A surface spraying device for steel plate processing

Abstract

The present application relates to steel plate surface treatment and thermal spraying technical field, disclose a kind of surface spraying device for steel plate processing, including spray gun main body, the gas input end of spray gun main body is communicated with second input pipe, the heat source input end of spray gun main body is communicated with first input pipe, the end of spray gun main body is fixedly installed with spray pipe, spray pipe, second input pipe and first input pipe are all communicated with the heating cavity of spray gun main body, compared with single rigid pipeline or pure flexible hose, the combined structure retains flexible feature, can reciprocate linear motion with spray gun, also avoid the swing out of control problem caused by single hose too long by the design of segmented link, with positioning rod cooperation can also effectively avoid spray gun movement wire feeding channel deviation, bending or dead bend, disperse metal wire bending stress, guarantee wire feeding continuity.

Description

Technical Field

[0001] This invention belongs to the field of steel plate surface treatment and thermal spraying technology, and specifically relates to a surface spraying device for steel plate processing. Background Technology

[0002] In the processing of steel plates and cylindrical workpieces, surface spraying is a key process to improve their corrosion resistance and wear resistance, and it is widely used in chemical equipment, storage tanks, engineering machinery and other fields.

[0003] Existing spraying equipment has a wire feeding channel that is mostly a single rigid pipe or flexible hose, which has poor wire feeding stability. When the spray gun moves back and forth, it is easy to bend or deviate, resulting in wire jamming, wire breakage, or fluctuation in wire feeding speed, which in turn causes uneven coating thickness and insufficient adhesion. However, when using flexible hoses to transport metal wires, the hoses have limited adaptability and are difficult to be compatible with metal wires of different diameters. When changing the wire specifications, the wire feeding parts need to be disassembled and replaced, resulting in low debugging efficiency. Furthermore, the spraying device requires a separate guide base to be designed for workpieces of different lengths, resulting in high equipment investment costs and poor positioning accuracy after splicing, which can easily lead to deviation of the spray gun's movement trajectory. Summary of the Invention

[0004] This invention provides a surface coating device for steel plate processing, which solves the technical problems of unstable wire feeding and poor adaptability in related technologies.

[0005] This invention provides a surface coating device for steel plate processing, including a spray gun body, a second input pipe connected to the gas input end of the spray gun body, a first input pipe connected to the heat source input end of the spray gun body, a spray pipe fixedly installed at the end of the spray gun body, the spray pipe, the second input pipe and the first input pipe all being connected to the heating chamber of the spray gun body, a drive mechanism fixedly connected to the end of the spray gun body, a conveying mechanism connected to the material input end of the spray gun body, and a guide mechanism slidably connected to the bottom of the drive mechanism; The conveying mechanism includes a wire feeder body, a positioning rod inserted into one side of the wire feeder body, multiple sets of hollow hoses, and a connecting block fixedly installed at the end of one set of hollow hoses. The wire feeder body has a cavity inside. One end of the positioning rod is integrally formed with a sleeve. A protective tube is threaded to the inner side of the sleeve end. One end of the protective tube is threaded to the material input end of the spray gun body. The hollow hose is aligned with the wire output end of the wire feeder body, and the wire input end of the hollow hose is aligned with the wire inlet end of the protective tube. The positioning rod is located on one side of the hollow hose. Multiple sets of hollow hoses are spaced apart and connected end to end to form a wire feeding channel for conveying metal wire.

[0006] In a preferred embodiment, an extension rod is provided on the outer wall of the hollow hose facing the positioning rod. The end of the extension rod is slidably connected to the inside of the positioning rod. An anti-detachment groove is provided on the side of the positioning rod facing the hollow hose. A strip groove is provided on the surface of the extension rod along the direction of the hollow hose. The strip groove cooperates with the protrusion on the inner wall of the positioning rod to realize the sliding positioning and anti-detachment of the extension rod.

