An automatic painting production line for automobile bumpers

Abstract

The present invention discloses an automatic painting production line for automobile bumpers, which relates to the field of painting technology. A conveyor belt is provided inside the spray booth, a robotic arm is provided inside the spray booth, a paint spraying mechanism is provided at one end of the robotic arm, and the paint spraying mechanism includes a cluster component for storing paint and adjusting the paint diffusion area and four wind control components. The present invention sets a cluster component to constrain the diffusion direction and area of ​​the paint by controlling the airflow. When painting the corners of the bumper, in order to control the paint to diffuse in one direction, the hollow blocks through which the airflow passes can be opened according to the position of the paint. When two hollow blocks in the same straight line are opened at the same time, an anti-splashing wind wall will be formed on the side of the diffused paint, which can block the diffusion of the paint, thereby ensuring that the paint after spraying will not be thickened by re-spraying, and can ensure that the paint surface of the painted bumper will not crack or bubble.

Description

Technical Field

[0001] The present invention relates to the technical field of coating, in particular to an automatic coating production line for automobile bumpers. Background Art

[0002] The automatic painting production line for automobile bumpers is mainly a process line for painting the surface of automobiles. The unpainted automobile bumpers are placed on the designated painting rack, and then the bumpers are sent to the painting room by the conveyor belt. The painting equipment then paints the surface of the bumpers. The entire painting production line is mainly composed of mechanical equipment for painting and bumper support equipment. The automobile bumpers that need to be processed are then sent to the designated location through the conveyor device.

[0003] When the surface of a car bumper is spray-painted in an automatic painting production line for car bumpers, because the shape of the bumper is an irregular arc, the edge corners of the bumper need to be touched up with paint after the surface of the bumper is painted. When painting the corners of the bumper, the diffused paint will cover the paint that has been sprayed once, thereby causing the already sprayed paint surface to thicken, increasing the risk of paint bubbles and cracks during subsequent paint baking. Therefore, the present application provides an automatic painting production line for car bumpers to meet the needs. Summary of the Invention

[0004] The purpose of this application is to provide an automatic painting production line for automobile bumpers, which can effectively solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present application provides the following technical solutions: an automatic painting production line for automobile bumpers, comprising a spray booth, a conveyor belt disposed inside the spray booth, a robotic arm disposed inside the spray booth, a paint spraying mechanism disposed at one end of the robotic arm, the paint spraying mechanism comprising a cluster assembly for storing paint and adjusting the paint diffusion area, and four wind control assemblies for adjusting the paint diffusion angle;

[0006] A support assembly is provided on the conveyor belt inside the spray booth, and a bumper is placed on the support assembly.

[0007] Preferably, the cluster assembly includes a paint storage tank installed inside the robotic arm, the outer surface of the paint storage tank is provided with a plurality of wirings distributed in a circular array, the bottom of the paint storage tank is provided with a paint spray head, the lower part of the outer surface of the paint storage tank is provided with a paint spray cover, and the outer surface of the paint spray cover is provided with a ventilation groove connected to the interior thereof.

[0008] Preferably, the wind control component includes a mounting piece installed inside the ventilation groove, the inner wall of the mounting piece is provided with a fixing groove, the mounting piece is communicated with the interior of the paint hood through the fixing groove, the mounting piece is in the shape of a right-angled letter "L", and the top of the mounting piece is connected to the wiring.

[0009] Preferably, two air-regulating parts spliced ​​in the shape of the letter "L" are provided inside the mounting part, air vents are provided on opposite surfaces of the two air-regulating parts, and sealing sleeves are provided inside the two air vents, hollow blocks are provided inside the two air-regulating parts, placement grooves are provided on the outer surfaces of the two hollow blocks, and partitions are provided inside the two placement grooves, partitions are slidably installed inside the two partitions, a number of plastic springs are provided on the tops of the two partitions, and electromagnetic blocks are commonly provided on the upper parts of the several plastic springs.

[0010] Preferably, the electromagnetic block is fixedly mounted on the top of the inner wall of the gas regulating component, and the electromagnetic block is electrically connected to the wiring.

[0011] Preferably, the support assembly includes two support tubes arranged on the upper part of the conveyor belt, and two support frames are fixedly installed on the top of the two support tubes. A hollow tube is fixedly installed on the top of the two support frames, and a retraction rod is slidably installed inside the two hollow tubes. The outer surfaces of the two retraction rods are sleeved with springs, and one end of the two retraction rods is fixedly installed with a T-shaped arc plate, and the outer surfaces of the two T-shaped arc plates are sleeved with rubber sleeves. The outer surfaces of the two support frames are provided with support rods, and one end of the two support rods is rotatably connected with a push plate, and a spring plate is provided between the two push plates and the support rods.

