An automatic painting workshop feeding and spraying position adjusting device for steel structures

Abstract

The present invention discloses a feeding and spraying position adjusting device for an automatic steel structure painting workshop, which relates to the technical field of steel structure processing equipment. The present invention includes a driving gear box and a signal transmitter fixedly installed on both sides inside the painting box body. A rotating adjustment roller is fixedly installed at the output end of the driving gear box. A first adjustment motor is fixedly installed on the outer side surface of the painting box body, and the output end of the first adjustment motor is fixedly connected to the input end of the driving gear box. Two sliding blocks are slidably installed on the painting box body. A rotating clamping motor is installed on the sliding block, and a clamping roller is rotatably installed on the sliding block. The clamping roller is fixedly connected to the output end of the rotating clamping motor. A clamping rotating ring is rotatably installed on the clamping roller. A plurality of second pushing arc blocks are fixedly installed on the inner wall surface of the clamping rotating ring. A first pushing arc block matching the second pushing arc block is fixedly installed on the clamping roller. A signal reflection sticker is fixedly installed on the outer wall surface of the clamping rotating ring, which can enable the steel structure to reach the target spraying area for precise spraying and improve the painting effect of the product.

Description

Technical Field

[0001] The present invention belongs to the technical field of steel structure processing equipment. Specifically, it relates to a device for adjusting the feeding and spraying positions in an automatic painting workshop for steel structures. Background Technique

[0002] A steel structure is a structure composed of steel materials and is one of the main types of building structures. The structure is mainly composed of components such as steel beams, steel columns, and steel trusses made of sections and steel plates, and rust removal and anti-rust processes such as silanization, pure manganese phosphating, water washing and drying, and galvanizing are adopted. Welds, bolts, or rivets are usually used to connect between components or parts. Because of its light self-weight and simple construction, it is widely used in large factories, stadiums, super high-rise buildings and other fields.

[0003] In the existing patent application No. CN202111560311.X, a spraying device and a spraying method for decorative coatings for steel structures include an outer spraying plate and an inner spraying plate. An outer spray head is installed inside the outer spraying plate, and an inner spray head is installed outside the inner spraying plate. Side chutes are provided on the side surfaces of the outer spraying plate and the inner spraying plate. A first slider is connected to one side of the outer spray head and the inner spray head, and the first slider is slidably matched with the side chute. A connecting rod is installed at the upper ends of the outer spraying plate and the inner spraying plate, and the connecting rod is a telescopic structure. Upper chutes are provided on the upper surfaces of the outer spraying plate and the inner spraying plate. One end of the connecting rod is connected to a second slider, and the second slider is slidably matched with the upper chute; the spraying device of the present invention adopts the method of synchronously spraying the outer surface and the inner surface, and the steel structure presents a continuous and integrated spraying effect, with a high degree of completion of spraying operations and strong adaptability.

[0004] However, the above-mentioned patent synchronously sprays the inside and outside of the steel structure. However, before the steel structure is spray-processed, the steel structure may not be accurately parked in the target area to be sprayed. At this time, spraying the steel structure may cause spraying errors. In order to avoid spraying errors, it is also necessary to accurately adjust and position the steel structure so that the final parking position of the steel structure completely overlaps with the target area to be sprayed. At present, the adjustment of the parking position of the steel structure mostly relies on manual adjustment, and it is easy to have errors in manual visual observation, making it difficult to accurately adjust the parking position of the steel structure, ultimately affecting the spraying effect and reducing the painting quality.

[0005] Therefore, it is necessary to improve the deficiencies and defects of the existing technology and provide a device for adjusting the feeding and spraying positions in an automatic painting workshop for steel structures. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the existing technology and provide a device for adjusting the feeding and spraying positions in an automatic painting workshop for steel structures that can overcome the above problems or at least partially solve the above problems.

