Metal plate spraying device and spraying process for mechanical manufacturing

Abstract

The invention discloses a metal plate spraying device for mechanical manufacturing and a spraying process, and relates to the technical field of plate production, the metal plate spraying device comprises a raw material storage mechanism, the raw material storage mechanism is used for storing a to-be-sprayed metal plate, and the to-be-sprayed metal plate is hung on the raw material storage mechanism through a hoisting mechanism; the hoisting mechanism comprises a moving assembly, the lower end of the moving assembly is connected with two hanging assemblies through a cross rod frame, each hanging assembly comprises two arc-shaped strips, and the two arc-shaped strips are driven by a power assembly to sequentially extend out of the two sides of the metal plate and are connected with through holes of the metal plate. Therefore, the metal plate is fixed from two surfaces of the metal plate in a staggered manner. Through the suspension type chain conveyor and the automatic hoisting mechanism, continuous conveying and automatic hanging of the metal plates are achieved, the spraying operation efficiency is remarkably improved, and the defects that traditional manual spraying is low in speed and efficiency are overcome.

Description

Technical Field

[0001] The present invention relates to the technical field of sheet production, and particularly relates to a spraying device and spraying process for metal sheets used in mechanical manufacturing. Background Art

[0002] Metal sheet spraying devices are widely used in the field of mechanical manufacturing to apply protective or functional coatings to metal sheets such as steel sheets and aluminum sheets, and are commonly found in industries such as excavators, automobiles, and construction machinery. The coating can not only enhance the corrosion resistance, wear resistance, and aesthetic performance of the metal sheet, but also meet specific functional requirements (such as heat insulation or conductivity). In mechanical manufacturing, the size of metal sheets is usually large (such as 0.5 - 5 meters in length), and the thickness can reach 10 - 60 millimeters.

[0003] In the existing metal sheet spraying technology, iron wires are commonly used to hang the sheets, and then the coating is applied by manually operating a spray gun. Although this method is simple and low-cost, it has significant technical defects. First, manual spraying is inefficient, relying on the experience and skills of the operator, with a slow spraying speed and poor consistency. For example, spraying a single large sheet (such as a 1-square-meter steel sheet) may take several minutes, and in mass production, manual operation is difficult to meet the requirements of high-efficiency and continuous production. Second, the iron wire hanging method is likely to leave hanging point defects on the sheet surface. The contact area between the iron wire and the sheet (usually 1 - 2 square millimeters) blocks the paint spraying, resulting in local coating loss or uneven thickness on the sheet surface, forming "hanging points" or "shadow areas". These hanging points not only affect the appearance of the coating, but may also weaken the corrosion resistance and increase the subsequent repair cost. Summary of the Invention

[0004] The purpose of the present invention is to provide a spraying device and spraying process for metal sheets used in mechanical manufacturing, which solves the problem that in the existing metal sheet spraying technology, iron wires are commonly used to hang the sheets, and then the coating is applied by manually operating a spray gun.

[0005] The present invention solves the above technical problems through the following technical solutions. The present invention includes: A raw material storage mechanism for storing the metal sheets to be sprayed. The metal sheets to be sprayed are hung on the raw material storage mechanism through a hoisting mechanism. The hoisting mechanism includes a moving component, and the lower end of the moving component is connected with two hanging components through a cross bar frame. Each hanging component includes two arc-shaped bars, and the two arc-shaped bars are driven by a power component to sequentially extend from both sides of the metal sheet and connect with the through holes of the metal sheet, so as to realize fixing the metal sheet from both sides in an alternating manner. Suspension chain conveyor, the raw material storage mechanism is arranged on one side of the head end of the suspension chain conveyor, and a plurality of first hanger toolings are arranged on the conveyor belt of the suspension chain conveyor. The hoisting mechanism located on the raw material storage mechanism moves to the first hanger tooling to realize the transmission of metal plates through the suspension chain conveyor; Two spraying mechanisms, the two spraying mechanisms are arranged staggeredly along the transmission direction of the suspension chain conveyor, and the two spraying mechanisms are located on both sides of the suspension chain conveyor. When the metal plate moves in the stroke between the two spraying mechanisms, the mounting component switches the fixing direction of the metal plate to realize the sequential and comprehensive spraying of both sides of the metal plate; Finished product storage mechanism, the finished product storage mechanism is arranged on one side of the end of the suspension chain conveyor, and it is used to store the sprayed metal plates.

[0006] Preferably, the raw material storage mechanism has the same structure as the finished product storage mechanism; the raw material storage mechanism includes a second hanger tooling installed through a moving frame. The second hanger tooling includes a long-shaped frame. A long-shaped groove is provided on the lower horizontal plate part of the long-shaped frame along its length direction, and a straight rack is fixed on the inner side wall of the long-shaped frame; the structure of the first hanger tooling is the same as that of the second hanger tooling.

