Automatic spraying device and method for sheet metal parts

Abstract

The invention relates to the technical field of sheet metal part machining devices, and provides an automatic sheet metal part spraying device and method.The spraying device comprises a spraying room, a conveying line, a lifting appliance, a spraying gun, a mounting base, a lifting frame and a driving part, a cavity used for spraying sheet metal parts is formed in the spraying room, the conveying line is horizontally arranged, and the lifting appliance is arranged on the conveying line; the lifting tools are arranged on the conveying line, penetrate through the spraying room, are arranged on the conveying line, are distributed in the conveying direction of the conveying line at intervals and are used for lifting sheet metal parts; a strip-shaped hole is formed in the side wall of the spraying room in the height direction in a penetrating mode, and the spraying gun penetrates through the strip-shaped hole and is arranged in a lifting mode. The mounting base is located outside the spraying room, and the spraying gun is arranged on the mounting base; the lifting frame is arranged outside the spraying room in a lifting manner, and the mounting seat is arranged on the lifting frame; and the driving piece is used for controlling the lifting frame to move up and down. The spray gun has the effect of conveniently adjusting the vertical height of the spray gun.

Description

Technical Field

[0001] This application relates to the technical field of sheet metal part processing devices, and in particular to an automatic spraying device and method for sheet metal parts. Background Art

[0002] Sheet metal is a comprehensive cold processing technology for thin metal sheets (usually below 6 mm), including shearing, riveting, punching, cutting, folding, splicing, and forming (such as automobile bodies), etc. Its remarkable feature is that the thickness of the same part is consistent. The products processed by the sheet metal industry are called sheet metal parts, and the sheet metal parts referred to in different industries are generally different, and are mostly used for different parts during assembly.

[0003] After the sheet metal processing is completed, it is necessary to spray the sheet metal material to protect the surface of the metal plate and prevent the surface of the metal plate from oxidation and corrosion. Among them, electrostatic spraying of sheet metal parts is a widely used coating technology, which uses the electrostatic principle to evenly attach powder or liquid paint to the surface of metal workpieces. This technology not only improves the use efficiency of the paint, but also can provide a more uniform and higher-quality coating. The sheet metal part coating can prevent the metal from contacting with moisture and oxygen in the air, thereby slowing down the rusting process, and can also improve the aesthetics, wear resistance, and high temperature resistance.

[0004] At present, the spraying of sheet metal parts is either carried out by manually holding a spraying device or placed in a spraying room for spraying. Manual spraying is not only time-consuming and laborious, but also the spraying is not uniform enough, the spraying quality is poor, and it will also cause greater pollution and harm to the operators.

[0005] As for the method of hanging sheet metal parts in a spraying room for spraying, it is usually to use a hanging part to cooperate with the through holes on the sheet metal parts to hang the sheet metal parts and send them into the spraying room for automatic spraying. This spraying method has the advantages of high automation degree and less manual demand. However, the height position of the spray gun in the spraying room is mostly fixed and cannot be adjusted accordingly. When spraying sheet metal parts of different lengths, there are certain limitations, so it needs to be improved. Summary of the Invention

[0006] In order to facilitate the adjustment of the vertical height of the spray gun and improve the practicality of production, this application provides an automatic spraying device for sheet metal parts.

[0007] In the first aspect, an automatic spraying device for sheet metal parts provided by this application adopts the following technical solutions: An automatic spraying device for sheet metal parts, comprising a spraying chamber, a conveying line, a lifting fixture, a spray gun, a mounting seat, a lifting frame and a driving member. An inner cavity for spraying the sheet metal parts is provided inside the spraying chamber. The conveying line is horizontally arranged and penetrates through the spraying chamber. The lifting fixture is arranged on the conveying line and is spaced along the conveying direction of the conveying line. The lifting fixture is used for lifting the sheet metal parts.

[0008] By adopting the above technical solution, during production, the staff controls the up and down movement of the lifting frame and the mounting seat according to the length specification of the sheet metal parts to be sprayed, drives the spray gun to move up and down along the strip-shaped hole, and realizes changing the vertical distance between the spray gun and the conveying line.

[0009] Then, the sheet metal parts are successively hung on the lifting fixture. The conveying line drives the sheet metal parts to successively pass through the inlet end of the spraying chamber. The spray gun performs spraying operations on the sheet metal parts, and sprays the powder onto the outer surface of the sheet metal parts. After spraying, the sheet metal parts are conveyed out from the outlet end of the spraying chamber, and the staff removes the sprayed sheet metal parts from the lifting fixture.

