figure 3 As shown, the placement assembly 10 also includes a support frame 13, and the support frame 13 has a plurality of support portions 131, and the support portions 131 are distributed in a tooth-like manner on both sides of the interior of the support frame 13, so that the gap between the two rows of support portions 131 can be used for the movement of the moving mechanism 20. A first support member 132 is also provided on the support frame 13, and the first support member 132 is used to install the driving device 30.

[0043] In another embodiment, the movement of the lifting device 40 can be electrically controlled by means of the structure of electric guide rails and electric sliders.

[0044] like Figure 4 As shown, the moving mechanism 20 includes a connecting member 21. In this embodiment, the number of the connecting members 21 is four. In other embodiments, the number of the connecting members 21 may be three, six or five. It should be noted that the connecting member 21 is Y-shaped, and moving wheels 22 are rotatably installed on both side walls of the upper opening of the connecting member 21, which are used to cooperate with the slide rail 12 to drive the sling device 40 to move along the slide rail 12. Specifically, slideways 121 are provided on both sides of the slide rail 12, and the lower part of the slide rail 12 is located inside the upper end opening of the connecting member 21, so that the moving wheel 22 is installed in the slideway 121 of the slide rail 12, which is convenient for driving the sling device 40 to move. In addition, a first fixing rod 23 is also installed at the bottom of the connecting member 21, and the bottom of the first fixing rod 23 is fixedly connected to the second fixing rod 24, and the bottom ends of the second fixing rod 24 are fixedly connected to the mounting rods 25, and the mounting rods 25 are used to be bolted to the sling device 40, which is convenient for installing and disassembling the sling device 40.

[0045] like Figure 5 As shown, the sling device 40 includes a sling plate 41, and four mounting members 42 are fixed on the upper surface of the sling plate 41. The four mounting members 42 correspond to the positions of the four mounting rods 25, and the mounting rods 25 are connected to the mounting members 42 by bolts, so that the sling device 40 is conveniently installed on the mobile mechanism 20. Mounting parts 44 are also fixedly installed at the four corners of the upper surface of the sling plate 41, and rollers 45 are movably installed on the upper end of the mounting parts 44. A fixing plate 43 is also fixedly installed on the upper surface of the sling plate 41, and the fixing plate 43 and the rollers 45 are used to install the angle adjustment structure 50.

[0046] It should be noted that, in this embodiment, the length direction of the rack is defined as the left-right direction, and the width direction of the rack is defined as the front-back direction.

[0047] like Figures 5 to 8 As shown, the angle adjustment structure 50 includes a first rotating member 52 and a second rotating member 54. The first rotating member 52 is provided with a first hanging rope 531, and the second rotating member 54 is provided with a second hanging rope 551. One end of the first hanging rope 531 and the second hanging rope 551 pass through the roller 45 and pass through the threading hole 411 to connect with the frame. One end of the first hanging rope 531 passes through the roller 45 located at the right front of the hanging plate 41, and one end of the first hanging rope 531 is called the right front end, and the other end of the first hanging rope 531 passes through the roller 45 located at the left rear of the hanging plate 41, and the other end of the first hanging rope 531 is called the left rear end; one end of the second hanging rope 551 passes through the roller 45 located at the left front of the hanging plate 41, and one end of the second hanging rope 551 is called the left front end, and the other end of the second hanging rope 551 passes through the roller 45 located at the right rear of the hanging plate 41, and the other end of the second hanging rope 551 is called the right rear end.

[0048] When the first rotating member 52 and the second rotating member 54 rotate inversely at the same time, the left rear end of the first hanging rope 531 and the left front end of the second hanging rope 551 can be driven to rise at the same time, and the right front end of the first hanging rope 531 and the right rear end of the second hanging rope 551 can be driven to fall on the left side and rise on the right side, thereby causing the frame to tilt left and right. When the first rotating member 52 rotates inversely and the second rotating member 54 rotates forwardly, the first rotating member 52 can rotate inversely to drive the left rear end of the first hanging rope 531 to fall and the right front end of the first hanging rope 531 to rise, and the second rotating member 54 can rotate forwardly to drive the left front end of the second hanging rope 551 to rise and the right rear end of the second hanging rope 551 to fall, thereby causing the frame to tilt forward and backward.