[0007] Preferably, the moving component includes a connecting seat. A first motor is fixed in the connecting seat. A support housing is fixed on the upper side of the connecting seat. A ball is rotatably installed on the lower side of the support housing. A driving gear that is rotatably installed in the support housing and connected to the output end of the first motor is installed in the support housing. Two driven gears that are rotatably installed in the support housing and meshed with the driving gear are installed, and both of the two driven gears are meshed with the straight rack. When the first motor runs, it drives the overall displacement of the hoisting mechanism to realize moving the hoisting mechanism from the raw material storage mechanism to the suspension chain conveyor or moving the hoisting mechanism from the suspension chain conveyor to the finished product storage mechanism.

[0008] Preferably, the cross bar frame includes a cross bar fixed to the lower end of the moving component. Sliding frames are slidably sleeved on both sides of the cross bar. Bolts are threadedly connected to the sliding frames. The two mounting components are respectively fixed to the two sliding frames.

[0009] Preferably, the mounting component further includes a mounting seat installed on the cross bar frame. The power component includes a second motor fixed to the mounting seat. The output end of the second motor is connected to a rotating shaft that is rotatably installed on the mounting seat. Two movable gears are rotatably installed on the rotating shaft; Two arc-shaped bars are slidably arranged on the mounting base, and the sliding direction of the arc-shaped bars is along their radian direction. The two arc-shaped bars are respectively located on both sides of the mounting base. A first support rod is slidably installed at the lower end of one of the arc-shaped bars, and the first support rod extends to the outside of the corresponding arc-shaped bar. A spring is arranged on the inner side of the first support rod. A second support rod is fixed at the lower end of the other arc-shaped bar. The metal plate is initially mounted on the first support rod; Arc-shaped racks are arranged at the upper ends of the two arc-shaped bars, and the two arc-shaped racks are respectively meshed and connected with two movable gears; A coupling member is slidably arranged on the rotating shaft along its axial direction. By sliding the coupling member, it is circumferentially coupled with one of the movable gears, so as to drive the corresponding movable gear to rotate through the rotating shaft, and the corresponding arc-shaped bar rotates downward to be hooked with the metal plate. The coupling member is pushed and slid by a pushing component.

[0010] Preferably, a long chute is arranged on the rotating shaft along its axial direction. The coupling member is slidably installed in the long chute. A plurality of annular grooves and straight grooves arranged along its axial direction are arranged on the inner side wall of the movable gear. The plurality of annular grooves form a plurality of convex ring parts on the inner wall of the movable gear; The coupling member includes a slide bar slidably arranged in the long chute. Outer blocks are fixed at both ends of the slide bar. Two groups of protruding parts are arranged on the slide bar. One group of the protruding parts is axially butted with a plurality of annular grooves on the corresponding movable gear, and the other group of the protruding parts is axially butted with a plurality of convex ring parts on the corresponding movable gear. The connection state between the coupling member and the two movable gears is switched by a pushing component.

[0011] Preferably, the pushing component includes a reset rod installed at the upper end of the arc-shaped bar through a torsion spring seat and a guiding member fixed on the side wall of the mounting base through a bracket. The guiding member is arranged at an angle with the arc-shaped bar. One end of it extends to the axial inner side of the arc-shaped bar, and the other end extends to the axial outer side of the arc-shaped bar; The guiding member includes a guiding rod fixed on the bracket and a one-way rotating rod installed at the inner end of the guiding rod through a torsion spring.

[0012] Preferably, a blocking block is fixed on the side of the arc-shaped bar, and the blocking block is located above the cross plate part of the mounting base to limit the maximum downward sliding stroke of the arc-shaped bar.

[0013] Preferably, the spraying mechanism includes a vertical electric sliding table and a nozzle installed on the moving end of the vertical electric sliding table, and the nozzle is connected to an external paint supply device through a pipeline.

[0014] The present invention also discloses a spraying process using a spraying device for metal plates used in mechanical manufacturing, including the following steps: Step 1. Preparation: Hang multiple metal plates to be sprayed on the raw material storage mechanism in sequence through a hoisting mechanism. Specifically, the metal plates are hung on the first support rod, and the raw material storage mechanism and the finished product storage mechanism are respectively moved to their corresponding positions; Step 2. Move the metal plate: Operate the moving component to move the metal plate with the hoisting mechanism to the first fixture of the suspended chain conveyor, and the metal plate is transported through the suspended chain conveyor; Step 3. First spraying: Start the first spraying mechanism to spray the back surface of the metal plate in the hanging direction; Step 4. Change the hanging surface: Drive the power component to drive the arc bar fixing the second support rod to turn downward until the second support rod pushes the first support rod to contract, that is, the second support rod bears the weight of the metal plate to complete the replacement of the hanging surface; Step 5. Second spraying: Start the second spraying mechanism to spray the other side of the metal plate; Step 6. Move to the finished product storage mechanism: When the metal plate that has completed the spraying operation moves to the corresponding position of the finished product storage mechanism, operate the moving component to move the metal plate with the hoisting mechanism to the second fixture of the finished product storage mechanism.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Through the suspended chain conveyor and the automatic hoisting mechanism, continuous transmission and automatic hanging of metal plates are realized, significantly improving the spraying operation efficiency and overcoming the defects of slow speed and low efficiency of traditional manual spraying.