[0010] Preferably, a plurality of strip-shaped holes are arranged in parallel, and a plurality of spray guns are provided. Each spray gun respectively passes through each strip-shaped hole.

[0011] By adopting the above technical solution, multiple spray guns are jointly used to spray the sheet metal parts, so as to improve the production efficiency and spraying effect.

[0012] Preferably, the lifting frame comprises a first vertical rod, a second vertical rod, a first inclined rod and a second inclined rod. The first inclined rod and the second inclined rod are connected to each other and symmetrically arranged. The first vertical rod is vertically arranged and is connected to the end of the first inclined rod far away from the second inclined rod. The second vertical rod is parallel to the first vertical rod and is connected to the end of the second inclined rod far away from the first inclined rod. The first vertical rod and the second vertical rod are respectively located on both sides of the spraying chamber, and both are connected with the mounting seat. The driving member is a jacking cylinder. The piston rod of the jacking cylinder is arranged at the connection of the first inclined rod and the second inclined rod. The jacking cylinder is provided with a stroke control mechanism.

[0013] By adopting the above technical solution, the jacking cylinder is equipped with a stroke control mechanism. The stroke control mechanism can control the piston rod of the cylinder to stop at a predetermined position, realize precise mechanical actions (such as clamping, pushing, jacking, etc.), and can provide continuous, stable and reliable pressure. Typical types of stroke control mechanisms include but are not limited to mechanical stoppers, magnetic switches plus solenoid valves, displacement sensors plus controllers. These belong to existing technical means and will not be elaborated here.

[0014] The lifting cylinder controls the lifting frame to move up and down in the vertical direction. Spray guns are installed on both the first vertical rod and the second vertical rod, so that there are spray guns on both sides of the sheet metal parts on the conveyor line, increasing the contact area between the powder and the sheet metal parts, so that the sheet metal parts can be sprayed more comprehensively and thoroughly.

[0015] Preferably, it further includes a bracket and a supporting wheel. The bracket is arranged on the outer side wall of the spraying room. The supporting wheel is rotatably connected to the bracket, and the supporting wheel is used to be tangent to the first vertical rod and the second vertical rod.

[0016] By adopting the above technical solution, when the lifting cylinder controls the lifting frame to move up and down, the first vertical rod and the second vertical rod move in a straight line. The presence of the supporting wheel can guide the first vertical rod and the second vertical rod, improving the stability of their movement. At the same time, the rolling friction between the supporting wheel and the two vertical rods can reduce the sliding friction force.

[0017] Preferably, it further includes an adjusting component. The mounting seat is rotatably connected to the first vertical rod and the second vertical rod. The adjusting component is connected to both the first vertical rod and the second vertical rod. The adjusting component is used to drive the mounting seat and the spray gun to rotate, and the rotation path of the spray gun is within the strip-shaped hole; The adjusting component includes a first cylinder and a push block. The mounting seat is connected to the lifting frame through a torsion spring. The first cylinder is arranged on the lifting frame. The push block is connected to the piston rod of the first cylinder and is simultaneously slidably connected to the mounting seat; the first cylinder is used to drive the push block to move vertically up and down, and the movement of the push block is used to drive the rotation of the mounting seat.

[0018] By adopting the above technical solution, the adjusting component can adjust the angle of the mounting seat, and then change the angle orientation of the spray gun, so that the spray gun can better spray the sheet metal parts, improving the practicability.

[0019] During adjustment, the first cylinder is used to control the push block to move in the vertical direction. The movement of the push block acts on the mounting seat, thereby driving the mounting seat to rotate, causing the torsion spring on the mounting seat to undergo elastic deformation. The rotation of the mounting seat directly drives the spray gun to rotate, thereby changing the angle of the spray gun relative to the spreader.

[0020] Preferably, the push block is in the shape of a right trapezoid, the mounting seat is in the shape of a sector, the central angle of the mounting seat is connected to the lifting frame. A universal ball is connected to a corner of the push block. A rolling groove is formed on a flat surface of the mounting seat, and the universal ball is slidably connected to the rolling groove. The spray gun is arranged on the other flat surface of the mounting seat.

[0021] By adopting the above technical solution, when the push block is driven by the first cylinder to move, the universal ball will move along the rolling groove, thereby driving the mounting seat to rotate. The cooperation of the universal ball and the rolling groove can improve the stability of the connection between the push block and the mounting seat. The length of the path that the universal ball pushes from one end of the mounting seat to the other end determines the angular range that the mounting seat can rotate.