[0012] Preferably, a rubber patch is provided on the outer surface of the abutment plate, and the abutment plate is in an arc shape.

[0013] Preferably, the T-shaped arc plate contacts the inner wall of the bumper through a rubber sleeve, and the contact plate contacts the lower part of the inner wall of the bumper.

[0014] In summary, the technical effects and advantages of the present invention are as follows:

[0015] 1. The present invention provides a clustering assembly that controls the airflow to restrict the direction and area of ​​paint diffusion. When painting the corners of a bumper, to control the paint diffusion in one direction, the hollow blocks through which airflow passes can be opened according to the paint location. When two hollow blocks in the same line are opened simultaneously, a splash-proof wind wall is formed on the side of the diffused paint, which can block the diffusion of paint and ensure that the paint after spraying will not be thickened by re-spraying. This can prevent cracks or bubbles in the painted bumper surface.

[0016] 2. The cluster assembly provided by the present invention has eight hollow blocks in total, and the eight hollow blocks are combined in a square shape to form a splash-proof wind wall in four directions, thereby reducing paint splashing onto the surface of the sprayed paint and causing paint defects. The angle of the wind wall can be adjusted according to the rotation angle of the robotic arm, and can adapt to bumper corners at different angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a partial three-dimensional structural diagram of an automatic painting production line for automobile bumpers;

[0019] Figure 2 Schematic diagram of the three-dimensional structure of the robotic arm;

[0020] Figure 3 It is a schematic diagram of the three-dimensional connection structure of the painting mechanism;

[0021] Figure 4 Schematic diagram of the three-dimensional connection structure of the cluster component;

[0022] Figure 5 It is a cross-sectional view of the three-dimensional connection structure of the cluster assembly;

[0023] Figure 6 This is a schematic diagram of the three-dimensional connection structure of the paint storage tank and the paint spray hood;

[0024] Figure 7 This is a schematic diagram of the three-dimensional connection structure of the wind control components;

[0025] Figure 8 Schematic diagram of the three-dimensional connection structure of the mounting parts;

[0026] Figure 9 It is a schematic diagram of the three-dimensional connection structure of the hollow block and the gas regulating component;

[0027] Figure 10 It is a schematic diagram of the three-dimensional connection structure of the gas regulating component;

[0028] Figure 11 A cross-sectional view of the three-dimensional connection structure of the wind control component;

[0029] Figure 12 Schematic diagram of the three-dimensional connection structure of the hollow block;

[0030] Figure 13Schematic diagram of the three-dimensional connection structure of the spacer tube and the hollow block;

[0031] Figure 14 Schematic diagram of the three-dimensional connection structure of the partition and the electromagnetic block;

[0032] Figure 15 It is a schematic diagram of the three-dimensional connection structure of the bumper and the support assembly;

[0033] Figure 16 Schematic diagram of the three-dimensional connection structure of the support assembly;

[0034] Figure 17 Schematic diagram of the three-dimensional connection structure of the support frame and the retractable rod;

[0035] Figure 18 It is a schematic diagram of the three-dimensional connection structure of the rubber sleeve and the support frame.

[0036] In the figure: 1. Spray booth; 2. Robotic arm; 3. Paint spraying mechanism; 31. Cluster assembly; 311. Paint spray head; 312. Paint hood; 313. Paint storage tank; 314. Wiring; 315. Vent; 32. Wind control assembly; 321. Mounting part; 322. Air regulating part; 323. Hollow block; 324. Fixing groove; 325. Vent; 326. Sealing sleeve; 327. Spacer; 328. Electromagnetic block; 329. Partition; 331. Plastic spring; 332. Placement groove; 4. Bumper; 5. Support assembly; 51. Support tube; 52. Support frame; 53. Hollow tube; 54. Support rod; 55. Spring; 56. Retraction rod; 57. Abutment plate; 58. T-shaped arc plate; 59. Spring plate; 50. Rubber sleeve. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] refer to Figure 1-18 The automatic painting production line for automobile bumpers shown in the figure includes a spray booth 1, a conveyor belt is provided inside the spray booth 1, a robotic arm 2 is provided inside the spray booth 1, and a paint spraying mechanism 3 is provided at one end of the robotic arm 2. The paint spraying mechanism 3 includes a cluster component 31 for storing paint and adjusting the paint diffusion area and four wind control components 32 for adjusting the paint diffusion angle;

[0039] A support assembly 5 is provided on the conveyor belt inside the spray booth 1 , and a bumper 4 is placed on the support assembly 5 .