[0007] In a preferred embodiment, another set of hollow hoses has a circular block at its end, the circular block being located at two equal points on the outer edge of the hollow hose, the end of the circular block having a protrusion, the circular block being rotatably connected to the inner side of one end of the connecting block through the protrusion, and a groove being provided at the junction of the circular block and the connecting block.

[0008] In a preferred embodiment, an annular plate is adhered to the inner wall of the hollow hose. The shape of the annular plate is adapted to the shape of the inner wall of the hollow hose. A guide post is provided at the center of the inner arc of the annular plate. The guide post is arranged radially along the hollow hose. A blocking plate is sleeved at the end of the guide post. Multiple blocking plates are spliced ​​together to form a limiting ring to limit the position of the metal wire.

[0009] In a preferred embodiment, a spring is fixedly connected between the baffle plate and the annular plate, the spring is sleeved on the outer wall of the guide post, and a partition cavity is formed between the baffle plate and the hollow hose.

[0010] In a preferred embodiment, the guiding mechanism includes a set of positioning end plates and multiple support plates. The positioning end plates are located at the ends of the guiding mechanism, the support plates are located in the middle section of the guiding mechanism, and the ends of the support plates are connected to the positioning end plates. A reinforcing plate is bolted between the ends of the two support plates and is located on the lower surface of the support plates.

[0011] In a preferred embodiment, guide grooves are symmetrically provided on both sides of the support plate. One of them is located at the bottom of the support plate at the center and has a docking block. The other is located at the bottom of the support plate at the center and has a thickened part. The thickened part has a receiving hole inside. When splicing, the docking block is inserted into the inside of the receiving hole.

[0012] In a preferred embodiment, guide grooves are provided on the upper surface of the positioning end plate and the upper surface of the support plate. The end of the guide groove on the positioning end plate is set as a semi-circle. Cylinders are provided at equal intervals on the upper surface of the positioning end plate and the upper surface of the support plate. A slot is provided at the end of the other support plate. When the two support plates are spliced, the cylinders are fitted into the inner side of the slot.

[0013] In a preferred embodiment, the drive mechanism includes a base and a connecting frame. The connecting frame is fixedly installed at the bottom of the base. A servo motor is installed inside the base, and a first triangular block is fixedly connected to the output end of the servo motor. A slider is slidably installed on the inner side of the connecting frame. A third triangular block is rotatably installed inside the slider. A second triangular block is provided between the third triangular block and the first triangular block. Connecting rods are rotatably connected between the second triangular block and the first triangular block, and between the second triangular block and the third triangular block.

[0014] In a preferred embodiment, a gear is fixedly connected to the bottom of the third triangular block, a limit rod is provided on the lower surface of the gear, the gear meshes with the cylinder, the limit rod is slidably disposed inside the guide groove, and a roller is rotatably installed inside the connecting frame, the roller is slidably disposed inside the guide groove.

[0015] The beneficial effects of this invention are: This invention achieves stable wire feeding and multi-specification adaptation through a multi-structure collaborative design of multiple sets of hollow hoses. The multiple sets of hollow hoses are connected end to end to form a flexible wire feeding channel. The rotational adaptation of the round block and the connecting block, compared with a single rigid pipe or a purely flexible hose, this combined structure retains the flexibility, allowing it to move linearly back and forth with the spray gun. At the same time, the segmented connection design avoids the swinging and loss of control problem caused by an excessively long single hose. In conjunction with the positioning rod, it can also effectively prevent the wire feeding channel from shifting, bending or dead bends when the spray gun moves, disperse the bending stress of the metal wire, and ensure the continuity of wire feeding.

[0016] This invention adopts a modular guiding mechanism and a stable driving structure. The guiding mechanism, through the splicing design of the support plate and the positioning end plate, can be flexibly adjusted according to the length of the workpiece, reducing equipment investment costs. After splicing, the guiding accuracy is ensured by the multiple positioning structure. The driving mechanism smoothly converts the rotational motion of the servo motor into the reciprocating linear motion of the spray gun through triangular block linkage, gear meshing and roller guidance, resulting in small impact during reversal. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is the overall assembly drawing of the present invention.

