A paint spraying machine for the production of L-shaped steel

Abstract

A paint spraying machine for the production of L-shaped steel. The present invention relates to the technical field of steel spraying devices; the spraying mechanism is fixedly arranged on the top plate; the fixing plate is fixedly arranged on the top wall of the workbench and is located on the left side of the moving groove; the first motor is fixedly arranged on the rear side wall of the fixing plate, and after its output end passes through the fixing plate, a first rotating shaft is fixedly arranged, and a turntable is sleeved and fixed on the first rotating shaft; the second connecting plate is fixedly arranged on the right side of the circumferential wall of the turntable; the first fixing shaft is fixedly arranged on the front side wall of the second connecting plate; the connecting disk is movably sleeved on the first fixing shaft, and both the connecting disk and the first fixing shaft are located on the front side of the first rotating shaft; the first connecting plate is fixedly arranged on the circumferential wall of the connecting disk; it is convenient to carry out paint spraying at a uniform speed, ensure uniform spraying, and save labor at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of steel spraying devices, and particularly relates to a painting machine for the production of L-shaped steel. Background Art

[0002] A painting machine is actually a spraying machine. Its working principle is to disperse the paint into a mist and spray it on the surface of the object to be painted. Existing painting machines have the advantages of high painting efficiency and long service life of the coating. However, due to their simple structure, in most cases, spraying is directly carried out manually by pushing the spraying machine or holding the spray gun. It is difficult to uniformly control the spraying speed, which easily causes uneven spraying. Moreover, after a long spraying time, it is easy to cause soreness in the arm. Therefore, there is an urgent need for a painting machine for the production of L-shaped steel. Summary of the Invention

[0003] The purpose of the present invention is to provide a reasonably designed painting machine for the production of L-shaped steel to effectively solve the defects existing in the above-mentioned prior art.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions: It includes a base, a first support plate, a workbench, a moving plate, a second support plate, a top plate, a material storage tank, and a protective plate; first support plates are fixedly arranged at the four corners of the top wall of the base, the top walls of the first support plates are fixedly arranged with the workbench, a moving groove is opened between the top wall and the front side wall of the workbench, a moving plate is movably arranged in the moving groove, and a placement groove is opened on the top wall of the moving plate; a second support plate is fixedly arranged on the left top wall of the moving plate, a top plate is fixedly arranged on the top wall of the second support plate, and a material storage tank is fixedly arranged on the top wall of the top plate; an electric telescopic rod is fixedly arranged on the top wall of the base, a support plate is fixedly arranged at the top end of the electric telescopic rod, the support plate movably passes through the workbench, and an L-shaped plate is arranged on the support plate; a protective plate is fixedly arranged on the top wall of the workbench, and the support plate is located in the protective plate; the electric telescopic rod is externally connected to a power supply through a wire;

[0005] It further includes:

[0006] A spraying mechanism, which is fixedly arranged on the top plate;

[0007] A fixing plate, which is fixedly arranged on the top wall of the workbench and is located on the left side of the moving groove;

[0008] A first motor, which is fixedly arranged on the rear side wall of the fixing plate, and after its output end passes through the fixing plate, a first rotating shaft is fixedly arranged, a turntable is sleeved and fixed on the first rotating shaft, and the first motor is externally connected to a power supply through a wire;

[0009] A second connecting plate, which is fixedly arranged on the right side of the circumferential wall of the turntable;

[0010] The first fixed shaft is fixedly arranged on the front side wall of the second connecting plate;

[0011] The connecting disk is movably sleeved on the first fixed shaft, and both the connecting disk and the first fixed shaft are located on the front side of the first rotating shaft;

[0012] The first connecting plate is fixedly arranged on the annular wall of the connecting disk;

[0013] The adjusting plate is movably arranged in the placing groove;

[0014] The spacing adjusting mechanism is provided in several numbers and is symmetrically arranged on the bottom wall of the placing groove from left to right. The adjusting plate is located between the spacing adjusting mechanisms;

[0015] The second fixed shaft is fixedly arranged on the front side wall of the adjusting plate, and a limiting disk is fixedly arranged at the front end of the second fixed shaft;

[0016] The sleeve is movably sleeved on the second fixed shaft, and the second fixed shaft is located behind the limiting disk. The sleeve is fixedly arranged with the first connecting plate.