[0040] It is worth noting that when painting the bumper 4, the bumper 4 needs to be placed on the support assembly 5 first, and then the conveyor belt transports the support assembly 5 into the spraying room 1, and the paint spraying mechanism 3 will spray the bumper 4 on the support assembly 5, so that the bumper 4 after spraying is not easy to rust and the service life of the bumper 4 is increased.

[0041] Furthermore, in order to facilitate the placement of the bumper 4, the following Figure 15-18 The support assembly 5 shown in the figure includes two support tubes 51 arranged on the upper part of the conveyor belt, and two support frames 52 are fixedly installed on the top of the two support tubes 51. A hollow tube 53 is fixedly installed on the top of the two support frames 52. A retraction rod 56 is slidably installed inside the two hollow tubes 53. The outer surfaces of the two retraction rods 56 are sleeved with springs 55. One end of the two retraction rods 56 is fixedly installed with a T-shaped arc plate 58, and the outer surfaces of the two T-shaped arc plates 58 are sleeved with rubber sleeves 50. The outer surfaces of the two support frames 52 are provided with support rods 54, and one end of the two support rods 54 is rotatably connected with a support plate 57. A spring plate 59 is provided between the two support plates 57 and the support rods 54.

[0042] It is worth noting that when spraying the bumper 4, the bumper 4 needs to be placed on the support assembly 5 first. When the bumper 4 is placed, the inner wall of the bumper 4 will squeeze the rubber sleeve 50, thereby pushing the retracted rod 56 to slide inside the hollow tube 53. The height of the retracted rod 56 is reduced, so that the position of the bumper 4 is tilted, which makes it easier to paint the bumper 4 later.

[0043] A rubber patch is provided on the outer surface of the abutment plate 57. The abutment plate 57 is in an arc shape. The T-shaped arc plate 58 contacts the inner wall of the bumper 4 through the rubber sleeve 50. The abutment plate 57 contacts the lower part of the inner wall of the bumper 4.

[0044] The T-shaped arc plate 58 is made of an elastic plate. When squeezed by the car bumper, the T-head end of the T-shaped arc plate 58 will be deformed and fit the inner wall of the car bumper, and the rubber sleeve 50 has a better anti-slip effect. The sliding retraction rod 56 will squeeze the spring 55 to contract, and then the user presses the car bumper to make the inner wall of the bumper 4 squeeze the plate 57 to rotate, and the spring plate 59 will apply a reaction force to the plate 57 to push the bumper 4, because the plate 57 and the T-shaped arc plate 58 both resist the inner wall of the bumper 4 and apply opposite forces, thereby fixing the bumper 4 between the plate 57 and the T-shaped arc plate 58.

[0045] Furthermore, in order to allow the paint to be evenly sprayed onto the bumper 4, the following Figure 3-6The cluster assembly 31 shown includes a paint storage tank 313 installed inside the robotic arm 2. The outer surface of the paint storage tank 313 is provided with a plurality of wirings 314 distributed in a circular array. A paint spray head 311 is provided at the bottom of the paint storage tank 313. A paint spray cover 312 is provided at the lower part of the outer surface of the paint storage tank 313. The outer surface of the paint spray cover 312 is provided with a ventilation groove 315 connected to the interior thereof.

[0046] It is worth noting that after the bumper 4 is placed as mentioned above, the bumper 4 is sent to the robotic arm 2 by the conveyor belt, and then the robotic arm 2 operates and waves the paint storage tank 313 according to the background program. Because the paint storage tank 313 is provided with an air pressure tube inside, when painting is needed, the paint is sprayed by air pressure to paint the bumper 4. When the paint passes through the paint spray head 311, the paint will be broken up into mist, so that the sprayed paint can evenly cover the surface of the bumper 4.

[0047] Furthermore, in order to prevent the diffused paint from being sprayed onto the paint that has been sprayed evenly, the following Figure 7-14 The wind control component 32 shown includes a mounting member 321 installed inside the ventilation groove 315. A fixing groove 324 is provided on the inner wall of the mounting member 321. The mounting member 321 communicates with the interior of the paint hood 312 through the fixing groove 324. The mounting member 321 is in the shape of a right-angled letter "L", and the top of the mounting member 321 is connected to the wiring 314.