[0018] Figure 2 This is a schematic diagram of the end planar structure of the present invention.

[0019] Figure 3 This is the present invention. Figure 2 Enlarged structural diagram of part A.

[0020] Figure 4This is a schematic diagram of the bottom structure of the two support plates used for splicing in the center of the guiding mechanism of the present invention.

[0021] Figure 5 This is a three-dimensional structural diagram of the spray gun body and the conveying mechanism of the present invention.

[0022] Figure 6 This is a schematic diagram showing the disassembled structure of the conveying mechanism of the present invention.

[0023] Figure 7 This is a three-dimensional structural diagram of the positioning rod and hollow flexible tube of the present invention.

[0024] Figure 8 This invention relates to the internal planar structure of the hollow flexible tube.

[0025] In the diagram: 1. Spray gun body; 2. Guide mechanism; 21. Positioning end plate; 22. Support plate; 23. Thickened part; 24. Receiving hole; 25. Connecting block; 26. Guide groove; 27. Slot; 28. Guide groove; 29. ​​Cylinder; 3. Drive mechanism; 31. Base; 32. Connecting frame; 33. First triangular block; 34. Second triangular block; 35. Third triangular block; 36. Connecting rod; 37. Gear; 38. Limiting rod; 39. Slider; 310 4. Roller; 4. Conveying mechanism; 41. Main body of wire feeder; 42. Positioning rod; 43. Hollow hose; 44. Connecting block; 45. Protective tube; 46. Cavity; 47. Sleeve; 48. Anti-detachment groove; 49. Extension rod; 410. Strip groove; 411. Round block; 412. Groove; 413. Annular plate; 414. Guide post; 415. Baffle plate; 416. Spring; 417. Separating chamber; 5. Nozzle; 6. First input pipe; 7. Second input pipe. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0027] Example 1 like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, a surface spraying device for steel plate processing includes a spray gun body 1, a second input pipe 7 connected to the gas input end of the spray gun body 1, a first input pipe 6 connected to the heat source input end of the spray gun body 1, a spray pipe 5 fixedly installed at the end of the spray gun body 1, the spray pipe 5, the second input pipe 7 and the first input pipe 6 all being connected to the heating chamber of the spray gun body 1, a drive mechanism 3 fixedly connected to the end of the spray gun body 1, a conveying mechanism 4 connected to the material input end of the spray gun body 1, and a guide mechanism 2 slidably connected to the bottom of the drive mechanism 3; The conveying mechanism 4 includes a wire feeder body 41, a positioning rod 42 inserted into one side of the wire feeder body 41, multiple sets of hollow hoses 43, and a connecting block 44 fixedly installed at the end of one set of hollow hoses 43. The wire feeder body 41 has a cavity 46 inside. One end of the positioning rod 42 is integrally formed with a sleeve 47. The inner side of the end of the sleeve 47 is threaded with a protective tube 45. One end of the protective tube 45 is threaded to the material input end of the spray gun body 1. The hollow hose 43 is aligned with the wire output end of the wire feeder body 41, and the hollow hose 43 is aligned with the wire inlet end of the protective tube 45. The positioning rod 42 is located on one side of the hollow hose 43. Multiple sets of hollow hoses 43 are spaced apart and connected end to end to form a wire feeding channel for conveying metal wire.

[0028] In this embodiment, the specific implementation scenario is as follows: thermal spraying operation on the surface of steel plate flats or cylindrical sections in the workshop. During the operation, the steel plate or cylindrical section to be sprayed is fixed by an external conveyor line to ensure that the spraying surface faces the direction of the spray pipe 5. The guide mechanism 2 is set according to the length of the workpiece. After the guide mechanism 2 is spliced, it remains parallel to the central axis of the cylindrical section. The drive mechanism 3 drives the spray gun body 1 to reciprocate linearly along the guide mechanism 2. The conveying mechanism 4 continuously conveys metal wire to the spray gun through a flexible wire feeding channel composed of multiple sets of hollow hoses 43. With the rotation or translation of the workpiece, full coverage spraying of the surface of the steel plate or cylindrical section is achieved.