[0007] To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: an automatic painting workshop feeding and spraying position adjusting device for steel structures, including a painting box body. A feeding conveyor belt is installed at the front end of the painting box body, and a discharging conveyor belt is installed at the rear end of the painting box body. A paint gun and a dryer are fixedly installed inside the painting box body. Driving tooth boxes and signal transmitters are fixedly installed on both sides inside the painting box body. A rotating adjustment roller is fixedly installed at the output end of the driving tooth box. A first adjustment motor is fixedly installed on the outer side surface of the painting box body, and the output end of the first adjustment motor is fixedly connected to the input end of the driving tooth box. Two sliding blocks are slidably installed on the painting box body. A rotating clamping motor is fixedly installed on the sliding block. A clamping roller is rotatably installed on the sliding block, and the clamping roller is fixedly connected to the output end of the rotating clamping motor. A plurality of clamping rotating rings are rotatably installed on the clamping roller. A plurality of second pushing arc blocks are fixedly installed on the inner wall surface of the clamping rotating ring. A first pushing arc block matching the second pushing arc block is fixedly installed on the clamping roller. The second pushing arc block abuts against the first pushing arc block. An irregular clamping block and a signal reflection sticker matching the signal transmitter are fixedly installed on the outer wall surface of the clamping rotating ring.

[0008] To clamp and fix the steel structure, preferably, the irregular clamping block is formed by staggered connection of two semi-elliptical rings, and there are two planar protrusions on the irregular clamping block.

[0009] To avoid hard collision with the steel structure, further, an elastic rubber block is fixedly installed on the planar protrusion, and a cavity is provided inside the elastic rubber block.

[0010] To prevent the clamping rotating ring from rotating and shifting, preferably, a plurality of limiting rings are fixedly installed on the clamping roller, and the limiting rings abut against both sides of the second pushing arc block.

[0011] To control the rotation of the rotating adjustment roller, preferably, a plurality of first gears and second gears are rotatably installed inside the driving tooth box. The first gears and the second gears are cross-engaged. The output end of the first adjustment motor is connected to one of the first gears, and the rotating adjustment roller is fixedly connected to the first gear.

[0012] To control the forward and backward movement of the steel structure, further, the rotating adjustment rollers on the two driving tooth boxes rotate in opposite directions, and the rotating adjustment rollers on the two driving tooth boxes are cross-distributed.

[0013] To control the movement of the sliding block, preferably, a second adjustment motor is fixedly installed at the side end of the painting box body. An adjustment threaded rod is rotatably installed inside the painting box body, and the adjustment threaded rod is fixedly connected to the output end of the second adjustment motor. The two sliding blocks are threadedly connected to the adjustment threaded rod.

[0014] In order to make the two sliding blocks slide synchronously, further, two threaded regions with opposite thread directions are provided on the adjusting threaded rod, and the two sliding blocks are respectively threadedly connected to the two threaded regions.

[0015] In order to perform preliminary positioning when the steel structure enters the painting box body, preferably, two limiting plate fixing frames are fixedly installed on the outer wall surface of the painting box body, an auxiliary limiting plate is installed on the limiting plate fixing frame, and the auxiliary limiting plate is located on both sides above the material conveying conveyor belt.

[0016] In order to control the distance between the two auxiliary limiting plates, further, a plurality of adjusting bolts are threadedly installed on the limiting plate fixing frame, and the adjusting bolts are rotatably connected to the auxiliary limiting plate.

[0017] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: The automatic painting workshop feeding and spraying position adjusting device for steel structures of the present invention rotates the clamping roller and the clamping rotating ring, and the special-shaped clamping block on the clamping rotating ring clamps the steel structure. The clamping rotating ring that clamps the steel structure rotates relative to the clamping roller and is stationary relative to the steel structure. At this time, the signal reflected or not reflected by the signal reflection sticker on the clamping rotating ring is constant, while the clamping rotating ring and the special-shaped clamping block that do not contact the steel structure will rotate uniformly with the clamping roller. The signal reflection sticker on this clamping rotating ring will reflect signals periodically, so as to judge the current position of the steel structure, whether it needs to move, and if it needs to move, the unit length to be moved. Finally, the steel structure is controlled to move by rotating the adjusting roller, so that the steel structure reaches the target spraying area for precise spraying, improving the painting effect of the product.