[0022] Preferably, it also includes a recovery component, which is arranged at the bottom of the spray room and below the spray gun, and is used to recover the powder sprayed by the spray gun.

[0023] By adopting the above technical solution, the recovery component can recover the powder sprayed by the spray gun, realize recycling and reduce waste.

[0024] Preferably, the recycling assembly includes a guide plate, a collection box, a second cylinder, a rack, a gear, a connecting wheel and a cam; The guide plate is arranged to be tilted downward and rotatably connected to the inner wall of the spraying room. The movement track of the guide plate is an arc. The guide plate and one side of the spraying room form a receiving cavity for storing powder. The collecting box is located below the accommodating chamber and is provided with an opening. A clearance hole for the collecting box to pass through is provided on the spraying room. The second cylinder is connected to the collecting box and is used to control the horizontal movement of the collecting box. The rack is connected to the collecting box, the gear is meshedly connected to the rack, and the connecting wheel is located above the gear and is transmission-connected to the gear. The cam is rotatably connected in the spray booth and is transmission-connected to the connecting wheel, and the cam is used to abut against the material guide plate; when the collecting box moves along the outside of the spray booth, the rack drives the gear to rotate, thereby driving the connecting wheel and the cam to rotate, and the material guide plate rotates, so that the accommodating cavity opens at one end close to the collecting box.

[0025] By adopting the above technical solution, in the initial state, the long axis of the cam abuts against the guide plate, and the end of the guide plate close to the collection box and the inner wall of the spray room form a receiving cavity, and the cross section of the receiving cavity gradually decreases towards the bottom of the spray room. At this time, the opening of the receiving cavity close to the collection box is not opened, and the powder sprayed by the spray gun will be stored in the receiving cavity.

[0026] When the second cylinder controls the collection box to move horizontally along the outside of the spray booth, the gear follows the linear movement, driving the gear to rotate. Under the action of the connecting wheel, the cam also starts to rotate, so that the long axis of the cam no longer abuts against the guide plate. Under the action of the guide plate's own gravity and the pressure of the powder, the guide plate starts to rotate. At this time, the opening of the accommodating cavity close to the collection box will open, and the powder will fall into the collection box.

[0027] As the collection box moves outwards continuously, the opening of the accommodation cavity also increases accordingly, so that the powder can better fall into the collection box. Without the need for the staff to enter the spraying booth, they can use the powder suction pump and the delivery pipe outside the spraying booth to return the powder in the collection box to the required place.

[0028] Preferably, it further includes a bellows cover. The bellows cover is arranged at the strip-shaped hole, and the telescopic direction is the same as the length direction of the strip-shaped hole. The spray gun passes through the bellows cover and is connected to the bellows cover.

[0029] By adopting the above technical solution, the bellows cover has a blocking effect, restricting the powder from floating from the inside of the spraying booth to the outside. At the same time, the bellows cover itself has corresponding elasticity. When the spray gun adjusts the vertical height, the bellows cover can also make an adaptive deformation to ensure the effect of blocking the powder.

[0030] In a second aspect, the present application also provides an automatic spraying method for sheet metal parts. The automatic spraying device for sheet metal parts with the above-mentioned entire structure is used to spray the sheet metal parts, including the following steps: S1. According to the specifications of the sheet metal parts to be sprayed, the staff uses the driving member to control the lifting frame and the mounting seat to move up and down, and the spray gun moves up and down along the strip-shaped hole to change the vertical distance between the spray gun and the conveyor line; S2. Then, the sheet metal parts are successively hung on the hanging tool, and the conveyor line drives the sheet metal parts to pass through the spraying booth in sequence, and the spray gun performs spraying operations on the sheet metal parts; S3. After the spraying is completed, the staff removes the sprayed sheet metal parts from the hanging tool.

[0031] In summary, the present application includes at least one of the following beneficial technical effects: (1) By setting the mounting seat, the lifting frame and the driving member, during production, according to the length specifications of the sheet metal parts to be sprayed, the staff uses the driving member to control the lifting frame and the mounting seat to move up and down, driving the spray gun to move up and down along the strip-shaped hole, so as to change the vertical distance between the spray gun and the conveyor line.

[0032] (2) By setting the bracket and the supporting wheels, the presence of the supporting wheels can guide the first vertical rod and the second vertical rod, improving the stability of their movement.