[0049] Specifically, the angle adjustment structure 50 includes a rotating member 51 rotatably mounted on the fixed plate 43. In one embodiment, a bearing can be installed between the rotating member 51 and the fixed plate 43 so that the rotating member 51 can rotate on the fixed plate 43. Specifically, a groove for placing the bearing is opened in the middle of the fixed plate 43, and the bearing is fixed in the groove, and then the lower end of the outer surface of the rotating member 51 is fixed to the inner surface of the inner shaft of the bearing so that the rotating member 51 can rotate.

[0050] The first rotating member 52 and the second rotating member 54 are both arranged on the rotating member 51. Specifically, the inner surface of the first rotating member 52 is fixedly connected to the upper end of the outer surface of the rotating member 51, and the inner surface of the second rotating member 54 is fixedly connected to a sleeve 541, which is sleeved on the outer surface of the rotating member 51. In addition, a first wire take-up drum 53 is fixedly installed on the lower end of the outer surface of the rotating member 51, and a first hanging rope 531 is arranged on the first wire take-up drum 53. A second wire take-up drum 55 is also fixedly connected to the outer surface of the sleeve 541, and the second hanging rope 551 is arranged on the second wire take-up drum 55.

[0051] In this embodiment, the first suspension rope 531 and the second suspension rope 551 are arranged in such a manner that the first suspension rope 531 is wound clockwise on the first take-up drum 53, and the second suspension rope 551 is also wound clockwise on the second take-up drum 55. In other embodiments, the first suspension rope 531 and the second suspension rope 551 can be wound in other ways, for example, the first suspension rope 531 and the second suspension rope 551 are wound counterclockwise on the drum, so that the length of the rope can be changed, thereby changing the inclination angle of the frame.

[0052] like Figure 2 and Figure 3 As shown, the driving device 30 includes a first driving source 31 fixed on the first supporting member 132, and a connecting column 314 movably mounted on the second supporting member 133, and a third driving member 313 is fixedly connected to the outer surface of the connecting column 314. The first driving source 31 is used to drive the first rotating member 52 and the second rotating member 54 to rotate, so that the first rotating member 52 is reversed and the second rotating member 54 is forwardly rotated. Specifically, the first driving member 311 is fixedly connected to the outer surface of the output end of the first driving source 31, and the second driving member 312 is fixedly connected to the bottom of the output end of the first driving source 31.

[0053] It should be noted that the first driving member 311, the second driving member 312, the third driving member 313, the first rotating member 52 and the second rotating member 54 are all gears. The first driving member 311 can be meshed and connected with the first rotating member 52 to drive the first rotating member 52 to rotate in reverse; the third driving member 313 can be meshed and connected with the second rotating member 54 to drive the second rotating member 54 to rotate forward, thereby tilting the frame forward and backward.

[0054] The driving device 30 also includes a second driving source 32 and a fourth driving member 321 fixed to the output end of the second driving source 32. The fourth driving member 321 is a gear, and the thickness of the fourth driving member 321 is greater than the distance between the first rotating member 52 and the second rotating member 54, so that the fourth driving member 321 can be connected to the first rotating member 52 and the second rotating member 54. When the angle adjustment structure 50 moves to the second driving source 32, the first rotating member 52 and the second rotating member 54 are both meshed and connected with the fourth driving member 321, so that the fourth driving member 321 simultaneously drives the first rotating member 52 and the second rotating member 54 to reverse, thereby tilting the frame left and right. Among them, the first driving source 31 and the second driving source 32 are both motors.