[0016] 2. Two staggered spraying mechanisms are adopted, and in cooperation with the hoisting mechanism to switch the hanging surface of the metal plate, comprehensive spraying of both sides of the metal plate is realized, avoiding the problems of hanging points and shadow areas caused by wire suspension, and improving the coating uniformity and integrity.

[0017] 3. The hoisting mechanism realizes the automatic transfer of metal plates from the raw material storage mechanism to the suspended chain conveyor and then to the finished product storage mechanism through the moving component and the power component, reducing manual intervention and improving the continuity and stability of the production process.

[0018] 4. The sliding frame design on the cross bar allows adjustment of the spacing of the hanging components to adapt to metal plates of different widths and sizes, meeting the diverse needs of mechanical manufacturing.

[0019] 5. By eliminating the hanging point defects and ensuring uniform coating thickness, the problem of reduced anti-corrosion performance caused by coating defects or unevenness is reduced, thereby reducing the subsequent repair and maintenance costs. Description of the Drawings

[0020] Figure 1Schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 Schematic diagram of the three-dimensional structure of the hanging chain conveyor; Figure 3 is Figure 2 The enlarged structure diagram at position A in Figure 4 Schematic diagram of the three-dimensional structure of the raw material storage mechanism; Figure 5 is Figure 4 The enlarged structure diagram at position B in Figure 6 Schematic diagram of the three-dimensional structure of the spraying mechanism; Figure 7 Schematic diagram of the three-dimensional structure of the hoisting mechanism; Figure 8 Schematic diagram of the three-dimensional structure of the moving component; Figure 9 Schematic diagram of the half-section three-dimensional structure of the mounting component; Figure 10 Schematic diagram of the planar structure of the mounting component; Figure 11 Schematic diagram of the structure of the rotating shaft connected to the movable gear; Figure 12 Schematic diagram of the half-section three-dimensional structure of the movable gear.

[0021] The numbers in the figure represent: 1 - Hanging chain conveyor; 11 - First sling tooling; 2 - Raw material storage mechanism; 21 - Second sling tooling; 211 - Long-shaped frame; 212 - Long-shaped groove; 213 - Straight rack; 22 - Moving frame; 3 - Hoisting mechanism; 31 - Moving component; 311 - Connecting seat; 312 - First motor; 313 - Support housing; 314 - Driving gear; 315 - Driven gear; 316 - Side wheel; 32 - Electric control box; 331 - Cross bar; 332 - Sliding frame; 333 - Bolt; 34 - Mounting component; 341 - Mounting seat; 342 - Second motor; 343 - Rotating shaft; 344 - Movable gear; 3441 - Annular groove; 3442 - Straight groove; 345 - Arc-shaped bar; 346 - Block; 347 - Arc-shaped rack; 351 - Guide rod; 352 - One-way rotating rod; 353 - Reset rod; 36 - Coupling part; 361 - Protruding part; 362 - Outer block; 363 - Sliding bar; 371 - First support rod; 372 - Spring; 373 - Second support rod; 4 - Spraying mechanism; 41 - Vertical electric sliding table; 42 - Nozzle; 5 - Finished product storage mechanism; 100 - Metal plate. Specific embodiments

[0022] The above and other technical features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings.

[0023] Embodiment 1: This embodiment provides a technical solution: a metal sheet spraying device for mechanical manufacturing, such as Figures 1 to 12 As shown, it includes a raw material storage mechanism 2, a hanging chain conveyor 1, a hoisting mechanism 3, two spraying mechanisms 4 and a finished product storage mechanism 5; the hanging chain conveyor 1 is an important component in this embodiment, which plays the role of transmitting the metal plate 100, and it can adopt an existing and adapted model; but it should be noted that: a plurality of first hoisting tools 11 are arranged on the conveyor belt of the hanging chain conveyor 1; the metal plate 100 is mounted on the raw material storage mechanism 2, the hanging chain conveyor 1 and the finished product storage mechanism 5 through the hoisting mechanism 3. When the metal plate 100 moves, the corresponding lifting mechanism 3 will also move synchronously; the raw material storage mechanism 2 is arranged on one side of the head end of the hanging chain conveyor 1, and is used to store the metal plate 100 to be sprayed, and the finished product storage mechanism 5 is arranged on one side of the end of the hanging chain conveyor 1, which is used to store the metal plate 100 that has been sprayed, and the two spraying mechanisms 4 are respectively located on both sides of the hanging chain conveyor 1 between the raw material storage mechanism 2 and the finished product storage mechanism 5, and the two spraying mechanisms 4 are staggered along the transmission path of the hanging chain conveyor 1.