[0017] Through the design of the above technical solution, first turn on the first motor, control the rotation of the first rotating shaft and the turntable through the first motor, control the rotation of the connecting disk and the first fixed shaft through the turntable, so as to control the rotation of the first connecting plate. The first connecting plate drives the adjusting plate to move left and right, and the adjusting plate drives the moving plate and the spraying mechanism to move left and right; it is convenient to spray paint on the L-shaped plate evenly and ensure uniformity.

[0018] As a further improvement of the present invention, a scale plate is fixedly arranged on the front side wall of the protective plate, and the scale plate is located behind the adjusting plate; it is convenient to adjust the spacing.

[0019] As a further improvement of the present invention, the spraying mechanism includes:

[0020] The suction pump is fixedly arranged on the rear top wall of the storage tank, and a liquid inlet pipe is penetrated on its input end. The liquid inlet pipe extends into the storage tank. A liquid outlet pipe is penetrated on the output end of the suction pump. After the liquid outlet pipe passes through the top plate, it is fixedly arranged on the bottom wall of the top plate; the suction pump is externally connected to a power supply through a wire;

[0021] The nozzles are provided in several numbers and are equally spaced and penetrated on the lower side of the peripheral wall of the liquid outlet pipe; it is convenient to spray paint evenly.

[0022] As a further improvement of the present invention, a heating rod is fixedly arranged on the inner bottom wall of the storage tank, and the heating rod is externally connected to a power supply through a wire; it is convenient to improve the adhesion of the coating.

[0023] As a further improvement of the present invention, the interval adjusting mechanism includes:

[0024] Threaded holes, several of which are provided on the top wall of the moving plate;

[0025] A screw rod, which is screwed with the threaded holes on the outside;

[0026] A limit block, which is fixedly arranged at the top end of the screw rod;

[0027] A first stop block, which is screwed with the screw rod, and the first stop block is located below the limit block; it is convenient to control the spraying interval time and improve the practicability.

[0028] As a further improvement of the present invention, sponge pads are fixedly arranged on the inner side walls of the first stop blocks, which play a buffering role to prevent bruising; hand screws are fixedly arranged on the top walls of the limit blocks; it is convenient for rotary adjustment and saves manpower.

[0029] As a further improvement of the present invention, a second motor is fixedly arranged on the bottom wall of the workbench, and its output end passes through the workbench and is fixedly provided with a second rotating shaft. A gear is sleeved and fixed on the second rotating shaft; a guide plate is fixedly arranged on the top wall of the workbench, and a second stop block is sleeved and fixed at the top end of the guide plate. A rack is movably sleeved on the guide plate, and the rack is located below the second stop block; a shielding plate is fixedly arranged on the left side wall of the rack, and a collection groove is opened on the top wall of the shielding plate. The shielding plate is intermittently in contact with the right side wall of the L-shaped plate. The second motor is externally connected to a power source through a wire.

[0030] Through the above technical scheme design, first turn on the second motor, control the rotation of the second rotating shaft and the gear through the second motor, control the left and right movement of the rack through the gear, and drive the shielding plate to move left and right by the rack; it is convenient to limit the L-shaped plate, increase the stability, and prevent mis-spraying on the side of the L-shaped plate during painting.

[0031] As a further improvement of the present invention, a third motor is fixedly arranged on the front side wall of the second support plate, and its output end passes through the second support plate and is fixedly provided with a third rotating shaft. A fan blade is sleeved and fixed on the third rotating shaft. The fan blade is located above the L-shaped plate. The third motor is externally connected to a power source through a wire; it accelerates the cooling and forming of the coating.