[0055] It should be noted that the sling device 40 can be moved along the slide rail 12, so that the sling device 40 can be moved to the first drive source 31 and the second drive source 32. However, during the movement of the sling device 40, the first rotating member 52 and the second rotating member 54 may rotate autonomously, resulting in an excessively large tilt angle of the frame, affecting the subsequent painting of the frame. Therefore, a locking assembly 60 is also provided on the placement assembly 10 to automatically lock the first rotating member 52 and the second rotating member 54 to avoid the problem that the first rotating member 52 and the second rotating member 54 rotate autonomously during the movement.

[0056] like Figure 4 and Fig. 9 As shown, the locking assembly 60 includes a mounting shell 61 fixed on the fixed plate 43, and a plurality of elastic members 62 are fixedly connected to the inner wall of one side of the mounting shell 61. The elastic member 62 is a spring, and the other end of the elastic member 62 is fixedly connected to the moving member 63. The moving member 63 has a limiting portion 631 extending outward toward one side of the moving member 63, and the limiting portion 631 is adapted to the gap between two teeth on the first rotating member 52. The elastic force of the elastic member 62 on the moving member 63 causes the moving member 63 to move toward the first rotating member 52, so that the limiting portion 631 can be stuck between the two teeth on the first rotating member 52, and the first rotating member 52 and the second rotating member 54 are limited, so as to prevent the first rotating member 52 and the second rotating member 54 from moving autonomously.

[0057] In one embodiment, two third support members 134 are further disposed on the support frame 13 . The two third support members 134 are respectively located at the first driving source 31 and the second driving source 32 , and both of the two third support members 134 have unlocking portions 1341 .

[0058] A limiting hole 611 is further provided on one side of the mounting shell 61 , and a limiting rod 632 is provided on one side of the moving member 63 . The middle part of the limiting rod 632 is located in the limiting hole 611 , so as to limit the moving member 63 and prevent the moving member 63 from moving up and down. In addition, a contact portion 64 is fixedly connected to the top of the movable member 63, and a protrusion 641 is provided on one side of the contact portion 64. The protrusion 641 is adapted to the unlocking portion 1341 on the third support member 134, and the unlocking portion 1341 is arranged at an angle. When the protrusion 641 moves on the unlocking portion 1341, it can drive the contact portion 64 to gradually move away from the first rotating member 52 until the protrusion 641 moves to the plane of the unlocking portion 1341. At this time, the limiting portion 631 will disengage from the first rotating member 52 and the second rotating member 54, releasing the limiting of the first rotating member 52 and the second rotating member 54, and at the same time, the first rotating member 52 and the second rotating member 54 will be meshed and connected with the first driving member 311 and the third driving member 313 respectively. Similarly, the second driving source 32 is also provided with the same mechanism. When the sling device 40 moves to the second driving source 32, the limiting of the first rotating member 52 and the second rotating member 54 is released, and the fourth driving member 321 is meshed and connected with the first driving member 311 and the third driving member 313.

[0059] Working principle: The frame is installed on the first lifting rope 531 and the second lifting rope 551, and then the lifting device 40 is moved by the moving mechanism 20, and the lifting device 40 drives the frame to move. When the lifting device 40 moves to the unlocking portion 1341 at the first driving source 31, it can drive the contact portion 64 to gradually move away from the first rotating member 52 until the protrusion 641 moves to the plane of the unlocking portion 1341. At this time, the limiting portion 631 will be separated from the first rotating member 52 and the second rotating member 54, and the limiting of the first rotating member 52 and the second rotating member 54 will be released. And the first driving member 311 and the third driving member 313 will be meshed and connected with the first rotating member 52 and the second rotating member 54 respectively, thereby driving the first rotating member 52 and the second rotating member 54 to rotate and adjust the tilt angle of the frame. Similarly, when the lifting device 40 moves to the unlocking portion 1341 at the second driving source 32, the fourth driving member 321 will be connected to the first rotating member 52 and the second rotating member 54 at the same time to adjust the tilt angle of the frame.