[0048] Two air regulating parts 322 spliced ​​in the shape of the letter "L" are provided inside the mounting part 321. Ventilation holes 325 are provided on the opposite surfaces of the two air regulating parts 322, and a sealing sleeve 326 is provided inside the two vent holes 325. The sealing sleeve 326 is made of rubber and has good elasticity and sealing performance. In addition, the vent holes 325 can make the interiors of the two air regulating parts 322 the same, so that the air flow inside the paint spray cover 312 can be easily transferred into the hollow block 323. The interiors of the two air regulating parts 322 are provided with hollow blocks 323. The outer surfaces of the two hollow blocks 323 are provided with placement grooves 332, and the interiors of the two placement grooves 332 are provided with partitions 327. The interiors of the two partitions 327 are slidably installed with partitions 329. The tops of the two partitions 329 are provided with a plurality of plastic springs 331, and the upper parts of the plurality of plastic springs 331 are commonly provided with electromagnetic blocks 328.

[0049] It is worth noting that after the paint is dispersed and sprayed onto the surface of the bumper 4 in a mist form by the paint spray head 311, because the bumper 4 has an irregular shape and many corners, when the paint spray head 311 sprays paint on the edges and corners of the bumper 4, the paint diffused in a pointed cone will spread onto the paint already sprayed on the surface of the bumper 4;

[0050] The electromagnetic block 328 is fixedly mounted on the top of the inner wall of the gas regulating member 322 , and the electromagnetic block 328 is electrically connected to the wiring 314 ;

[0051] In order to prevent the bumper 4 from being over-painted due to multiple sprayings, the user can control the power supply of the electromagnetic block 328 to generate a magnetic force. When the electromagnetic block 328 is energized and has a magnetic force, it will attract the partition 329 and move it upward. When the partition 329 moves upward, it will also shrink the extrusion spring 331. When the partition 329 moves upward and slides out of the partition tube 327, the airflow ejected from the paint hood 312 will enter the hollow block 323 and finally be ejected from the hollow block 323. There are eight hollow blocks 323 in total, and The eight hollow blocks 323 are combined into a square. When the user is painting a corner, in order to control the paint to spread in one direction, the user can choose to open the hollow block 323 through which the airflow passes according to the position of the paint. When two hollow blocks 323 in the same straight line are opened at the same time, an anti-splash wind wall will be formed on the side of the diffused paint, which can block the diffusion of the paint, thereby ensuring that the paint after spraying will not be thickened by re-spraying, and can also prevent the paint surface from cracking or paint bubbles when the surface of the bumper 4 is subsequently baked.

[0052] The working principle of the present invention is as follows: when using the automatic painting production line for automobile bumpers, the automobile bumper that needs to be painted and rust-proofed is placed on the rubber sleeve 50, and then the automobile bumper is pressed to push the retracted rod 56 to slide inside the hollow tube 53 through the T-shaped arc plate 58. The T-shaped arc plate 58 is made of elastic plate. When squeezed by the automobile bumper, the T-shaped head end of the T-shaped arc plate 58 will deform and fit the inner wall of the automobile bumper. The rubber sleeve 50 has a good anti-slip effect, and the sliding retracted rod 56 will squeeze the spring 55 to retract. Then, the user presses the car bumper so that the inner wall of the bumper 4 squeezes the butt plate 57 to rotate, and the spring plate 59 will exert a reaction force on the butt plate 57 to push the bumper 4. Because the butt plate 57 and the T-shaped arc plate 58 both contact the inner wall of the bumper 4 and exert opposite forces, the bumper 4 is fixed between the butt plate 57 and the T-shaped arc plate 58. Because the bumper 4 has its own weight and the special fixing method makes the T-shaped arc plate 58 bear the entire weight of the bumper 4, squeezing the spring 55 to contract, so that the fixed and swinging bumper 4 is tilted;