[0032] Compared with the prior art, the beneficial effect of the present invention is that the paint spraying machine for L-shaped steel production of the present invention is convenient for spraying paint at a constant speed, ensures uniform spraying, and saves manpower at the same time. Description of the Drawings

[0033] Figure 1 It is a structural schematic diagram of the present invention.

[0034] Figure 2 is Figure 1 the front view of

[0035] Figure 3 is Figure 1 the left view of

[0036] Figure 4 is Figure 1 the top view of

[0037] Figure 5 is Figure 2 the sectional view taken along line A-A in

[0038] Figure 6 is Figure 4 the sectional view taken along line B-B in

[0039] Figure 7 is Figure 4 the sectional view taken along line C-C in

[0040] Figure 8 is Figure 1 the enlarged view of part D in

[0041] Figure 9 is Figure 5 the enlarged view of part E in

[0042] Figure 10 is Figure 7 the enlarged view of part F in

[0043] Explanation of reference numerals:

[0044] Spraying mechanism 1, suction pump 1-1, liquid outlet pipe 1-2, nozzle 1-3, liquid inlet pipe 1-4, interval adjusting mechanism 2, limit block 2-1, first stop block 2-2, threaded hole 2-3, screw rod 2-4, base 3, first support plate 4, workbench 5, electric telescopic rod 6, moving groove 7, scale plate 8, moving plate 9, placement groove 10, first connecting plate 11, connecting disk 12, first fixed shaft 13, second connecting plate 14, first rotating shaft 15, turntable 16, fixed plate 17, first motor 18, second support plate 19, top plate 20, storage tank 21, shielding plate 22, collection tank 23, guide plate 24, second stop block 25, rack 26, second rotating shaft 27, gear 28, second motor 29, L-shaped plate 30, support plate 31, protection plate 32, heating rod 33, adjusting plate 34, second fixed shaft 35, sleeve 36, limit disk 37, hand screw 38, sponge pad 39, third motor 40, third rotating shaft 41, fan blade 42. Detailed implementation manners

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. Embodiment 1:

[0046] As shown in Figures 1-10 This specific embodiment includes a base 3, a first support plate 4, a workbench 5, a moving plate 9, a second support plate 19, a top plate 20, a storage tank 21 and a protective plate 32. At the four corners of the top wall of the base 3, first support plates 4 are welded. The top walls of the first support plates 4 are welded to the workbench 5. A moving groove 7 is formed between the top wall and the front side wall of the workbench 5. A moving plate 9 is movably arranged in the moving groove 7, and a placing groove 10 is formed in the top wall of the moving plate 9. A second support plate 19 is welded to the left top wall of the moving plate 9. A top plate 20 is welded to the top wall of the second support plate 19. A storage tank 21 is welded to the top wall of the top plate 20. An electric telescopic rod 6 is fixed to the top wall of the base 3 by bolts. The top end of the electric telescopic rod 6 is fixed to a support plate 31 by bolts. The support plate 31 movably passes through the workbench 5. An L-shaped plate 30 is arranged on the support plate 31. A protective plate 32 is welded to the top wall of the workbench 5, and the support plate 31 is located in the protective plate 32. A scale plate 8 is adhesively fixed to the front side wall of the protective plate 32, and the scale plate 8 is located behind the adjusting plate 34, which is convenient for adjusting the distance. The electric telescopic rod 6 is externally connected to a power supply through a wire.