[0024] In this embodiment, the raw material storage mechanism 2 and the finished product storage mechanism 5 have the same structure, and only the storage position is different from the stored metal plate 100. The raw material storage mechanism 2 includes a second sling fixture 21 installed by a movable frame 22. The bottom of the support of the movable frame 22 has universal wheels for easy movement, and the universal wheels have a self-locking function, that is, the raw material storage mechanism 2 or the finished product storage mechanism 5 can also be locked in the corresponding position; the second sling fixture 21 includes an elongated frame 211, and the lower side horizontal plate portion of the elongated frame 211 is provided with an elongated groove 212 arranged along its length direction, and the inner side wall of the elongated frame 211 is fixed with a straight rack 213; the structure of the first sling fixture 11 is the same as that of the second sling fixture 21, and the difference between the two is that the length of the first sling fixture 11 is smaller than the length of the second sling fixture 21.

[0025] The hoisting mechanism 3 is a core component in this embodiment, which can replace the mounting surface of the metal plate 100, and then stagger the side of the spraying operation of the spraying mechanism 4, so as to avoid leaving hanging points on the outer surface of the metal plate 100, thereby improving the spraying quality of the metal plate 100. The hoisting mechanism 3 includes a moving component 31, and the moving component 31 cooperates with the first hoisting tool 11 or the moving component 31 with the second hoisting tool 21 to achieve displacement of the hoisting mechanism 3, so as to move the metal plate 100 to the hanging chain conveyor 1 or the finished product storage mechanism 5, and realize automated operation.

[0026] The moving component 31 includes a connecting seat 311. A first motor 312 is fixed inside the connecting seat 311. A support housing 313 is fixed to the upper side of the connecting seat 311. A ball (not shown in the figure) is rotatably installed on the lower side of the support housing 313. The ball contacts the upper surface of the lower lateral part of the long frame 211, which can reduce the friction. A driving gear 314 rotatably installed inside the support housing 313 and connected to the output end of the first motor 312. Two driven gears 315 meshing with the driving gear 314 are rotatably installed inside the support housing 313, and both of the two driven gears 315 are meshingly connected with a straight rack 213.

[0027] When the first lifting tooling 11 is docked with the second lifting tooling 21, the first motor 312 is operated to drive the overall displacement of the hoisting mechanism 3, so as to move the hoisting mechanism 3 from the raw material storage mechanism 2 to the suspended chain conveyor 1 or move the hoisting mechanism 3 from the suspended chain conveyor 1 to the finished product storage mechanism 5; An electric control box 32 is provided in the moving component 31, which has a power storage source and a controller inside, so as to provide power and a control unit for the hoisting mechanism 3; A side wheel 316 is installed on the side part of the support housing 313 on the side far from the driven gear 315. The side wheel 316 contacts the inner side wall of the long frame 211. The side wheel 316 is used to ensure the meshing fit degree between the driven gear 315 and the straight rack 213.

[0028] Two mounting components 34 are connected to the lower end of the moving component 31 through a cross bar frame. In order to enable the hoisting mechanism 3 to adapt to metal plates 100 of different widths for mounting, the cross bar frame includes a cross bar 331 fixed to the lower end of the moving component 31. Sliding frames 332 are slidably sleeved on both sides of the cross bar 331. The two mounting components 34 are respectively fixed to the two sliding frames 332. A bolt 333 is threadedly connected to the sliding frame 332, so as to lock / loosen the sliding frame 332. A scale can be engraved on the cross bar 331 to facilitate the operator to accurately adjust the position of the mounting component 34.

[0029] The mounting component 34 includes a mounting seat 341 installed on the sliding frame 332 of the crossbar frame. A power component is provided on the mounting seat 341, and two arc-shaped bars 345 are slidably arranged on the mounting seat 341. The sliding direction of the arc-shaped bar 345 is along its arc direction, that is, the arc-shaped bar 345 essentially rotates around its center. The arc-shaped bar 345 slidably penetrates through the corresponding position of the mounting seat 341. The two arc-shaped bars 345 are respectively located on both sides of the mounting seat 341. A first support rod 371 is slidably installed at the lower end of one of the arc-shaped bars 345, and the first support rod 371 extends to the outside of the corresponding arc-shaped bar 345. A spring 372 is arranged on the inner side of the first support rod 371. Specifically, an installation inner hole is opened at the lower end of the corresponding arc-shaped bar 345, and the spring 372 and the first support rod 371 are sequentially arranged from the inside to the outside in the installation inner hole. The dimension of the first support rod 371 located in the installation inner hole has a certain length, so that it can bear the weight of the metal plate 100 without tilting; a second support rod 373 is fixed at the lower end of the other arc-shaped bar 345.