[0029] It should be noted that the first input pipe 6 serves as the heat source input end and can be connected to the power supply cable required for arc generation or the plasma generation source in the plasma spraying scenario to provide a high-temperature heat source for the melting of the metal wire. The second input pipe 7 is connected to compressed air or inert gas, which is used on the one hand to atomize the molten metal droplets in the heating chamber into tiny particles, and on the other hand to provide jetting power for the spraying particles to ensure that the particles impact the workpiece surface at high speed to form a dense coating.

[0030] The cavity 46 inside the wire feeder body 41 is used to accommodate the positioning rod 42. After the wire is output from the wire feeder body 41, it directly enters the wire feeding channel formed by the connection of multiple sets of hollow hoses 43. Finally, it enters the heating chamber inside the spray gun body 1 from the protective tube 45. The positioning rod 42 is located on one side of the hollow hose 43 and is threaded to the protective tube 45 through its integrally formed sleeve 47. This achieves coaxial docking between the wire feeding channel and the input end of the protective tube 45. The lateral support of the positioning rod 42 also prevents the hollow hose 43 from shifting or bending laterally and contacting the plate during the wire feeding process.

[0031] It should be noted that the protective tube 45 is made of high-temperature resistant and wear-resistant materials, such as a ceramic-lined metal tube.

[0032] Example 2 like Figure 5 , Figure 6 and Figure 7 As shown, an extension rod 49 is provided on the outer wall of the hollow hose 43 facing the positioning rod 42. The end of the extension rod 49 is slidably connected to the inside of the positioning rod 42. An anti-detachment groove 48 is provided on the side of the positioning rod 42 facing the hollow hose 43. A strip groove 410 is provided on the surface of the extension rod 49 along the direction of the hollow hose 43. The strip groove 410 cooperates with the protrusion on the inner wall of the positioning rod 42 to realize the sliding positioning and anti-detachment of the extension rod 49. A round block 411 is provided at the end of another set of hollow hoses 43. The round block 411 is located at the second point on the outer edge of the hollow hose 43. A protrusion is provided at the end of the round block 411. The round block 411 is rotatably connected to the inner side of one end of the connecting block 44 through the protrusion. A groove 412 is provided at the junction of the round block 411 and the connecting block 44.

[0033] In this embodiment, it should be noted that the extension rod 49 on the outer wall of the hollow hose 43 is inserted into the anti-detachment groove 48 of the positioning rod 42 and can slide along the groove. When the spray gun body 1 reciprocates along the guide mechanism 2 with the drive mechanism 3, the hollow hose 43 will move and rotate synchronously. By directionally bending the metal wire, the uncontrollable situation of the bent part of the metal wire is avoided, which plays a role in protecting the metal wire and the plate. Since there are multiple sets of hollow hoses 43, when the metal wire is bent due to the movement of the spray gun body 1, the bending amplitude will be distributed to each hollow hose 43, thereby greatly reducing the local bending amplitude of the metal wire and avoiding affecting the normal wire feeding. During the movement of the spray gun body 1, the hollow hose 43 will move synchronously. The extension rod 49 on its side is in the anti-detachment groove 48, which can prevent the hollow hose 43 from lateral swinging or twisting. At the same time, the cooperation between the strip groove 410 and the positioning rod 42 can determine the position of the extension rod 49 and prevent it from falling off.

[0034] When the reciprocating motion of the spray gun causes a slight bend at the joint of multiple hollow hoses 43, the round block 411 can rotate flexibly around the inner side of the connecting block 44 to avoid creases or dead bends at the joint due to rigid connection, thus ensuring the continuity of the wire feeding channel. The protrusion at the end of the round block 411 is used to reduce the difficulty of disassembly and assembly, and to facilitate the adjustment of the length of the conveying mechanism 4 according to the length of the cylinder section. The groove 412 at the junction provides rotation space for the round block 411 and can store grease to reduce wear during rotation, while also providing a reserved gap for rotation.