[0047] It further includes:

[0048] A spraying mechanism 1, and the spraying mechanism 1 is fixedly arranged on the top plate 20;

[0049] The spraying mechanism 1 includes:

[0050] A suction pump 1-1, and the suction pump 1-1 is fixed to the rear top wall of the storage tank 21 by bolts. An inlet pipe 1-4 is penetrated through the input end thereof, and the inlet pipe 1-4 extends into the storage tank 21. An outlet pipe 1-2 is penetrated through the output end of the suction pump 1-1. After the outlet pipe 1-2 passes through the top plate 20, it is fixed to the bottom wall of the top plate 20 by a bracket. The suction pump 1-1 is externally connected to a power supply through a wire;

[0051] Nozzles 1-3, and the nozzles 1-3 are several and are equidistantly penetrated through the lower side of the peripheral wall of the outlet pipe 1-2;

[0052] A heating rod 33 is fixed to the inner bottom wall of the storage tank 21 by bolts. The heating rod 33 is externally connected to a power supply through a wire; it is convenient for heating and improves the adhesion of the coating;

[0053] Fixing plate 17, the fixing plate 17 is welded to the top wall of the workbench 5 and is located on the left side of the moving groove 7;

[0054] First motor 18, the first motor 18 is fixed to the rear side wall of the fixing plate 17 by bolts. After its output end passes through the fixing plate 17, a first rotating shaft 15 is fixedly arranged. A turntable 16 is sleeved and fixed on the first rotating shaft 15. The first motor 18 is externally connected to a power source through a wire;

[0055] Second connecting plate 14, the second connecting plate 14 is welded to the right side of the annular wall of the turntable 16;

[0056] First fixed shaft 13, the first fixed shaft 13 is welded to the front side wall of the second connecting plate 14;

[0057] Connecting disc 12, the connecting disc 12 is movably sleeved on the first fixed shaft 13 through a bearing. Both the connecting disc 12 and the first fixed shaft 13 are located in front of the first rotating shaft 15;

[0058] First connecting plate 11, the first connecting plate 11 is welded to the annular wall of the connecting disc 12;

[0059] Adjusting plate 34, the adjusting plate 34 is movably arranged in the placing groove 10;

[0060] Interval adjusting mechanism 2, there are two interval adjusting mechanisms 2, and they are symmetrically arranged on the bottom wall of the placing groove 10 from left to right. The adjusting plate 34 is located between the interval adjusting mechanisms 2;

[0061] The interval adjusting mechanism 2 includes:

[0062] Threaded holes 2-3, there are six threaded holes 2-3, and they are all opened on the top wall of the moving plate 9;

[0063] Screw rod 2-4, the screw rod 2-4 is threadedly connected to the threaded hole 2-3 on the outside;

[0064] Limit block 2-1, the limit block 2-1 is welded to the top end of the screw rod 2-4. A hand screw 38 is welded to the top wall of the limit block 2-1, which is convenient for rotary adjustment and saves manpower;

[0065] First stop block 2-2, the first stop block 2-2 is threadedly connected to the screw rod 2-4. The first stop block 2-2 is located below the limit block 2-1; a sponge pad 39 is adhesively fixed to the inner side wall of the first stop block 2-2, which plays a buffering role and prevents bruising;

[0066] Second fixed shaft 35, the second fixed shaft 35 is welded to the front side wall of the adjusting plate 34, and a limit disc 37 is welded to the front end of the second fixed shaft 35;

[0067] The sleeve 36 is movably sleeved on the second fixed shaft 35, and the second fixed shaft 35 is located at the rear side of the limit disc 37. The sleeve 36 is fixedly arranged with the first connecting plate 11; it is convenient to spray paint at a uniform speed, ensure uniform spraying, and save manpower at the same time. Embodiment 2:

[0068] On the basis of Embodiment 1, in this embodiment, a second motor 29 is fixedly installed on the bottom wall of the above-mentioned workbench 5 by bolts. After its output end passes through the workbench 5, a second rotating shaft 27 is fixedly installed through a coupling. A gear 28 is fixedly sleeved on the second rotating shaft 27; a guide plate 24 is welded on the top wall of the workbench 5. The top end of the guide plate 24 is fixedly sleeved with a second stopper 25. A rack 26 is movably sleeved on the guide plate 24, and the rack 26 is located below the second stopper 25; a shielding plate 22 is welded on the left side wall of the rack 26. A collection groove 23 is formed on the top wall of the shielding plate 22. The shielding plate 22 is intermittently in contact with the right side wall of the L-shaped plate 30. The second motor 29 is externally connected to a power source through a wire; it is convenient to limit the L-shaped plate 30, increase stability, and prevent accidental spraying on the side surface of the L-shaped plate 30 during spraying. Embodiment 3:

[0069] On the basis of Embodiment 1, in this embodiment, a third motor 40 is fixedly installed on the front side wall of the above-mentioned second support plate 19. After its output end passes through the second support plate 19, a third rotating shaft 41 is fixedly installed through a coupling. A fan blade 42 is fixedly sleeved on the third rotating shaft 41. The fan blade 42 is located above the L-shaped plate 30. The third motor 40 is externally connected to a power source through a wire, which is convenient to accelerate the cooling and forming of the coating.

[0070] When using the present invention, first fix the L-shaped plate 30, place the L-shaped plate 30 at the lower left corner of the support plate 31, turn on the electric telescopic rod 6, and the electric telescopic rod 6 drives the support plate 31 and the L-shaped plate 30 to move upward until the height of the L-shaped plate 30 is aligned with that of the protection plate 32; then turn on the second motor 29, and the second motor 29 drives the second rotating shaft 27 and the gear 28 to rotate clockwise. The gear 28 drives the rack 26 to move leftward along the guide plate 24. The rack 26 drives the shielding plate 22 to move to the right side of the L-shaped plate 30 to fix the L-shaped plate 30 and prevent accidental spraying on the side surface of the L-shaped plate 30 at the same time;

[0071] For spraying, first turn on the heating rod 33, and the heating rod 33 heats the paint to improve the adhesion of the coating. Then turn on the suction pump 1-1. The suction pump 1-1 sucks the paint through the liquid inlet pipe 1-4 and sprays it out through the nozzle 1-3 on the liquid outlet pipe 1-2 to realize the spraying of the L-shaped plate 30;

[0072] Turn on the first motor 18. The first motor 18 drives the first rotating shaft 15 and the turntable 16 to rotate clockwise. The turntable 16 drives the second connecting plate 14 and the first fixed shaft 13 to rotate. The first fixed shaft 13 drives the connecting plate 12 to rotate around the first rotating shaft 15. At the same time, the connecting plate 12 rotates around the first fixed shaft 13. The connecting plate 12 drives the first connecting plate 11 to move left and right. The first connecting plate 11 drives the sleeve 36 and the second fixed shaft 35 to move left and right. The second fixed shaft 35 drives the adjusting plate 34 to move left and right along the placement groove 10; when the adjusting plate 34 moves left and contacts the left first stopper 2-2, the adjusting plate 34 drives the left first stopper 2-2, the screw 2-4 and the moving plate 9 to move left. The moving plate 9 drives the second support plate 19, the top plate 20 and the spraying mechanism 1 to move left. When the spraying mechanism 1 moves above the L-shaped plate 30, the second connecting plate 14 rotates to the leftmost side. When rotating continuously, the second connecting plate 14 will push the first connecting plate 11 and the adjusting plate 34 to move right. At this time, the adjusting plate 34 separates from the left first stopper 2-2. After the adjusting plate 34 moves the interval (i.e., the interval distance) between the left and right first stoppers 2-2, it contacts the right first stopper 2-2. During the moving process, the spraying mechanism 1 sprays the L-shaped plate 30 all the time (i.e., the spraying interval time); after that, the adjusting plate 34 drives the right first stopper 2-2, the screw 2-4 and the moving plate 9 to move right. The spraying mechanism 1 moves away from the L-shaped plate 30. Repeat the above steps to realize automatic painting of the L-shaped plate 30 and ensure uniform painting;

[0073] For the adjustment of the interval time, rotate the hand screw 38. The hand screw 38 drives the limit block 2-1 and the screw 2-4 to rotate, so that the screw 2-4 separates from the outer threaded hole 2-3, moves the first stopper 2-2 to the right and screws the screw 2-4 into the middle threaded hole 2-3, thereby shortening the interval distance between the first stoppers 2-2, thereby shortening the time taken for the adjusting plate 34 to move the interval distance, and thereby shortening the time for the spraying mechanism 1 to stay above the L-shaped plate 30 for spraying. By adjusting the interval time, different production needs can be met and the practicability can be improved.