[0033] (3) By setting the recycling component, the recycling component can recycle the powder sprayed by the spray gun, realizing recycling and reducing waste. Description of the Drawings

[0034] Figure 1 is a schematic structural diagram of the spraying device in an embodiment of the present application; Figure 2It is a side view of a spraying device in an embodiment of the present application; Figure 3 It is a schematic structural diagram of a part of the spraying device in an embodiment of the present application; Figure 4 It is a schematic structural diagram of the first vertical rod and the adjustment assembly in an embodiment of the present application; Figure 5 It is a schematic structural diagram of the spraying device in another embodiment of the present application; Figure 6 It is a side view of the spraying device in another embodiment of the present application.

[0035] Reference numerals: 1, spraying booth; 2, conveying line; 3, spreader; 4, spray gun; 5, mounting seat; 6, lifting frame; 61, first vertical rod; 62, second vertical rod; 63, first diagonal rod; 64, second diagonal rod; 7, driving member; 8, elongated hole; 9, bracket; 10, support wheel; 11, adjustment assembly; 111, first cylinder; 112, push block; 12, recovery assembly; 121, guide plate; 122, collection box; 123, second cylinder; 124, rack; 125, gear; 126, connecting wheel; 127, cam; 13, accommodation cavity; 14, relief hole; 15, universal ball; 16, rolling groove. Detailed implementation manners

[0036] Next, the technical solutions of the present application will be described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can be embodied in many different forms and is not limited to the embodiments described herein.

[0037] In the description of the present application, the reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above drawings are intended to cover non-exclusive inclusion.

[0039] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "attachment", "fixation" should be understood in a broad sense. For example, it can be a fixed connection; it can also be a detachable connection; or integrated; it can also be a mechanical connection. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0040] The following will describe in detail some embodiments of the present application with reference to the accompanying drawings. Without conflict, those skilled in the art can combine and combine different embodiments or examples represented in the present application and the features of different embodiments or examples.

[0041] An embodiment of the present application discloses an automatic spraying device for sheet metal parts. Refer to Figure 1 and Figure 2 , the spraying device includes a spraying booth 1, a conveying line 2, a hanger 3, a spray gun 4, a mounting seat 5, a lifting frame 6 and a driving member 7. The spraying booth 1 is fixedly installed on the ground. A cavity for spraying sheet metal parts is provided inside the spraying booth 1. The two ends of the spraying booth 1 are an inlet end and an outlet end respectively. The conveying line 2 is close to the top of the spraying booth 1. The conveying line 2 is arranged horizontally and penetrates through the spraying booth 1, that is, the conveying line 2 passes from the inlet end of the spraying booth 1 to the outlet end. The conveying line 2 is a mechanical device that realizes the directional transmission of materials, products or workpieces from one place to another through continuous or intermittent movement. Its specific structure belongs to the prior art and will not be elaborated here. The hanger 3 is installed on the conveying line 2 and is spaced along the length direction of the conveying line 2. The hanger 3 is used to lift the sheet metal parts.

[0042] A strip hole 8 is formed through the side wall of the spraying booth 1 along its height direction. The spray gun 4 can move up and down on the spraying booth 1 and horizontally passes through the strip hole 8. The mounting seat 5 is located outside the spraying booth 1 and can move up and down. The spray gun 4 is installed on the mounting seat 5. The muzzle of the spray gun 4 is inside the spraying booth 1 and is used to spray the sheet metal parts. The lifting frame 6 is arranged to be lifted and lowered outside the spraying booth 1. The mounting seat 5 is installed on the lifting frame 6; the driving member 7 is installed on the top of the spraying booth 1 and is connected to the lifting frame 6. The driving member 7 is used to control the lifting frame 6 to move vertically up and down.

[0043] During the production process, the staff needs to control the up and down movement of the lifting frame 6 and the mounting seat 5 through the driving member 7 according to the length specification of the sheet metal parts to be sprayed, and then drive the spray gun 4 to move up and down along the strip hole 8, so as to adjust the vertical distance between the spray gun 4 and the conveying line 2.

[0044] Subsequently, the sheet metal parts are hung on the lifting appliance 3 in sequence, and the conveyor line 2 drives the sheet metal parts to pass through the inlet end of the spraying booth 1 in turn. During this process, the spray gun 4 performs spraying operations on the sheet metal parts, evenly spraying the powder onto the outer surface of the sheet metal parts. After the spraying process is completed, the sheet metal parts are conveyed out from the outlet end of the spraying booth 1, and then the staff unloads the sheet metal parts that have completed spraying from the lifting appliance 3.