[0030] It should be noted that: both the second support rod 373 and the first support rod 371 are located on an arc centered on the center of the arc-shaped bar 345. That is, when the two arc-shaped bars 345 slide downward, the first support rod 371 and the second support rod 373 will eventually touch and dock; the diameter of the through hole of the metal plate 100 is greater than the outer diameter of the first support rod 371, and the outer diameter of the first support rod 371 is greater than the outer diameter of the second support rod 373; since the arc-shaped bar 345 slides in its arc direction, when the metal plate 100 is hung on the first support rod 371 or the second support rod 373, the gravity of the metal plate 100 acting on the first support rod 371 or the second support rod 373 is vertically downward. Therefore, the arc-shaped bar 345 and the mounting seat 341 can bear the weight of the metal plate 100 and will not cause self-displacement of the arc-shaped bar 345. During use, first hang the metal plate 100 on the first support rod 371.

[0031] The power component includes a second motor 342 fixed to the mounting seat 341. The output end of the second motor 342 is connected to a rotating shaft 343 that is rotatably installed on the mounting seat 341. Two movable gears 344 are rotatably installed on the rotating shaft 343; arc-shaped racks 347 are arranged at the upper ends of the two arc-shaped bars 345, and the two arc-shaped racks 347 are respectively meshed with the two movable gears 344. The meshing states of the two arc-shaped racks 347 and the two movable gears 344 are: the lower end of one arc-shaped rack 347 is connected to the corresponding movable gear 344. At this time, the upper end of the other arc-shaped rack 347 is connected to the corresponding movable gear 344, so that the first support rod 371 and the second support rod 373 are respectively in the low position and the high position.

[0032] A coupling member 36 is slidably arranged along the axial direction of a rotating shaft 343. By sliding the coupling member 36, it is circumferentially coupled with an active gear 344, so as to drive a corresponding active gear 344 to rotate through the rotating shaft 343. The coupling member 36 can only be circumferentially coupled with one active gear 344 each time. The coupling member 36 is pushed and slid by a pushing component, and then the pushing component determines which active gear 344 the coupling member 36 is circumferentially coupled with, and further changes which active gear 344 is rotated.

[0033] Further, a long chute is arranged on the rotating shaft 343 along its axial direction. The coupling member 36 is slidably installed in the long chute. A plurality of annular grooves 3441 and straight grooves 3442 arranged along its axial direction are formed on the inner side wall of the active gear 344. The plurality of annular grooves 3441 are evenly and intermittently arranged, and the arrangement of the plurality of annular grooves 3441 forms a plurality of convex ring parts on the inner wall of the active gear 344.

[0034] Further, the coupling member 36 includes a slide bar 363 slidably arranged in the long chute. Outer blocks 362 are fixed at both ends of the slide bar 363. The outer blocks 362 extend out of the long chute. Two groups of convex parts 361 are arranged on the slide bar 363. One group of convex parts 361 is axially butted with a plurality of annular grooves 3441 on the corresponding active gear 344, and the other group of convex parts 361 is axially butted with a plurality of convex ring parts on the corresponding active gear 344. That is, when the rotating shaft 343 is driven to rotate by the second motor 342, due to the cooperation of the coupling member 36, the active gear 344 with which the convex part 361 is axially butted with the convex ring part will be driven to rotate.

[0035] The connection state between the coupling member 36 and the two active gears 344 is switched by a pushing component. The pushing component includes a reset rod 353 installed at the upper end of an arc-shaped bar 345 through a torsion spring seat and a guiding member fixed to the side wall of the mounting seat 341 through a bracket. The guiding member is arranged at an angle with the arc-shaped bar 345. One end of it extends to the axial inner side of the arc-shaped bar 345 (that is, axially overlaps with the arc-shaped bar 345), and the other end extends to the axial outer side of the arc-shaped bar 345 (that is, does not axially overlap with the arc-shaped bar 345); the guiding member includes a guiding rod 351 fixed to the bracket and a one-way rotating rod 352 installed in the inner end of the guiding rod 351 through a torsion spring (not shown in the figure), and the inner end of the one-way rotating rod 352 extends to the axial inner side of the arc-shaped bar 345. The one-way rotating rod 352 cannot be flipped to one side of the arc-shaped bar 345 and can be flipped to the side away from the arc-shaped bar 345.

[0036] In other embodiments, the pushing component can also be replaced by two telescopic electric rods, and the two telescopic electric rods are respectively installed on both sides of the mounting base 341. The telescopic ends of the two telescopic electric rods respectively correspond to the two outer blocks 362. When the straight grooves 3442 of the two movable gears 344 correspond, by extending and retracting the telescopic ends of the corresponding telescopic electric rods, the coupling member 36 can be pushed to move, so as to realize the transmission connection between the rotating shaft 343 and different movable gears 344.

[0037] A blocking block 346 is fixed to the side of the arc-shaped strip 345, and the blocking block 346 is located above the cross plate portion of the mounting base 341. When the arc-shaped strip 345 slides downward until the blocking block 346 contacts the mounting base 341, the arc-shaped strip 345 cannot slide downward any further, so as to realize the maximum stroke limit of the downward sliding of the arc-shaped strip 345.