[0074] After adopting the above structure, the beneficial effects of this specific embodiment are as follows:

[0075] 1. Through the settings of the spraying mechanism 1, the interval adjustment mechanism 2, the moving plate 9, the first connecting plate 11, the connecting plate 12, the first fixed shaft 13, the second connecting plate 14, the first rotating shaft 15, the turntable 16, the fixed plate 17, the first motor 18, the adjusting plate 34, the second fixed shaft 35 and the sleeve 36, it is convenient to carry out painting at a uniform speed, ensure uniform spraying, and save manpower at the same time;

[0076] 2. Through the settings of the spraying mechanism 1 and the heating rod 33, it is convenient to increase the temperature of the paint, reduce the viscosity, and improve the adhesion of the coating; through the settings of the baffle plate 22, the guide plate 24, the second stop block 25, the rack 26, the second rotating shaft 27, the gear 28, the second motor 29, and the protection plate 32, it is convenient to limit the L-shaped plate 30 and prevent accidental spraying on the side of the L-shaped plate 30 during painting;

[0077] 3. Through the settings of the third motor 40, the third rotating shaft 41, and the fan blade 42, it is convenient to accelerate the cooling and forming of the coating; through the setting of the hand screw 38, it is convenient to perform rotational adjustment and save manpower;

[0078] 4. Through the setting of the sponge pad 39, it plays a buffering role and prevents damage between the adjusting plate 34 and the first stop block 2-2; through the setting of the scale plate 8, it is convenient to adjust the pause interval of the adjusting plate 34 and improve the practicality.