[0045] In some embodiments, a bellows cover (not shown in the figure) can also be installed at the strip-shaped hole 8. The telescopic direction of the bellows cover is the same as the length direction of the strip-shaped hole 8. The spray gun 4 passes through the bellows cover and is connected to the bellows cover. The bellows cover has a blocking effect, restricting the powder from floating from the inside of the spraying booth 1 to the outside, reducing pollution. When the spray gun 4 moves vertically, the bellows cover can make adaptive telescoping to ensure the sealing effect between the inside of the spraying booth 1 and the outside world.

[0046] Specifically, a number of parallel strip-shaped holes 8 are provided on the spraying booth 1, and the strip-shaped holes 8 are spaced apart along the conveying direction of the conveyor line 2. A plurality of mounting seats 5 are also arranged in parallel, and a spray gun 4 is installed on each mounting seat 5. Each spray gun 4 passes through each strip-shaped hole 8 respectively. The multiple spray guns 4 are jointly used to spray the sheet metal parts, increasing the spraying area and achieving improved production efficiency. In this embodiment, the lifting frame 6 includes a first vertical rod 61, a second vertical rod 62, a first inclined rod 63 and a second inclined rod 64. The first inclined rod 63 and the second inclined rod 64 are connected to each other and symmetrically arranged. The first inclined rod 63 and the second inclined rod 64 are in a V shape. The first vertical rod 61 is vertically arranged and fixedly connected to the end of the first inclined rod 63 away from the second inclined rod 64. The first vertical rod 61 is parallel to the length direction of the strip-shaped hole 8. The second vertical rod 62 is parallel to the first vertical rod 61 and fixedly connected to the end of the second inclined rod 64 away from the first inclined rod 63. The first vertical rod 61 and the second vertical rod 62 are respectively located on both sides of the spraying booth 1 and are both connected with mounting seats 5, so that there are spray guns 4 on both sides of the sheet metal parts on the conveyor line 2, thereby increasing the area of the region where the sheet metal parts receive spraying and enabling the sheet metal parts to be sprayed more comprehensively and thoroughly.

[0047] The driving member 7 is a jacking cylinder. The piston rod of the jacking cylinder is fixedly connected to the connection part of the first inclined rod 63 and the second inclined rod 64. The jacking cylinder is located below the two inclined rods. The jacking cylinder has a stroke control mechanism, which can control the piston rod of the cylinder to stop at a predetermined position, realizing precise mechanical actions (such as clamping, pushing, jacking, etc.), and can provide continuous, stable and reliable pressure. Typical types of stroke control mechanisms include but are not limited to mechanical stoppers, magnetic switches plus solenoid valves, displacement sensors plus controllers. These belong to existing technical means and will not be elaborated here.

[0048] Combined with Figure 3 and Figure 4, wherein, a bracket 9 is also fixedly connected to the outer side wall of the spraying booth 1. The number of brackets 9 is twice the number of lifting frames 6. The brackets 9 are symmetrically distributed on both sides of the spraying booth 1 and are respectively close to the first vertical rod 61 and the second vertical rod 62. A support wheel 10 is rotatably connected to each bracket 9. The support wheel 10 is used to be tangent to the first vertical rod 61 and the second vertical rod 62. When the jacking cylinder controls the lifting frame 6 to move up and down, the first vertical rod 61 and the second vertical rod 62 perform linear motion. The existence of the support wheel 10 can guide the first vertical rod 61 and the second vertical rod 62 and improve the stability of their movement.

[0049] In some embodiments, the mounting seat 5 is rotatably connected to the first vertical rod 61 and the second vertical rod 62. Adjusting components 11 are installed on both the first vertical rod 61 and the second vertical rod 62. The adjusting components 11 are used to drive the mounting seat 5 and the spray gun 4 to rotate. The rotation path of the spray gun 4 is within the range of the strip-shaped hole 8. The adjusting components 11 can adjust the angle of the mounting seat 5, thereby changing the angle orientation of the spray gun 4, so that the spray gun 4 can better spray the sheet metal parts and improve the practicability.