[0038] The two spraying mechanisms 4 are arranged staggeredly along the transmission direction of the suspended chain conveyor 1, and the two spraying mechanisms 4 are located on both sides of the suspended chain conveyor 1. The spraying mechanism 4 includes a vertical electric sliding table 41 and a nozzle 42 installed on the moving end of the vertical electric sliding table 41, and the nozzle 42 is connected to an external paint supply device through a pipeline; the vertical electric sliding table 41 vertically drives the nozzle 42 to displace, and cooperates with the transmitted metal plate 100 of the suspended chain conveyor 1, so as to spray the surface of the metal plate 100 comprehensively. In other embodiments, the vertical electric sliding table 41 can also be replaced by a working robotic arm.

[0039] Embodiment 2, this embodiment provides a technical solution: a spraying process of a metal plate spraying device for mechanical manufacturing, as Figures 1 to 12 shown. For a clearer description and easier understanding, the structures of the two pushing components, the arc-shaped strip 345, the arc-shaped rack 347 and the movable gear 344 are respectively called the first hanging member and the second hanging member, and the one with the first support rod 371 is the first hanging member, and the one with the second support rod 373 is the second hanging member; it includes the following steps: Step 1. Preparation work: Hang a plurality of metal plates 100 to be sprayed on the raw material storage mechanism 2 through the hoisting mechanism 3 in sequence. Specifically: initially, the arc-shaped strip 345 of the first hanging member extends downward, and the metal plate 100 is hung on the first support rod 371 of the first hanging member; at the same time, the position of the hoisting mechanism 3 can be adjusted through the moving component 31, so that the metal plates 100 are densely arranged, so that more metal plates 100 can be placed on one raw material storage mechanism 2, and then the raw material storage mechanism 2 and the finished product storage mechanism 5 are respectively moved to the corresponding positions for subsequent use; Step 2. Move the metal plate 100: Operate the suspended chain conveyor 1 so that the corresponding first lifting tooling 11 is docked with the second lifting tooling 21 of the raw material storage mechanism 2. Operate the moving assembly 31 to move the metal plate 100 with the hoisting mechanism 3 mounted thereon to the first lifting tooling 11 of the suspended chain conveyor 1. Subsequently, the metal plate 100 is transported by the suspended chain conveyor 1 and will be transported and moved towards the side of the spraying mechanism 4; The specific process of moving the hoisting mechanism 3 by the moving assembly 31 is as follows: Operate the first motor 312, which will drive the active gear 314 to rotate, and further drive the two passive gears 315 to rotate. The passive gears 315 cooperate with the straight rack 213 of the raw material storage mechanism 2 to drive the support housing 313 to gradually move into the first lifting tooling 11 until the passive gears 315 mesh with the straight rack 213 of the first lifting tooling 11, and finally the entire support housing 313 moves into the first lifting tooling 11. Finally, the suspended chain conveyor 1 drives the hoisting mechanism 3 and the metal plate 100 to move; Step 3. First spraying: Start the first spraying mechanism 4 to perform spraying operations on the back of the metal plate 100 in the mounting direction (i.e., the side away from the first support rod 371); Step 4. Change the mounting surface: Drive the power assembly to drive the arc-shaped strip 345 fixing the second support rod 373 to turn downward until the second support rod 373 presses against and contracts the first support rod 371, that is, the second support rod 373 bears the weight of the metal plate 100 to complete the replacement of the mounting surface; The specific process of Step 4 is as follows: At this time, the moving gear 344 in the second hook member is circumferentially coupled with the rotating shaft 343 through the coupling member 36, while the moving gear 344 in the first hook member is in a state of rotational connection with the rotating shaft 343; When operating the second motor 342, the moving gear 344 of the second hook member can be driven to rotate by the rotating shaft 343, and then the arc-shaped strip 345 and the second support rod 373 in the second hook member move downward in an arc until the second support rod 373 presses against and contracts the first support rod 371, and the metal plate 100 will be supported by the second support rod 373. The second support rod 373 replaces the first support rod 371 to bear the weight of the metal plate 100; During the above operation process, the reset rod 353 in the second hook member will contact the outer side of the corresponding one-way rotating rod 352, and due to the guidance of the one-way rotating rod 352, the reset rod 353 will gradually turn upward, storing energy for the deformation of the torsion spring until the reset rod 353 disengages from the contact with the guiding rod 351. The reset rod 353 will rebound due to the acting force of the torsion spring (at this time, the straight grooves 3442 of the two movable gears 344 will correspond). The end of the reset rod 353 will strike the corresponding outer block 362, thereby applying a force for the movement of the coupling member 36. After the coupling member 36 moves, the movable gear 344 in the first hook member and the rotating shaft 343 are circumferentially coupled through the coupling member 36, while the movable gear 344 in the second hook member is in a rotatable connection state with the rotating shaft 343, completing the switching of the transmission (at this time, it should be noted that it is necessary to avoid the contact between the reset rod 353 and the outer block 362 to prevent interference between the outer block 362 and the reset rod 353 during rotation); Subsequently, when the second motor 342 is further operated, the rotating shaft 343 will drive the movable gear 344 of the first hook member to rotate, thereby driving the arc-shaped strip 345 and the second support rod 373 of the first hook member to contract upward. During this process, the reset rod 353 of the first hook member will contact the inner side of the one-way rotating rod 352. Due to the acting force of the torsion spring, the one-way rotating rod 352 will be pushed to turn outward, enabling the reset rod 353 to pass smoothly, and the arc-shaped strip 345 of the first hook member contracts upward to avoid interfering with the spraying of the metal plate 100; Step Five: Second spraying: Start the second spraying mechanism 4 to perform spraying operation on the other side of the metal plate 100; Step Six: Move to the finished product storage mechanism 5: When the metal plate 100 that has completed the spraying operation moves to correspond to the finished product storage mechanism 5, the metal plate 100 mounted with the hoisting mechanism 3 is moved to the second lifting tooling 21 of the finished product storage mechanism 5 by operating the moving component 31; The specific process of moving the hoisting mechanism 3 by the moving component 31 is as follows: When the first motor 312 is operated, it will drive the active gear 314 to rotate, and further drive the two passive gears 315 to rotate. The passive gears 315 cooperate with the straight racks 213 of the first lifting tooling 11, driving the support housing 313 to gradually move into the second lifting tooling 21 of the finished product storage mechanism 5 until the passive gears 315 mesh with the straight racks 213 of the finished product storage mechanism 5, and finally the entire support housing 313 moves into the second lifting tooling 21 of the finished product storage mechanism 5.