[0035] Example 3 like Figure 8As shown, an annular plate 413 is adhered to the inner wall of the hollow flexible tube 43. The shape of the annular plate 413 is adapted to the shape of the inner wall of the hollow flexible tube 43. A guide post 414 is provided at the center of the inner arc of the annular plate 413. The guide post 414 is arranged radially along the hollow flexible tube 43. A blocking plate 415 is sleeved at the end of the guide post 414. Multiple blocking plates 415 are spliced ​​together to form a limiting ring to limit the position of the metal wire. A spring 416 is fixedly connected between the blocking plate 415 and the annular plate 413. The spring 416 is sleeved on the outer wall of the guide post 414. A partition cavity 417 is formed between the blocking plate 415 and the hollow flexible tube 43.

[0036] In this embodiment, the specific implementation scenario is as follows: the limiting ring formed by splicing multiple baffles 415 is the core structure that adapts to multiple specifications of wire. When no wire is being fed, the spring 416 is in a naturally extended state, pushing the baffles 415 toward the center of the hollow hose 43. The inner diameter of the limiting ring is the smallest, which is suitable for thin wire. When a thicker wire is being fed, the wire squeezes the baffles 415, causing the spring 416 to be axially compressed along the guide post 414. The inner diameter of the limiting ring expands synchronously with the diameter of the wire until it is tightly fitted to the outer wall of the wire. The partition cavity 417 provides sufficient space for the compression deformation of the spring 416 on the one hand, and can isolate dust in the spraying environment on the other hand, preventing a large amount of dust from accumulating on the surface of the spring 416 or the guide post 414 and causing jamming.

[0037] It should be noted that the annular plate 413 is made of high-temperature resistant ceramic-reinforced rubber material, the guide post 414 is made of high-temperature resistant metal, the inner wall of the baffle plate 415 is provided with a wear-resistant ceramic coating, and the spring 416 is made of high-temperature resistant alloy spring wire.

[0038] Example 4 like Figure 1 , Figure 3 and Figure 4As shown, the guide mechanism 2 includes a set of positioning end plates 21 and multiple support plates 22. The positioning end plates 21 are located at the ends of the guide mechanism 2, and the support plates 22 are located in the middle section of the guide mechanism 2. The ends of the support plates 22 are connected to the positioning end plates 21. A reinforcing plate is bolted between the ends of the two support plates 22. The reinforcing plate is located on the lower surface of the support plate 22. Guide grooves 28 are symmetrically provided on both sides of the support plate 22. One of the grooves, located at the center, has a connecting block 25 at the bottom of the support plate 22, and the other groove is located at the center of the support plate 22. The bottom is provided with a thickened part 23, and the thickened part 23 has a receiving hole 24 inside. When splicing, the mating block 25 is inserted into the inside of the receiving hole 24. The upper surface of the positioning end plate 21 and the upper surface of the support plate 22 are both provided with guide grooves 26. The end of the guide groove 26 on the positioning end plate 21 is set as a semi-circle. The upper surface of the positioning end plate 21 and the upper surface of the support plate 22 are provided with cylinders 29 at equal intervals. The end of the other support plate 22 is provided with a slot 27. When the two support plates 22 are spliced, the cylinder 29 is fitted into the inside of the slot 27.

[0039] In this embodiment, the specific implementation scenario is as follows: During splicing, the two central support plates 22 are first initially positioned by inserting the docking block 25 into the receiving hole 24. Then, the slot 27 is fitted with the cylinder 29 to ensure that the guide groove 26 on the upper surface of the multiple support plates 22 is aligned and the cylinder 29 is arranged continuously after splicing. Finally, the reinforcing plate is fixed to the lower surface of the support plate 22 with bolts to strengthen the structural strength of the splicing point. The positioning end plate 21 is installed at both ends of the spliced ​​support plate 22 for connecting with external robotic arm-like adjustment devices to adjust the position of the spraying device inside the cylinder section.