[0060] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0061] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0062] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A spraying device for frame production, characterized in that: include: A lifting device (40) for lifting the frame; An angle adjustment structure (50) is arranged on the sling device (40), and the angle adjustment structure (50) comprises a first rotating member (52) and a second rotating member (54), wherein a first wire take-up drum (53) and a second wire take-up drum (55) are respectively mounted on the first rotating member (52) and the second rotating member (54), wherein a first lifting rope (531) and a second lifting rope (551) are respectively wound around the first lifting rope (53) and the second lifting rope (551), and the first lifting rope (531) and the second lifting rope (551) are both connected to the frame; the rising height and the falling height of the first lifting rope (531) and the second lifting rope (551) are changed by the rotation direction of the first rotating member (52) and the second rotating member (54), thereby changing the inclination angle of the frame; The device also comprises a driving device (30), wherein the driving device (30) comprises a first driving source (31) and a second driving source (32), wherein the first driving source (31) is used to drive the first rotating member (52) to rotate in reverse and the second rotating member (54) to rotate in forward direction; and the second driving source (32) drives the first rotating member (52) and the second rotating member (54) to rotate in reverse at the same time. The output end of the second driving source (32) is fixedly connected to a fourth driving member (321), and the fourth driving member (321) can be meshedly connected with the first rotating member (52) and the second rotating member (54) at the same time, thereby driving the first rotating member (52) and the second rotating member (54) to reverse at the same time.

2. The spraying device for frame production according to claim 1, characterized in that: It also includes a placement component (10) and a moving mechanism (20), the sling device (40) being mounted on the moving mechanism (20), the placement component (10) including a fixed frame (11) and a slide rail (12) fixed on the fixed frame (11), and the moving mechanism (20) being connected to the slide rail (12) so that the moving mechanism (20) can move along the slide rail (12), thereby driving the sling device (40) to move.

3. The spraying device for frame production according to claim 2, characterized in that: The moving mechanism (20) comprises a connecting member (21) and a moving wheel (22) arranged on the connecting member (21); the moving wheel (22) is installed in a slideway (121) on the slide rail (12); a first fixing rod (23) is fixedly installed at the lower end of the connecting member (21); a second fixing rod (24) is fixedly connected to the lower end of the first fixing rod (23); a mounting rod (25) is fixedly connected to the lower surface of the second fixing rod (24); and the mounting rod (25) is movably or fixedly connected to the sling device (40).

4. The spraying device for frame production according to claim 1, characterized in that: The driving device (30) further comprises a first driving member (311), a second driving member (312) and a third driving member (313); the third driving member (313) is meshingly connected with the second driving member (312); the third driving member (313) is meshingly connected with the second rotating member (54); the first driving member (311) is meshingly connected with the first rotating member (52), driving the first rotating member (52) to rotate in reverse and the second rotating member (54) to rotate in the forward direction.

5. The spraying device for frame production according to claim 1, characterized in that: The sling device (40) comprises a sling plate (41) and threading holes (411) provided at four corners of the sling plate (41). A mounting portion (44) is fixedly connected to the sling plate (41). The mounting portion (44) has a rotatable roller (45). The first sling rope (531) and the second sling rope (551) are both connected to the frame via the roller (45).

6. The spraying device for frame production according to claim 2, characterized in that: The locking assembly (60) further comprises a movable moving member (63), wherein the moving member (63) has a limiting portion (631), and the limiting portion (631) is adapted to fit a gap between two teeth on the first rotating member (52) to limit the first rotating member (52) and the second rotating member (54).

7. The spraying device for frame production according to claim 6, characterized in that: The locking assembly (60) further comprises a third support member (134) fixed on the fixed frame (11), the third support member (134) having an unlocking portion (1341), and the locking assembly (60) further comprises a contact portion (64) fixed on the movable member (63), the contact portion (64) having a protrusion (641), the protrusion (641) being matched with the unlocking portion (1341), and the unlocking portion (1341) being arranged in an inclined manner, and being used for releasing the limit of the first rotating member (52) and the second rotating member (54).

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