[0050] The adjusting component 11 includes a first cylinder 111 and a push block 112. The mounting seat 5 is rotatably connected to the lifting frame 6 through a torsion spring. The rotation axis of the mounting seat 5 is parallel to the conveying direction of the conveying line 2. The first cylinder 111 is installed on the lifting frame 6. The push block 112 is connected to the piston rod of the first cylinder 111 and moves up and down in the vertical direction. At the same time, one end of the push block 112 is also slidably connected to the mounting seat 5. In this embodiment, the push block 112 is in the shape of a right trapezoid, and the mounting seat 5 is in the shape of a sector. The central angle of the mounting seat 5 is rotationally connected to the first vertical rod 61 (or the second vertical rod 62). A universal ball 15 is connected to one corner (acute angle, non-right angle) of the push block 112. A rolling groove 16 is formed on a flat surface of the mounting seat 5. The rolling groove 16 extends along the radial direction of the mounting seat 5. The universal ball 15 is slidably connected in the rolling groove 16. Among them, the mounting seat 5 can also be in the shape of an isosceles triangle. The first cylinder 111 is used to drive the push block 112 to move vertically up and down. The movement of the push block 112 is used to drive the rotation of the mounting seat 5. The piston rod of the first cylinder 111 also has a stroke control mechanism.

[0051] During adjustment, the first cylinder 111 is used to control the push block 112 to move in the vertical direction. At this time, the universal ball 15 will move along the rolling groove 16, thereby driving the mounting seat 5 to rotate and causing the torsion spring on the mounting seat 5 to undergo elastic deformation. The rotation of the mounting seat 5 directly drives the spray gun 4 to rotate, thereby changing the angle of the spray gun 4 relative to the spreader 3. Among them, the length (i.e., the radius) of the path of the universal ball 15 pushed from one end of the mounting seat 5 to the other end determines the angle range that the mounting seat 5 can rotate.

[0052] Refer to Figure 5 and Figure 6In addition, in some embodiments, the spray booth 1 is also equipped with a recovery component 12, which is located below the spray gun 4 and is used to recover the solid powder sprayed by the spray gun 4, so as to realize the recycling of the spray powder and reduce waste. The recovery component 12 includes a guide plate 121, a collection box 122, a second cylinder 123, a rack 124, a gear 125, a connecting wheel 126 and a cam 127. The guide plate 121 is tilted downward and rotatably connected to the inner wall of the spray booth 1. The rotating shaft of the guide plate 121 is parallel to the conveying direction of the conveyor line 2, so that the movement trajectory of the guide plate 121 is an arc. A receiving chamber 13 is formed on one side of the guide plate 121 and the spray booth 1, and the receiving chamber 13 is used to store powder.

[0053] The collecting box 122 is located below the accommodating chamber 13 and is open. A clearance hole 14 is provided on the side wall of the spray booth 1 for the collecting box 122 to pass through. The collecting box 122 is used to receive the powder in the accommodating chamber 13. The second cylinder 123 is installed on the spray booth 1, and the piston rod is connected to the collecting box 122. The second cylinder 123 is used to control the horizontal movement of the collecting box 122. The moving direction of the collecting box 122 is parallel to the direction of the spray gun 4.

[0054] The rack 124 is arranged horizontally and connected to the collecting box 122. The rack 124 is located on the side of the spray booth 1 away from the clearance hole 14 and passes through the spray booth 1. The gear 125 is meshedly connected to the rack 124. The connecting wheel 126 is located above the gear 125 and is connected to the gear 125 through a belt drive or a chain drive. The cam 127 is rotatably connected in the spray booth 1 and is connected to the connecting wheel 126. The cam 127 is used to abut against the guide plate 121.

[0055] In the initial state, the long axis of the cam 127 abuts against the guide plate 121, and the end of the guide plate 121 close to the collecting box 122 and the inner wall of the spray booth 1 form a receiving chamber 13, and the cross section of the receiving chamber 13 gradually decreases along the bottom of the spray booth 1. At this time, the opening of the receiving chamber 13 close to the collecting box 122 is not opened, and the powder sprayed by the spray gun 4 will be stored in the receiving chamber 13.

[0056] When the second cylinder 123 controls the collecting box 122 to move horizontally along the outside of the spray booth 1, the gear 125 moves linearly following the collecting box 122, thereby driving the gear 125 to rotate. Under the action of the connecting wheel 126, the cam 127 also starts to rotate, so that the long axis of the cam 127 no longer abuts against the guide plate 121. Under the action of the gravity of the guide plate 121 and the pressure of the powder, the guide plate 121 starts to rotate in an arc. At this time, the opening of the accommodating chamber 13 close to the collecting box 122 will open, and the powder can fall from top to bottom into the collecting box 122.