[0040] It should be noted that the modular design of the support plate 22 allows the length of the guide mechanism 2 to be flexibly adjusted, eliminating the need to design separate guide devices for workpieces of different lengths, thus significantly reducing equipment investment costs. The guide groove 28 is used to connect the drive mechanism 3.

[0041] Example 5 like Figure 1 , Figure 2 and Figure 5As shown, the drive mechanism 3 includes a base 31 and a connecting frame 32. The connecting frame 32 is fixedly installed at the bottom of the base 31. A servo motor is installed inside the base 31, and a first triangular block 33 is fixedly connected to the output end of the servo motor. A slider 39 is slidably installed on the inner side of the connecting frame 32. A third triangular block 35 is rotatably installed inside the slider 39. A second triangular block 34 is provided between the third triangular block 35 and the first triangular block 33. Connecting rods 36 are rotatably connected between the second triangular block 34 and the first triangular block 33, and between the second triangular block 34 and the third triangular block 35. A gear 37 is fixedly connected to the bottom of the third triangular block 35. A limit rod 38 is provided on the lower surface of the gear 37. The gear 37 meshes with the cylinder 29. The limit rod 38 is slidably installed inside the guide groove 26. A roller 310 is rotatably installed inside the connecting frame 32. The roller 310 is rotatably installed inside the guide groove 28.

[0042] In this embodiment, the specific implementation scenario is as follows: the servo motor is fixed inside the base 31, and its output end drives the first triangular block 33 to rotate. The first triangular block 33 drives the second triangular block 34 through the connecting rod 36, and then the second triangular block 34 drives the third triangular block 35 through another set of connecting rods 36. Since the gear 37 at the bottom of the third triangular block 35 meshes with the cylinder 29, during its rotation, it will drive the entire drive mechanism 3 and the spray gun body 1 to move linearly along the guide mechanism 2. The limiting rod 38 on the lower surface of the gear 37 is embedded. Within the guide groove 26, the movement trajectory of the drive mechanism 3 is restricted. When the gear 37 moves to the semicircular part of the guide groove 26, under the limit of the guide groove 26, the gear 37 rotates around the cylinder 29 along the guide groove 26, causing the drive mechanism 3 and the spray gun body 1 to enter the circuit. During the rotation of the gear 37 around the cylinder 29, the slider 39 moves along the connecting frame 32 to adapt to the change in the position of the gear 37. The presence of the connecting rod 36 ensures that the power can be normally transmitted to the third triangular block 35, so that the gear 37 is in a state of continuous rotation.

[0043] It should be noted that the roller 310 is set in the guide groove 28, which can reduce friction and ensure the stability of the connecting frame 32.