[0079] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A painting machine for the production of L-shaped steel, which comprises a base (3), a first support plate (4), a workbench (5), a moving plate (9), a second support plate (19), a top plate (20), a material storage tank (21) and a protective plate (32); first support plates (4) are fixedly arranged at the four corners of the top wall of the base (3), the top walls of the first support plates (4) are fixedly arranged with the workbench (5), a moving groove (7) is formed between the top wall and the front side wall of the workbench (5), a moving plate (9) is movably arranged in the moving groove (7), and a placing groove (10) is formed in the top wall of the moving plate (9); a second support plate (19) is fixedly arranged on the left top wall of the moving plate (9), a top plate (20) is fixedly arranged on the top wall of the second support plate (19), and a material storage tank (21) is fixedly arranged on the top wall of the top plate (20); an electric telescopic rod (6) is fixedly arranged on the top wall of the base (3), a supporting plate (31) is fixedly arranged at the top end of the electric telescopic rod (6), the supporting plate (31) movably penetrates through the workbench (5), and an L-shaped plate (30) is arranged on the supporting plate (31); a protective plate (32) is fixedly arranged on the top wall of the workbench (5), and the supporting plate (31) is located in the protective plate (32); the electric telescopic rod (6) is externally connected to a power supply through a wire; It is characterized in that It further comprises: A spraying mechanism (1), which is fixedly arranged on the top plate (20); A fixing plate (17), which is fixedly arranged on the top wall of the workbench (5) and is located on the left side of the moving groove (7); A first motor (18), which is fixedly arranged on the rear side wall of the fixing plate (17), and after its output end penetrates through the fixing plate (17), a first rotating shaft (15) is fixedly arranged, a turntable (16) is sleeved and fixed on the first rotating shaft (15), and the first motor (18) is externally connected to a power supply through a wire; A second connecting plate (14), which is fixedly arranged on the right side of the annular wall of the turntable (16); A first fixed shaft (13), which is fixedly arranged on the front side wall of the second connecting plate (14); A connecting disc (12), which is movably sleeved on the first fixed shaft (13), and the connecting disc (12) and the first fixed shaft (13) are both located in front of the first rotating shaft (15); A first connecting plate (11), which is fixedly arranged on the annular wall of the connecting disc (12); An adjusting plate (34), which is movably arranged in the placing groove (10); An interval adjusting mechanism (2), there are several of the interval adjusting mechanisms (2), and they are symmetrically arranged on the bottom wall of the placing groove (10) left and right, and the adjusting plate (34) is located between the interval adjusting mechanisms (2); A second fixed shaft (35), which is fixedly arranged on the front side wall of the adjusting plate (34), and a limiting disc (37) is fixedly arranged at the front end of the second fixed shaft (35); A sleeve (36) is movably sleeved on a second fixed shaft (35), and the second fixed shaft (35) is located at the rear side of a limit disc (37). The sleeve (36) is fixedly arranged with a first connecting plate (11). The spraying mechanism (1) includes: A suction pump (1-1) is fixedly arranged on the rear top wall of a storage tank (21). A liquid inlet pipe (1-4) is penetratively arranged on its input end, and the liquid inlet pipe (1-4) extends into the storage tank (21). A liquid outlet pipe (1-2) is penetratively arranged on the output end of the suction pump (1-1). After passing through a top plate (20), the liquid outlet pipe (1-2) is fixedly arranged on the bottom wall of the top plate (20). The suction pump (1-1) is externally connected to a power supply through a wire. Nozzles (1-3), there are several of the nozzles (1-3), and they are equidistantly penetratively arranged on the lower side of the peripheral wall of the liquid outlet pipe (1-2). A heating rod (33) is fixedly arranged on the inner bottom wall of the storage tank (21), and the heating rod (33) is externally connected to a power supply through a wire. The interval adjusting mechanism (2) includes: Threaded holes (2-3), there are several of the threaded holes (2-3), and they are all formed on the top wall of a moving plate (9). Screws (2-4), the screws (2-4) are threadedly connected with the outer threaded holes (2-3). Limit blocks (2-1), the limit blocks (2-1) are fixedly arranged at the tops of the screws (2-4). First stop blocks (2-2), the first stop blocks (2-2) are threadedly connected with the screws (2-4), and the first stop blocks (2-2) are located below the limit blocks (2-1). Sponge pads (39) are fixedly arranged on the inner side walls of the first stop blocks (2-2). Hand screws (38) are fixedly arranged on the top walls of the limit blocks (2-1).

2. The paint spraying machine for L-shaped steel production according to claim 1, wherein: A scale plate (8) is fixedly arranged on the front side wall of the protection plate (32), and the scale plate (8) is located at the rear side of an adjusting plate (34).

3. A paint spraying machine for L-shaped steel production according to claim 1, characterized in that: A second motor (29) is fixedly arranged on the bottom wall of a workbench (5). After its output end passes through the workbench (5), a second rotating shaft (27) is fixedly arranged. A gear (28) is sleeved and fixed on the second rotating shaft (27). A guide plate (24) is fixedly arranged on the top wall of the workbench (5). A second stop block (25) is sleeved and fixed at the top of the guide plate (24). A rack (26) is movably sleeved on the guide plate (24), and the rack (26) is located below the second stop block (25). A shielding plate (22) is fixedly arranged on the left side wall of the rack (26). A collection groove (23) is formed on the top wall of the shielding plate (22). The shielding plate (22) intermittently contacts the right side wall of an L-shaped plate (30). The second motor (29) is externally connected to a power supply through a wire.

4. A painting machine for the production of L-shaped steel according to claim 1, characterized in that: A third motor (40) is fixedly arranged on the front side wall of a second support plate (19). After its output end passes through the second support plate (19), a third rotating shaft (41) is fixedly arranged. A fan blade (42) is sleeved and fixed on the third rotating shaft (41). The fan blade (42) is located above the L-shaped plate (30). The third motor (40) is externally connected to a power supply through a wire.

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