[0018] The following further describes in detail the specific implementation manners of the present invention with reference to the accompanying drawings. Description of the Drawings

[0019] In the drawings:

[0020] Figure 1 is the overall structural schematic diagram of the present invention;

[0021] Figure 2 is the internal structural schematic diagram of the painting box body of the present invention;

[0022] Figure 3 is the structural schematic diagram of the auxiliary limiting plate of the present invention;

[0023] Figure 4 is the structural schematic diagram of the clamping roller adjustment structure of the present invention;

[0024] Figure 5 is the present invention Figure 4 the structural schematic diagram of A in;

[0025] Figure 6 is a schematic diagram of the rotational adjustment roller drive structure of the present invention;

[0026] Figure 7 is a schematic diagram of the clamping rotating ring structure of the present invention;

[0027] Figure 8 is a schematic diagram of the cooperation structure between the clamping rotating ring and the clamping roller of the present invention;

[0028] Figure 9 is a schematic diagram of the cooperation structure between the auxiliary slider and the clamping arc block of the present invention.

[0029] In the figure: 1, paint spraying box body; 2, material conveying conveyor belt; 3, discharging conveyor belt; 4, paint spraying gun; 5, dryer; 6, drive gear box; 601, first gear; 602, second gear; 7, first adjustment motor; 8, second adjustment motor; 801, adjustment screw rod; 9, sliding block; 10, rotating clamping motor; 11, clamping roller; 111, first pushing arc block; 112, limiting ring; 12, clamping rotating ring; 121, second pushing arc block; 13, special-shaped clamping block; 14, signal reflection sticker; 15, elastic rubber block; 151, cavity; 16, auxiliary limiting plate; 17, limiting plate fixing frame; 18, adjustment bolt; 19, signal transmitter; 20, rotating adjustment roller; 21, clamping screw rod; 22, clamping motor; 23, auxiliary slider; 24, clamping arc block; 25, electric telescopic rod. Specific embodiments

[0030] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0031] Embodiment:

[0032] Refer to Figures 1-9As shown in the figure, an automatic painting workshop feeding and spraying position adjusting device for a steel structure includes a painting box body 1. A feeding conveyor belt 2 is installed at the front end of the painting box body 1, and a discharging conveyor belt 3 is installed at the rear end of the painting box body 1. A painting gun 4 and a dryer 5 are fixedly installed inside the painting box body 1. On both sides inside the painting box body 1, a driving gear box 6 and a signal transmitter 19 are fixedly installed. The output end of the driving gear box 6 is fixedly installed with a rotating adjustment roller 20. A first adjustment motor 7 is fixedly installed on the outer side surface of the painting box body 1, and the output end of the first adjustment motor 7 is fixedly connected to the input end of the driving gear box 6. Two sliding blocks 9 are slidably installed on the painting box body 1. A rotating clamping motor 10 is fixedly installed on the sliding block 9. A clamping roller 11 is rotatably installed on the sliding block 9, and the clamping roller 11 is fixedly connected to the output end of the rotating clamping motor 10. A plurality of clamping rotating rings 12 are rotatably installed on the clamping roller 11. A plurality of second pushing arc blocks 121 are fixedly installed on the inner wall surface of the clamping rotating ring 12. A first pushing arc block 111 matching the second pushing arc block 121 is fixedly installed on the clamping roller 11. The second pushing arc block 121 abuts against the first pushing arc block 111. A special-shaped clamping block 13 and a signal reflection sticker 14 matching the signal transmitter 19 are fixedly installed on the outer wall surface of the clamping rotating ring 12.

[0033] The special-shaped clamping block 13 is formed by connecting two semi-elliptical rings in a staggered manner. There are two flat protrusions on the special-shaped clamping block 13, and elastic rubber blocks 15 are fixedly installed on the flat protrusions. A cavity 151 is provided inside the elastic rubber block 15. When the clamping rotating ring 12 rotates and contacts the steel structure, the arc surface of the rotating special-shaped clamping block 13 will abut against the steel structure until the flat protrusions and the elastic rubber blocks 15 tightly abut against the steel structure, clamping and fixing the steel structure from both sides of the steel structure. The cavity 151 can increase the reverse elastic force of the elastic rubber block 15 when the elastic rubber block 15 is squeezed and compressed, thereby increasing the clamping force on the steel structure.

[0034] A plurality of limiting rings 112 are fixedly installed on the clamping roller 11. The limiting rings 112 abut against both sides of the second pushing arc block 121, restricting the second pushing arc block 121 from both sides, thereby achieving the effect of restricting the clamping rotating ring 12, so that the clamping rotating ring 12 can only rotate relative to the clamping roller 11 and cannot move relatively.