[0057] As the collection box 122 continuously moves outwards, the opening of the accommodation cavity 13 also increases accordingly, so that the powder can better fall into the collection box 122. Without the need for the staff to enter the spraying chamber 1, outside the spraying chamber 1, the powder in the collection box 122 can be refluxed to the required place by using the powder pumping pump and the conveying pipe. It should be noted that the collection box 122 does not need to completely extend out of the spraying chamber 1, so as to ensure that the side of the blanking plate close to the collection box 122 can fall within the opening range of the collection box 122 to receive the powder falling from the accommodation cavity 13.

[0058] The implementation principle of an automatic spraying device for sheet metal parts in an embodiment of the present application is as follows: During production, according to the length specification of the sheet metal part to be sprayed, the staff uses the driving member 7 to control the lifting frame 6 and the mounting seat 5 to move up and down, driving the spray gun 4 to move up and down along the strip-shaped hole 8, so as to change the vertical distance between the spray gun 4 and the conveying line 2.

[0059] Then, the sheet metal parts are successively hung on the hanging tool 3, and the conveying line 2 drives the sheet metal parts to successively pass through the inlet end of the spraying chamber 1, and the spray gun 4 performs a spraying operation on the sheet metal parts, spraying the powder onto the outer surface of the sheet metal parts. After the spraying is completed, the sheet metal parts are conveyed out from the outlet end of the spraying chamber 1, and the staff removes the sprayed sheet metal parts from the hanging tool 3.

[0060] Based on the above embodiments, an embodiment of the present application also provides an automatic spraying method for sheet metal parts. Using the spraying device with the above all structures to spray the sheet metal parts, it includes the following steps: S1. The staff needs to accurately control the up and down displacement amplitude of the lifting frame 6 and the mounting seat 5 through the driving member 7 according to the specific specification parameters of the sheet metal part to be sprayed, so that the spray gun 4 moves vertically along the track of the strip-shaped hole 8 to adjust, thereby changing the vertical distance between the spray gun 4 and the conveying line 2; S2. Subsequently, the sheet metal parts are sequentially and regularly hung on the hanging tool 3, and the conveying line 2 drives the sheet metal parts to pass through the spraying operation area at a constant speed in sequence. During this process, the spray gun 4 performs a standardized spraying operation on the sheet metal parts; S3. After the spraying process is completed, the staff safely disassembles and removes the sprayed sheet metal parts from the hanging tool 3 according to the operating procedures.

[0061] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An automatic spraying device for sheet metal parts, characterized in that: The invention comprises a spraying room (1), a conveyor line (2), a sling (3), a spray gun (4), a mounting seat (5), a lifting frame (6) and a driving member (7); the spraying room (1) is provided with a cavity for spraying sheet metal parts; the conveyor line (2) is arranged horizontally and runs through the spraying room (1); the sling (3) is arranged on the conveyor line (2) and is distributed at intervals along the conveying direction of the conveyor line (2); the sling (3) is used to suspend the sheet metal parts; A strip hole (8) is formed on the side wall of the spraying room (1) in the height direction, and the spray gun (4) passes through the strip hole (8) and is arranged to be lifted; the mounting seat (5) is located outside the spraying room (1), and the spray gun (4) is arranged on the mounting seat (5), and the muzzle is located inside the spraying room (1); the lifting frame (6) is arranged to be lifted outside the spraying room (1), and the mounting seat (5) is arranged on the lifting frame (6); the driving member (7) is connected to the lifting frame (6) and is used to control the lifting frame (6) to move up and down.

2. The automatic spraying device for sheet metal parts according to claim 1, characterized in that: The strip-shaped holes (8) are arranged in parallel in a plurality of rows, and the spray guns (4) are arranged in a plurality of rows, and each of the spray guns (4) passes through each of the strip-shaped holes (8).

3. The automatic spraying device for sheet metal parts according to claim 1, characterized in that: The lifting frame (6) comprises a first vertical rod (61), a second vertical rod (62), a first oblique rod (63) and a second oblique rod (64); the first oblique rod (63) and the second oblique rod (64) are connected to each other and symmetrically arranged; the first vertical rod (61) is arranged vertically and connected to an end of the first oblique rod (63) away from the second oblique rod (64); the second vertical rod (62) is parallel to the first vertical rod (61) and connected to an end of the second oblique rod (64) away from the first oblique rod (63); the first vertical rod (61) and the second vertical rod (62) are respectively located on two sides of the spray booth (1) and are both connected to the mounting seat (5); The driving member (7) is a lifting cylinder, the piston rod of the lifting cylinder is arranged at the connection between the first inclined rod (63) and the second inclined rod (64), and the lifting cylinder has a stroke control mechanism.