[0040] After the spraying operation of the metal plate 100 is completed by the spraying device in this embodiment, a subsequent process dedicated to spraying the through holes of the metal plate 100 can be set up. Since the through holes on the metal plate 100 are all used for inserting bolts, it does not affect the appearance of the metal plate 100.

[0041] The above are only the preferred embodiments of the present invention, which are illustrative rather than restrictive to the present invention. Those skilled in the art understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present invention, but all will fall within the protection scope of the present invention.

Claims

1. A metal sheet spraying device for mechanical manufacturing, characterized in that, Including: A raw material storage mechanism for storing metal plates to be sprayed. The metal plates to be sprayed are hung on the raw material storage mechanism by a hoisting mechanism. The hoisting mechanism includes a moving component. The lower end of the moving component is connected with two hanging components through a cross bar frame. Each hanging component includes two arc-shaped bars. The two arc-shaped bars are driven by a power component to sequentially extend from both sides of the metal plate and be connected with the through holes of the metal plate, so as to realize fixing the metal plate alternately from both sides thereof. A suspension chain conveyor. The raw material storage mechanism is arranged on one side of the head end of the suspension chain conveyor. A plurality of first jig tools are arranged on the conveyor belt of the suspension chain conveyor. The hoisting mechanism located on the raw material storage mechanism moves to the first jig tool to realize the transmission of the metal plate through the suspension chain conveyor. Two spraying mechanisms. The two spraying mechanisms are arranged staggeredly along the transmission direction of the suspension chain conveyor, and the two spraying mechanisms are located on both sides of the suspension chain conveyor. When the metal plate moves in the stroke between the two spraying mechanisms, the direction of fixing the metal plate by the hanging component is switched to realize spraying both sides of the metal plate comprehensively in sequence. A finished product storage mechanism arranged on one side of the tail end of the suspension chain conveyor for storing the sprayed metal plates.

2. The metal sheet spraying device for mechanical manufacturing according to claim 1, wherein The raw material storage mechanism has the same structure as the finished product storage mechanism. The raw material storage mechanism includes a second jig tool installed through a moving frame. The second jig tool includes a long-shaped frame. A long-shaped groove is formed in the lower horizontal plate part of the long-shaped frame along its length direction. A straight rack is fixed on the inner side wall of the long-shaped frame. The structure of the first jig tool is the same as that of the second jig tool.

3. The metal sheet spraying device for mechanical manufacturing according to claim 2, wherein, The moving component includes a connecting seat. A first motor is fixed in the connecting seat. A support shell is fixed on the upper side of the connecting seat. A ball is rotatably installed on the lower side of the support shell. A driving gear rotatably installed in the support shell and connected with the output end of the first motor is installed in the support shell. Two driven gears meshed with the driving gear are rotatably installed in the support shell, and both of the two driven gears are meshed with the straight rack. When the first motor runs, it drives the whole hoisting mechanism to displace, so as to move the hoisting mechanism from the raw material storage mechanism to the suspension chain conveyor or move the hoisting mechanism from the suspension chain conveyor to the finished product storage mechanism.