[0035] A plurality of first gears 601 and second gears 602 are rotatably installed in the drive gear box 6. The first gears 601 and the second gears 602 are meshed crosswise. The output end of the first adjustment motor 7 is connected to one of the first gears 601. The rotation adjustment roller 20 is fixedly connected to the first gear 601. The rotation adjustment rollers 20 on the two drive gear boxes 6 rotate in opposite directions, and the rotation adjustment rollers 20 on the two drive gear boxes 6 are distributed crosswise. An anti-slip rubber sleeve is installed on the rotation adjustment roller 20. When it is necessary to control the steel structure on the rotation adjustment roller 20 to move forward, the first adjustment motor 7 on one side is started to make the rotation adjustment roller 20 rotate, so that the steel structure moves forward. If it is necessary for the steel structure to move backward, the other first adjustment motor 7 is started to make the rotation adjustment roller 20 on the other side rotate in the reverse direction, so that the steel structure moves backward.

[0036] A second adjustment motor 8 is fixedly installed on the side end of the paint spraying box body 1. An adjustment screw rod 801 is rotatably installed in the paint spraying box body 1. The adjustment screw rod 801 is fixedly connected to the output end of the second adjustment motor 8. Two sliding blocks 9 are threadedly connected to the adjustment screw rod 801. Two threaded areas with opposite thread directions are provided on the adjustment screw rod 801. The two sliding blocks 9 are respectively threadedly connected to the two threaded areas. When the second adjustment motor 8 controls the adjustment screw rod 801 to rotate, the two sliding blocks 9 slide on the paint spraying box body 1 at the same speed, the same displacement and in opposite directions, so as to control the distance between the two clamping rollers 11, and according to the width of the steel structure, the distance between the two clamping rollers 11 reaches the best, improving the clamping effect on both sides of the steel structure.

[0037] Two limit plate fixing frames 17 are fixedly installed on the outer wall surface of the paint spraying box body 1. An auxiliary limit plate 16 is installed on the limit plate fixing frame 17. The auxiliary limit plate 16 is located on both sides above the material conveying conveyor belt 2. A plurality of adjusting bolts 18 are threadedly installed on the limit plate fixing frame 17. The adjusting bolts 18 are rotatably connected to the auxiliary limit plate 16. Preliminary limiting is carried out through the auxiliary limit plates 16 on both sides of the material conveying conveyor belt 2. Before the steel structure enters the paint spraying box body 1, it first moves to the middle position of the material conveying conveyor belt 2 under the restriction of the auxiliary limit plate 16, avoiding the steel structure from deviating from both sides of the material conveying conveyor belt 2 and colliding with various components inside the paint spraying box body 1. Preliminary limiting is first carried out by the auxiliary limit plate 16, and after being conveyed into the paint spraying box body 1, clamping and positioning are carried out from both sides by the clamping rollers 11 and the clamping rotating rings 12.

[0038] Clamping motors 22 are fixedly installed at the front and rear ends of the paint spraying box body 1. Clamping threaded rods 21 are rotatably installed inside the front and rear of the paint spraying box body 1. The clamping threaded rods 21 are fixedly connected to the driving ends of the clamping motors 22. Auxiliary sliders 23 are threadedly installed on the clamping threaded rods 21. The auxiliary sliders 23 are slidably connected to the paint spraying box body 1. Clamping arc blocks 24 and electric telescopic rods 25 are rotatably installed at the bottoms of the auxiliary sliders 23. The clamping arc blocks 24 are slidably connected to the electric telescopic rods 25. When the steel structure to be painted is conveyed into the paint spraying box body 1 or the painted steel structure is output from the paint spraying box body 1, the electric telescopic rod 25 contracts, causing the clamping arc block 24 to rotate upward so that the clamping arc block 24 does not obstruct the conveyance of the steel structure. After the signal transmitter 19 detects the position of the current steel structure, it not only controls the rotation of the rotation adjustment roller 20 but also starts the electric telescopic rod 25, causing the clamping arc block 24 to rotate downward. Then, the rotation of the clamping threaded rod 21 is controlled by the clamping motor 22 to control the position of the auxiliary slider 23, enabling the clamping arc block 24 to position, clamp, and fix the steel structure from the front and rear ends. The special-shaped clamping blocks 13 and the elastic rubber blocks 15 perform left and right positioning, clamping, and fixing on the steel structure, completing the adjustment and positioning of the steel structure in multiple directions and at multiple angles.