4. The automatic spraying device for sheet metal parts according to claim 3, characterized in that: It also includes a bracket (9) and a support wheel (10), wherein the bracket (9) is arranged on the outer wall of the spray booth (1), and the support wheel (10) is rotatably connected to the bracket (9), and the support wheel (10) is used to be tangent to the first vertical rod (61) and the second vertical rod (62).

5. The automatic spraying device for sheet metal parts according to claim 3, characterized in that: It also includes an adjustment component (11), the mounting seat (5) is rotatably connected to the first vertical rod (61) and the second vertical rod (62), the first vertical rod (61) and the second vertical rod (62) are both connected to the adjustment component (11), the adjustment component (11) is used to drive the mounting seat (5) and the spray gun (4) to rotate, and the rotation path of the spray gun (4) is within the strip-shaped hole (8); The adjusting assembly (11) comprises a first cylinder (111) and a push block (112); the mounting seat (5) is connected to the lifting frame (6) via a torsion spring; the first cylinder (111) is arranged on the lifting frame (6); the push block (112) is connected to a piston rod of the first cylinder (111) and is slidably connected to the mounting seat (5); the first cylinder (111) is used to drive the push block (112) to move vertically up and down; the movement of the push block (112) is used to drive the mounting seat (5) to rotate.

6. The automatic spraying device for sheet metal parts according to claim 5, characterized in that: The push block (112) is in the shape of a right-angled trapezoid, the mounting seat (5) is in the shape of a fan, the central angle of the mounting seat (5) is connected to the lifting frame (6), a universal ball (15) is connected to one corner of the push block (112), a rolling groove (16) is provided on a plane of the mounting seat (5), the universal ball (15) is slidably connected in the rolling groove (16), and the spray gun (4) is arranged on another plane of the mounting seat (5).

7. The automatic spraying device for sheet metal parts according to claim 1, characterized in that: It also comprises a recovery component (12), wherein the recovery component (12) is arranged at the bottom of the spray booth (1) and below the spray gun (4), and the recovery component (12) is used to recover the powder sprayed by the spray gun (4).

8. The automatic spraying device for sheet metal parts according to claim 7, characterized in that: The recovery assembly (12) comprises a material guide plate (121), a collection box (122), a second cylinder (123), a rack (124), a gear (125), a connecting wheel (126) and a cam (127); The guide plate (121) is arranged to be tilted downward and is rotatably connected to the inner wall of the spray booth (1); the movement trajectory of the guide plate (121) is an arc; the guide plate (121) and one side of the spray booth (1) form a receiving cavity (13) for storing powder; The collecting box (122) is located below the accommodating chamber (13) and is provided with an opening. The spray booth (1) is provided with a clearance hole (14) for the collecting box (122) to pass through. The second cylinder (123) is connected to the collecting box (122) and is used to control the horizontal movement of the collecting box (122). The rack (124) is connected to the collecting box (122). The gear (125) is meshedly connected to the rack (124). The connecting wheel (126) is located above the gear (125) and is drivingly connected to the gear (125). The cam (127) is rotatably connected to the spray booth (1) and is transmission-connected to the connecting wheel (126). The cam (127) is used to abut against the material guide plate (121). When the collection box (122) moves along the outside of the spray booth (1), the rack (124) drives the gear (125) to rotate, thereby driving the connecting wheel (126) and the cam (127) to rotate. The material guide plate (121) rotates, so that the end of the accommodating chamber (13) close to the collection box (122) opens.

9. The automatic spraying device for sheet metal parts according to claim 1, characterized in that: It also comprises an accordion cover, which is arranged at the strip-shaped hole (8) and has a telescopic direction that is the same as the length direction of the strip-shaped hole (8); the spray gun (4) passes through the accordion cover and is connected to the accordion cover.

10. A method for spraying a sheet metal part using the spraying device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. The staff uses the driving member (7) to control the lifting frame (6) and the mounting seat (5) to move up and down according to the specifications of the sheet metal to be sprayed, and the spray gun (4) moves up and down along the strip hole (8), thereby changing the vertical distance between the spray gun (4) and the conveyor line (2); S2, the sheet metal parts are then hung on the hanger (3) in sequence, the conveyor line (2) drives the sheet metal parts to pass through the spraying room (1) in sequence, and the spray gun (4) sprays the sheet metal parts; S3. After the spraying is completed, the staff removes the sprayed sheet metal part from the hanger (3).

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