4. The metal sheet spraying device for mechanical manufacturing according to claim 1, wherein, The cross bar frame includes a cross bar fixed at the lower end of the moving component. Sliding frames are slidably sleeved on both sides of the cross bar. Bolts are threadedly connected to the sliding frames. The two hanging components are respectively fixed to the two sliding frames.

5. The metal sheet spraying device for mechanical manufacturing according to claim 1, characterized in that, The hanging component further includes a mounting seat installed on the cross bar frame. The power component includes a second motor fixed to the mounting seat. The output end of the second motor is connected with a rotating shaft rotatably installed on the mounting seat. Two movable gears are rotatably installed on the rotating shaft. Two arc-shaped bars are slidably arranged on the mounting seat, and the sliding direction of the arc-shaped bars is along their radian direction. The two arc-shaped bars are respectively located on both sides of the mounting seat. The lower end of one of the arc-shaped bars is slidably installed with a first support rod, and the first support rod extends to the outside of the corresponding arc-shaped bar. A spring is arranged inside the first support rod. The lower end of the other arc-shaped bar is fixed with a second support rod, and the metal plate is initially mounted on the first support rod; arc-shaped racks are arranged at the upper ends of the two arc-shaped bars, and the two arc-shaped racks are respectively meshed and connected with two movable gears; A coupling member is slidably arranged on the rotating shaft along its axial direction. By sliding the coupling member, it is circumferentially coupled with one of the movable gears, so as to drive the corresponding movable gear to rotate through the rotating shaft. The corresponding arc-shaped bar rotates downward to be hooked with the metal plate, and the coupling member is pushed and slid by a pushing component.

6. The metal sheet spraying device for mechanical manufacturing according to claim 5, characterized in that, A long chute is arranged on the rotating shaft along its axial direction. The coupling member is slidably installed in the long chute. A plurality of annular grooves and straight grooves arranged along its axial direction are arranged on the inner side wall of the movable gear. The plurality of annular grooves form a plurality of convex ring parts on the inner wall of the movable gear; The coupling member includes a slide bar slidably arranged in the long chute. Outer blocks are fixed at both ends of the slide bar. Two groups of protruding parts are arranged on the slide bar. One group of the protruding parts is axially butted with a plurality of annular grooves on the corresponding movable gear, and the other group of the protruding parts is axially butted with a plurality of convex ring parts on the corresponding movable gear. The connection state between the coupling member and the two movable gears is switched by a pushing component.

7. The metal sheet spraying device for mechanical manufacturing according to claim 5, characterized in that, The pushing component includes a reset rod installed at the upper end of the arc-shaped bar through a torsion spring seat and a guiding member fixed to the side wall of the mounting seat through a bracket. The guiding member is arranged at an angle with the arc-shaped bar. One end of it extends to the axial inner side of the arc-shaped bar, and the other end extends to the axial outer side of the arc-shaped bar; The guiding member includes a guiding rod fixed to the bracket and a one-way rotating rod installed at the inner end of the guiding rod through a torsion spring.

8. The metal sheet spraying device for mechanical manufacturing according to claim 5, characterized in that, An abutting block is fixed to the side of the arc-shaped bar, and the abutting block is located above the cross plate part of the mounting seat to limit the maximum downward sliding stroke of the arc-shaped bar.

9. The metal sheet spraying device for mechanical manufacturing according to claim 1, characterized in that, The spraying mechanism includes a vertical electric sliding table and a nozzle installed on the moving end of the vertical electric sliding table, and the nozzle is connected to an external paint supply device through a pipeline.

10. A spraying process using the metal sheet spraying device for mechanical manufacturing according to any one of claims 1-9, characterized in that, It includes the following steps: Step 1, Preparation work: Hang a plurality of metal plates to be sprayed on the raw material storage mechanism in sequence through the hoisting mechanism, specifically: the metal plates are hung on the first support rods, and the raw material storage mechanism and the finished product storage mechanism are respectively moved to the corresponding positions; Step 2, Move the metal plate: Operate the moving component to move the metal plate mounted with the hoisting mechanism to the first jig of the suspended chain conveyor, and the metal plate is transported by the suspended chain conveyor; Step 3, First spraying: Start the first spraying mechanism to spray the back of the metal plate in the mounting direction; Step 4. Change the mounting surface: Drive the power assembly to drive the arc bar fixing the second support rod to turn downward until the second support rod pushes against and contracts the first support rod, that is, the second support rod bears the weight of the metal plate, and complete the replacement of one side for mounting; Step 5. Second spraying: Start the second spraying mechanism to perform spraying operations on the other side of the metal plate; Step 6. Move to the finished product storage mechanism: When the metal plate that has completed the spraying operation moves to correspond to the finished product storage mechanism, the metal plate mounted with the hoisting mechanism is moved to the second hanger tooling of the finished product storage mechanism by operating the moving assembly.

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