[0039] In the present invention, the steel structure to be painted is placed on the feeding conveyor belt 2. During the conveyance of the steel structure by the feeding conveyor belt 2, preliminary alignment and positioning adjustment are first performed by the auxiliary limit plates 16 on both sides, allowing the steel structure to enter from the middle part of the entrance of the paint spraying box body 1. The feeding conveyor belt 2 conveys the steel structure onto the rotation adjustment roller 20. At this time, due to the combined actions of inertia and friction, the steel structure may be exactly below the paint spraying gun 4, that is, in the area to be sprayed, or it may be in front of or behind the area to be sprayed.

[0040] Start the second adjusting motor 8 to rotate the adjusting screw rod 801, causing the two sliding blocks 9 to slide synchronously towards the middle, making the special-shaped clamping block 13 gently contact and press against the steel structure. Start the rotating clamping motor 10 to rotate the clamping roller 11. At this time, the first pushing arc block 111 on the clamping roller 11 will push the second pushing arc block 121, causing the clamping rotating ring 12 to rotate and press against the steel structure. Both the special-shaped clamping block 13 in contact with the steel structure and the special-shaped clamping block 13 not in contact with the steel structure will rotate. When the plane protrusion and the elastic rubber block 15 press against the steel structure during the rotation of the special-shaped clamping block 13 in contact with the steel structure, the special-shaped clamping block 13 and the elastic rubber block 15 clamp and fix the steel structure. The steel structure exerts a reaction force in the opposite direction on the special-shaped clamping block 13, causing the second pushing arc block 121 and the first pushing arc block 111 to deform and compress. As a result, while the special-shaped clamping block 13 clamps, the clamping rotating ring 12 rotates relative to the clamping roller 11, and the clamping rotating ring 12, the special-shaped clamping block 13, and the steel structure are relatively stationary. The special-shaped clamping block 13 that is not in contact with the steel structure will keep rotating. This special-shaped clamping block 13 and the clamping rotating ring 12 will rotate relative to the steel structure and be relatively stationary with respect to the clamping roller 11.

[0041] Number the signal reflection stickers 14 on each clamping rotating ring 12. Assume that the space width occupied by each clamping rotating ring 12 is one unit length. Start the signal transmitter 19. When the clamping rotating ring 12 and the special-shaped clamping block 13 that are relatively stationary with respect to the steel structure do not rotate, the signal transmitter 19 is an infrared transmitter, and the signal reflection sticker 14 is an infrared reflection sticker. The signal reflection sticker 14 either always reflects infrared signals or never reflects. The signal value reflected by the numbered signal reflection sticker 14 is fixed. The continuously rotating clamping rotating ring 12 will also drive the signal reflection sticker 14 to rotate at a constant speed, and the signal reflection sticker 14 will reflect infrared signals periodically. Determine whether the steel structure meets the requirements based on the number of the signal reflection sticker 14 that reflects signals periodically, so as to judge whether the steel structure needs to move forward or backward and by how many unit lengths if it needs to move.

[0042] Suppose there are ten clamping rotating rings 12 on each side, distributed crosswise, which is a total of twenty unit lengths. If the length of the steel structure is ten unit lengths and the target spraying area is within the range from the fifth to the fourteenth unit length in terms of numbering, but after the signal transmitter 19 emits infrared signals and receives the reflected signals, the signal reflection stickers 14 numbered from the seventh to the sixteenth either always reflect signals or do not reflect signals, and the other signal reflection stickers 14 reflect infrared signals evenly at a period. This indicates that the steel structure is not in the target spraying area at this time. Then, the steel structure needs to be moved backward by two unit lengths to move it to the target spraying area.

[0043] At this time, start the second adjustment motor 8 to slightly rotate the adjustment screw rod 801, so that the special-shaped clamping block 13 loosens the clamping of the steel structure. Then, start the first adjustment motor 7 according to the direction and unit length to be moved, so that the rotating adjustment roller 20 rotates, thereby moving the steel structure on the rotating adjustment roller 20 to make it reach the preset spraying area. After spraying, start the first adjustment motor 7 again to move the steel structure forward to the position directly below the dryer 5 for drying treatment, and finally output it by the discharge conveyor belt 3.

[0044] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of this patent, within the scope of the technical solution of the present invention.