[0044] Working principle of the invention: The device uses the spray gun body 1 as the core execution unit. The wire feeder body 41 of the conveying mechanism 4 forms a wire feeding channel through multiple sets of hollow hoses 43 connected end to end. After the metal wire is output from the wire feeder end, it enters the heating chamber of the spray gun body 1 through the wire feeding channel and the protective tube 45. The first input pipe 6 of the spray gun body 1 provides a high-temperature heat source for the arc generation power cable (arc spraying) or plasma generation source (plasma spraying) to melt the metal wire. The second input pipe 7 is connected to compressed air or inert gas to atomize the molten droplets and provide spray power. The atomized metal particles are impacted at high speed by the nozzle 5. With the rotation or translation of the workpiece, a uniform and dense full-coverage coating is finally formed. Before operation, multiple support plates 22 and positioning end plates 21 are spliced ​​according to the length of the workpiece. The guide mechanism 2 is assembled by the mating block 25 and the receiving hole 24, and the slot 27 and the cylinder 29 are fitted together to ensure that the guide groove 26 is aligned and the cylinder 29 is arranged continuously. Then, the splicing strength is strengthened by the reinforcing plate. The positioning end plate 21 is connected to the external adjustment device to fix the position of the device and limit the movement stroke of the drive mechanism 3. The workpiece to be sprayed is fixed by an external conveyor line so that the spraying surface faces the spray nozzle 5. The guide mechanism 2 is parallel to the central axis of the cylinder section. After the servo motor in the base 31 of the drive mechanism 3 starts, it drives the first triangular block 33 to rotate. The second triangular block 34 and the third triangular block 35 are linked in sequence through the connecting rod 36. The gear 37 at the bottom of the third triangular block 35 meshes with the cylinder 29 of the guide mechanism 2. Under the guidance of the limit rod 38 embedded in the guide groove 26, the rotational motion is converted into a smooth reciprocating linear motion of the drive mechanism 3 and the spray gun body 1. The roller 310 in the connecting frame 32 rolls in the guide groove 28 to reduce friction and ensure motion stability. It should be noted that when the gear 37 moves to the semi-circular end of the guide groove 26, it rotates along the cylinder 29 to change the direction of the movement path of the drive mechanism 3 and the spray gun body 1. The slider 39 slides along the connecting frame 32 to adapt to the position change, ensuring continuous power transmission. During the movement of the entire spray gun body 1, the hollow hose 43 moves and rotates synchronously with the spray gun body 1. The cavity 46 inside the wire feeder body 41 is used to accommodate the positioning rod 42, ensuring that the positioning rod 42 moves synchronously with the spray gun body 1. During the movement of the spray gun body 1, the extension rod 49 on the side of the hollow hose 43 slides in the anti-detachment groove 48. At the same time, the round block 411 at the end of the hollow hose 43 rotates around the connecting block 44, so that the bending stress of the metal wire generated when the spray gun body 1 moves is distributed to the joint of each hollow hose 43, reducing the bending amplitude and preventing dead bends in the wire feeding channel. The hollow hose 43 has an adaptive limiting structure composed of an annular plate 413, a guide post 414, a baffle plate 415 and a spring 416. The inner diameter of the limiting ring can be adjusted by the extension and retraction of the spring 416 according to the diameter of the metal wire, ensuring that the wire is fed in the center.

[0045] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A surface coating device for steel plate processing, comprising a spray gun body (1), a second input pipe (7) connected to the gas input end of the spray gun body (1), a first input pipe (6) connected to the heat source input end of the spray gun body (1), and a spray pipe (5) fixedly installed at the end of the spray gun body (1), wherein the spray pipe (5), the second input pipe (7) and the first input pipe (6) are all connected to the heating chamber of the spray gun body (1), characterized in that, The end of the spray gun body (1) is fixedly connected to a drive mechanism (3), the material input end of the spray gun body (1) is connected to a conveying mechanism (4), and the bottom of the drive mechanism (3) is slidably connected to a guide mechanism (2). The conveying mechanism (4) includes a wire feeder body (41), a positioning rod (42) inserted into one side of the wire feeder body (41), multiple sets of hollow hoses (43), and a connecting block (44) fixedly installed at the end of one set of hollow hoses (43). The wire feeder body (41) has a cavity (46) inside. One end of the positioning rod (42) is integrally formed with a sleeve (47). The inner side of the end of the sleeve (47) is threaded with a protective tube (45). One end of the protective tube (45) is threaded to the material input end of the spray gun body (1). The hollow hose (43) is aligned with the wire output end of the wire feeder body (41), and the hollow hose (43) is aligned with the wire inlet end of the protective tube (45). The positioning rod (42) is located on one side of the hollow hose (43). Multiple sets of hollow hoses (43) are spaced apart and connected end to end to form a wire feeding channel for conveying metal wire.

2. The surface spraying device for steel plate processing according to claim 1, characterized in that, The hollow hose (43) has an extension rod (49) on its outer wall facing the positioning rod (42). The end of the extension rod (49) is slidably connected to the inside of the positioning rod (42). The positioning rod (42) has an anti-detachment groove (48) on one side facing the hollow hose (43). The surface of the extension rod (49) has a strip groove (410) along the direction of the hollow hose (43). The strip groove (410) cooperates with the inner wall protrusion of the positioning rod (42) to realize the sliding positioning and anti-detachment of the extension rod (49).