[0053] When the bumper 4 is placed, the bumper 4 is sent to the robot arm 2 inside the spray booth 1 as the conveyor belt moves. The robot arm 2 moves according to the program set in the background, and then the air pressure tube and paint spray tube inserted into the paint storage tank 313 by the robot arm are used to control the paint spray head 311 to spray paint. When the paint spray head 311 sprays paint, the sprayed paint spreads in a cone shape and covers the surface of the bumper 4. When it is necessary to paint the corners of the bumper 4, in order to prevent the sprayed paint from spreading again to the paint that has been sprayed, the user can control the power supply of the control wiring 314 to make the electromagnetic block 328 have magnetic force. After the electromagnetic block 328 has magnetic force due to power supply, it will attract the partition 329 to move upward. When the partition 329 moves upward, it will also squeeze the plastic spring 331 to contract. When the partition 329 moves upward and slides out of the partition tube 327, the paint sprayer 311 will be removed from the spray booth 1. The airflow ejected from the cover 312 will enter the hollow block 323 and finally be ejected from the hollow block 323. There are a total of eight hollow blocks 323, and the eight hollow blocks 323 are combined in a square shape. When painting the corners of the bumper 4, in order to control the paint to diffuse in one direction, the hollow block 323 through which the airflow passes can be selected according to the position of the paint. When the two hollow blocks 323 in the same straight line are opened at the same time, a splash-proof wind wall will be formed on the side of the diffused paint, which can block the diffusion of the paint, thereby ensuring that the paint after spraying will not be thickened by re-spraying, and the vent hole 325 is used in conjunction with the sealing sleeve 326 to allow the interior of the two sets of air regulating parts 322 to communicate. By manipulating the electromagnetic block 328, the direction of the airflow through the hollow block 323 can be quickly controlled, which can achieve multi-directional blocking of the direction of paint diffusion.

[0054] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic painting production line for automobile bumpers, comprising a spray booth (1), wherein a conveyor belt is provided inside the spray booth (1), and characterized in that: A mechanical arm (2) is provided inside the spray booth (1), and a paint spraying mechanism (3) is provided at one end of the mechanical arm (2). The paint spraying mechanism (3) includes a cluster component (31) for storing paint and adjusting the paint diffusion area, and four wind control components (32) for adjusting the paint diffusion angle. A support assembly (5) is provided on the conveyor belt inside the spray booth (1), and a bumper (4) is placed on the support assembly (5); The cluster assembly (31) includes a paint storage tank (313) installed inside the robot arm (2), the outer surface of the paint storage tank (313) is provided with a plurality of wirings (314) distributed in a ring array, the bottom of the paint storage tank (313) is provided with a paint spray head (311), the lower part of the outer surface of the paint storage tank (313) is provided with a paint spray cover (312), and the outer surface of the paint spray cover (312) is provided with a ventilation groove (315) communicating with the interior thereof; The wind control assembly (32) includes a mounting member (321) mounted inside the ventilation groove (315), an inner wall of the mounting member (321) is provided with a fixing groove (324), the mounting member (321) is communicated with the interior of the paint hood (312) through the fixing groove (324), the mounting member (321) is in the shape of a right-angled letter "L", and the top of the mounting member (321) is connected to the wiring (314); Two air regulating parts (322) spliced ​​in the shape of the letter "L" are provided inside the mounting part (321), vent holes (325) are provided on opposite surfaces of the two air regulating parts (322), and sealing sleeves (326) are provided inside the two air regulating parts (322), hollow blocks (323) are provided inside the two air regulating parts (322), placement grooves (332) are provided on the outer surfaces of the two hollow blocks (323), and partitions (327) are provided inside the two placement grooves (332), partitions (329) are slidably installed inside the two partitions (327), a plurality of plastic springs (331) are provided on the tops of the two partitions (329), and an electromagnetic block (328) is provided on the upper parts of the plurality of plastic springs (331); The electromagnetic block (328) is fixedly mounted on the top of the inner wall of the gas regulating component (322), and the electromagnetic block (328) is electrically connected to the wiring (314).

2. The automatic painting production line for automobile bumpers according to claim 1, characterized in that: The support assembly (5) includes two support tubes (51) arranged on the upper part of the conveyor belt, two support frames (52) are fixedly installed on the top of the two support tubes (51), a hollow tube (53) is fixedly installed on the top of the two support frames (52), a retracting rod (56) is slidably installed inside the two hollow tubes (53), the outer surfaces of the two retracting rods (56) are sleeved with springs (55), one end of the two retracting rods (56) is fixedly installed with a T-shaped arc plate (58), and the outer surfaces of the two T-shaped arc plates (58) are sleeved with rubber sleeves (50), the outer surfaces of the two support frames (52) are provided with support rods (54), one end of the two support rods (54) is rotatably connected to a support plate (57), and a spring plate (59) is provided between the two support plates (57) and the support rods (54).

3. The automatic painting production line for automobile bumpers according to claim 2, characterized in that: The outer surface of the abutment plate (57) is provided with a rubber patch, and the abutment plate (57) is in an arc shape.

4. The automatic painting production line for automobile bumpers according to claim 3 is characterized in that: The T-shaped arc plate (58) contacts the inner wall of the bumper (4) through the rubber sleeve (50), and the contact plate (57) contacts the lower part of the inner wall of the bumper (4).

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