Claims

1. An automatic painting position adjusting device for a steel structure painting workshop, comprising a painting box body (1), a feeding conveyor belt (2) is installed at the front end of the painting box body (1), a discharging conveyor belt (3) is installed at the rear end of the painting box body (1), a painting gun (4) and a dryer (5) are fixedly installed in the painting box body (1), and it is characterized in that: On both sides inside the paint spraying box body (1), a driving gear box (6) and a signal transmitter (19) are fixedly installed. The output end of the driving gear box (6) is fixedly installed with a rotation adjustment roller (20). A first adjustment motor (7) is fixedly installed on the outer side surface of the paint spraying box body (1). The output end of the first adjustment motor (7) is fixedly connected to the input end of the driving gear box (6). Two sliding blocks (9) are slidably installed on the paint spraying box body (1). A rotation clamping motor (10) is fixedly installed on the sliding block (9). A clamping roller (11) is rotatably installed on the sliding block (9). The clamping roller (11) is fixedly connected to the output end of the rotation clamping motor (10). A plurality of clamping rotating rings (12) are rotatably installed on the clamping roller (11). A plurality of second pushing arc blocks (121) are fixedly installed on the inner wall surface of the clamping rotating ring (12). A first pushing arc block (111) matching the second pushing arc block (121) is fixedly installed on the clamping roller (11). The second pushing arc block (121) abuts against the first pushing arc block (111). An irregular clamping block (13) and a signal reflection sticker (14) matching the signal transmitter (19) are fixedly installed on the outer wall surface of the clamping rotating ring (12).

2. The feeding and spraying position adjusting device for an automatic steel structure painting workshop according to claim 1, wherein: The irregular clamping block (13) is formed by staggered connection of two semi-elliptical rings, and there are two planar protrusions on the irregular clamping block (13).

3. The feeding and spraying position adjusting device for an automatic steel structure painting workshop according to claim 2, wherein: Elastic rubber blocks (15) are fixedly installed on the planar protrusions, and cavities (151) are arranged inside the elastic rubber blocks (15).

4. The feeding and spraying position adjusting device for an automatic steel structure painting workshop according to claim 1, wherein: A plurality of limiting rings (112) are fixedly installed on the clamping roller (11), and the limiting rings (112) abut against both sides of the second pushing arc block (121).

5. An automatic painting position adjusting device for loading materials in a steel structure automatic painting workshop according to claim 1, characterized in that: A plurality of first gears (601) and second gears (602) are rotatably installed in the driving gear box (6). The first gears (601) and the second gears (602) are cross-engaged. The output end of the first adjustment motor (7) is connected to one of the first gears (601). The rotation adjustment roller (20) is fixedly connected to the first gear (601).

6. The feeding and spraying position adjusting device for an automatic steel structure painting workshop according to claim 5, characterized in that: The rotation directions of the rotation adjustment rollers (20) on the two driving gear boxes (6) are opposite, and the rotation adjustment rollers (20) on the two driving gear boxes (6) are cross-distributed.

7. An automatic painting position adjusting device for feeding steel structures in a painting workshop, characterized in that: A second adjustment motor (8) is fixedly installed at the side end of the paint spraying box body (1). An adjustment threaded rod (801) is rotatably installed inside the paint spraying box body (1). The adjustment threaded rod (801) is fixedly connected to the output end of the second adjustment motor (8). The two sliding blocks (9) are threadedly connected to the adjustment threaded rod (801).

8. An automatic painting workshop feeding and spraying position adjusting device for steel structures according to claim 7, characterized in that: Two threaded regions with opposite thread directions are arranged on the adjustment threaded rod (801), and the two sliding blocks (9) are respectively threadedly connected to the two threaded regions.

9. The feeding and spraying position adjusting device for an automatic steel structure painting workshop according to claim 1, wherein: On the outer wall surface of the spray painting box body (1), two limit plate fixing frames (17) are fixedly installed, and an auxiliary limit plate (16) is installed on the limit plate fixing frame (17). The auxiliary limit plate (16) is located on both sides above the material conveying conveyor belt (2).

10. The position adjusting device for feeding and spraying in an automatic steel structure painting workshop according to claim 9, wherein: A plurality of adjusting bolts (18) are threadedly installed on the limit plate fixing frame (17), and the adjusting bolts (18) are rotatably connected to the auxiliary limit plate (16).

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