3. The surface spraying device for steel plate processing according to claim 2, characterized in that, Another set of hollow hoses (43) has a round block (411) at the end. The round block (411) is located at the second point on the outer edge of the hollow hose (43). The end of the round block (411) has a protrusion. The round block (411) is rotatably connected to the inner side of one end of the connecting block (44) through the protrusion. A groove (412) is provided at the junction of the round block (411) and the connecting block (44).

4. The surface spraying device for steel plate processing according to claim 3, characterized in that, An annular plate (413) is bonded to the inner wall of the hollow flexible tube (43). The shape of the annular plate (413) is adapted to the shape of the inner wall of the hollow flexible tube (43). A guide post (414) is provided at the center of the inner arc of the annular plate (413). The guide post (414) is arranged radially along the hollow flexible tube (43). A blocking plate (415) is sleeved at the end of the guide post (414). Multiple blocking plates (415) are spliced ​​together to form a limiting ring to limit the position of the metal wire.

5. The surface spraying device for steel plate processing according to claim 4, characterized in that, A spring (416) is fixedly connected between the baffle plate (415) and the annular plate (413). The spring (416) is sleeved on the outer wall of the guide post (414). A partition cavity (417) is formed between the baffle plate (415) and the hollow hose (43).

6. The surface spraying device for steel plate processing according to claim 1, characterized in that, The guide mechanism (2) includes a set of positioning end plates (21) and multiple support plates (22). The positioning end plates (21) are located at the ends of the guide mechanism (2), and the support plates (22) are located in the middle section of the guide mechanism (2). The ends of the support plates (22) are connected to the positioning end plates (21). A reinforcing plate is bolted between the ends of the two support plates (22), and the reinforcing plate is located on the lower surface of the support plate (22).

7. A surface spraying device for steel plate processing according to claim 6, characterized in that, The support plate (22) has symmetrical guide grooves (28) on both sides. One of them has a docking block (25) at the bottom of the support plate (22) at the center, and the other has a thickened part (23) at the bottom of the support plate (22) at the center. The thickened part (23) has a receiving hole (24) inside. When splicing, the docking block (25) is inserted into the inside of the receiving hole (24).

8. A surface coating device for steel plate processing according to claim 7, characterized in that, The upper surface of the positioning end plate (21) and the upper surface of the support plate (22) are provided with guide grooves (26). The end of the guide groove (26) on the positioning end plate (21) is set as a semi-circle. The upper surface of the positioning end plate (21) and the upper surface of the support plate (22) are provided with cylinders (29) at equal intervals. The end of the other support plate (22) is provided with a slot (27). When the two support plates (22) are spliced, the cylinder (29) is fitted into the inner side of the slot (27).

9. A surface coating device for steel plate processing according to claim 1, characterized in that, The drive mechanism (3) includes a base (31) and a connecting frame (32). The connecting frame (32) is fixedly installed at the bottom of the base (31). A servo motor is installed inside the base (31), and the output end of the servo motor is fixedly connected to a first triangular block (33). A slider (39) is slidably installed on the inner side of the connecting frame (32). A third triangular block (35) is rotatably installed inside the slider (39). A second triangular block (34) is provided between the third triangular block (35) and the first triangular block (33). A connecting rod (36) is rotatably connected between the second triangular block (34) and the first triangular block (33), and between the second triangular block (34) and the third triangular block (35).

10. A surface coating device for steel plate processing according to claim 9, characterized in that, The bottom of the third triangular block (35) is fixedly connected to a gear (37), and a limit rod (38) is provided on the lower surface of the gear (37). The gear (37) meshes with the cylinder (29), and the limit rod (38) is slidably disposed inside the guide groove (26). A roller (310) is rotatably installed inside the connecting frame (32), and the roller (310) is slidably disposed inside the guide groove (28).

Images