Automobile bumper spraying device

Abstract

The invention relates to the technical field of bumper spraying, in particular to an automobile bumper spraying device which comprises a spraying robot body and an atomization spray head device fixed to one end of the spraying robot body and further comprises two clamping induction mechanisms arranged above and below the atomization spray head device correspondingly. The clamping sensing mechanism comprises a translation guide roller used for making contact with the bumper and a pressure sensor used for sensing whether the clamping sensing mechanism is attached to the bumper or not. According to the automobile bumper spraying device, through the arrangement of the two sets of clamping induction mechanisms and the centering positioning mechanism, the two sets of clamping induction mechanisms and the centering positioning mechanism work cooperatively, it is ensured that a spraying opening of the atomization spraying head device directly faces the spraying face of a bumper before spraying, and a spraying head and the bumper are kept in the center; and the translation guide rollers roll in a manner of being attached to the surface of the bumper to prevent the bumper from deviating up and down, so that spraying inclination caused by deviation of the bumper in the spraying process is avoided, and meanwhile, the spraying robot is not influenced to horizontally and linearly move and spray along the bumper.

Description

Technical Field

[0001] The invention relates to the technical field of bumper spraying, and in particular to a vehicle bumper spraying device. Background Art

[0002] In the automobile manufacturing industry chain, the bumper is an important line of defense to ensure the safety of vehicles and passengers. It is also a key element to show the appearance style of the car. The quality of its spraying process is directly related to the overall quality and market competitiveness of the car. The commonly used spraying robot, with its highly flexible mechanical arm structure, can accurately simulate the complex movements of manual spraying and achieve efficient spraying of the bumper in all directions and at multiple angles.

[0003] At present, the strip suspension anti-collision bumper commonly used in trucks has a relatively simple shape and a narrow spraying surface. When the strip bumper is sprayed with the nozzle on the spray robot, the spraying can be completed in a straight line. In this way, it is not convenient for the spray robot to control the spraying uniformity through the up and down movable spraying method. It is difficult to overcome the disadvantage that the spray amount of the middle nozzle and the edge nozzle when the nozzle sprays atomized paint liquid is different, resulting in relatively more paint accumulation in the middle part of the bumper. In addition, before spraying, it is not convenient to judge whether the center of the nozzle and the center of the bumper are in a horizontal state, which will cause the paint sprayed by the nozzle to be skewed on the bumper, with more paint on one side of the paint surface and less on the other side, which not only affects the appearance, but also leads to inconsistent protective performance on both sides of the bumper paint surface. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a car bumper spraying device, which can effectively solve the problem of different spray amounts from the middle and edge nozzles when the nozzle sprays atomized paint liquid and the problem of judging and ensuring that the nozzle and the bumper remain centered.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a car bumper spraying device, comprising a spraying robot body and an atomizing nozzle device fixed at one end of the spraying robot body, and further comprising: two groups of clamping sensing mechanisms respectively arranged above and below the atomizing nozzle device, the clamping sensing mechanism comprising a translation guide roller for contacting the bumper and a pressure sensor for sensing whether the bumper is in contact with the bumper, the pressure sensor being arranged above the translation guide roller; a centering positioning mechanism, the centering positioning mechanism being arranged outside the shell of the atomizing nozzle device, the centering positioning mechanism comprising a pressure sensor for adjusting the relative position of the two translation guide rollers A centering positioning clamp arm with a distance between them, one end of the two centering positioning clamp arms is respectively fixed to the tail ends of the two pressure sensor housings; a uniform spraying control mechanism, the uniform spraying control mechanism is arranged inside the housing of the atomizing nozzle device, the uniform spraying control mechanism includes a first clamping plate, a second clamping plate and a third clamping plate slidably connected to the inner cavity of the housing of the atomizing nozzle device, an adjustment bracket is fixed on the surface of the first clamping plate, the second clamping plate and the third clamping plate, one end of the adjustment bracket is fixed with a resisting sphere, and an inclined adjustment block is slidably connected above the resisting sphere.

[0006] According to one embodiment of the present invention, a lifting slider is fixed to the other end of the two center positioning clamp arms, an internal threaded sleeve is fixed to the end surface of the two lifting sliders opposite to each other, a bidirectional threaded rod is threadedly penetrated between the two internal threaded sleeves, and two lifting slides arranged up and down are provided on one side of the bidirectional threaded rod, both ends of the bidirectional threaded rod extend to the bearing seat of the lifting slide, a lifting slide groove matching the sliding of the lifting slider is opened on one side surface of the lifting slide, and two sections of spiral grooves are symmetrically arranged on the surface of the bidirectional threaded rod.

[0007] According to one embodiment of the present invention, the third clamping disk is arranged on one side of the first clamping disk, the second clamping disk is arranged between the first clamping disk and the third clamping disk, a central spray hole tube is fixed through the surface of the first clamping disk, an inner ring spray hole tube is fixed through the surface of the second clamping disk, an outer ring spray hole tube is fixed through the surface of the third clamping disk, and telescopic sliding holes are opened on the surfaces of the first clamping disk, the second clamping disk and the third clamping disk.

[0008] According to one embodiment of the present invention, an adjusting shell is fixed on the shell surface of the atomizing nozzle device, a fixed partition is fixed between the inner top wall and the inner bottom wall of the adjusting shell, the adjusting bracket slides through the inner wall of the fixed partition, a return spring is sleeved on the surface of the adjusting bracket, one end of the return spring is fixed on one side surface of the fixed partition, and the other end of the return spring is fixed on the end seat of the resisted ball.

[0009] According to one embodiment of the present invention, the upper end surface of the adjustment shell is provided with a clearance opening matching with the inclined adjustment block, the surface of the inclined adjustment block opposite to the resisting sphere is sloped, and a vertical connecting frame is fixed between the inclined adjustment block and the lifting slider.

[0010] According to one embodiment of the present invention, the two lifting slides are respectively fixed at the upper end and the lower end of the adjusting shell, the bottom surface of the adjusting shell is rotatably connected with a driving gear, one side of the driving gear is meshingly connected with a driven gear, the driven gear is sleeved and fixed on the surface of the bidirectional threaded rod, a driving motor is fixed at the center of the end face of the driving gear, and a positioning frame is fixed between the driving motor and the adjusting shell.

[0011] According to one embodiment of the present invention, the three abutted spheres are kept on the same vertical plane before being squeezed by the inclined plane adjusting block, and the three abutted spheres are distributed in the front, middle and rear positions after being squeezed by the inclined plane adjusting block.

[0012] According to one embodiment of the present invention, a translation roller frame is arranged between the translation guide roller and the pressure sensor, the detection end of the pressure sensor is fixed on the surface of the translation roller frame, the centers of the two end surfaces of the translation guide roller are fixed with rotating shafts, the translation guide roller is rotatably connected to the translation roller frame via the rotating shaft, and a connecting wire is arranged inside the center positioning clamp arm.

[0013] According to one embodiment of the present invention, a sealing gasket plate is fixed on the inner wall of the atomizing nozzle device, a docking joint is provided at one end of the atomizing nozzle device close to the spray robot body, a supporting base is provided at the lower end of the spray robot body, the pressure sensor is electrically connected to the PLC controller of the spray robot body to form a detection circuit, and the drive motor is electrically connected to the PLC controller of the spray robot body to form a power drive circuit.

[0014] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects: 1. By setting up two sets of clamping sensing mechanisms and centering positioning mechanisms, the two sets of clamping sensing mechanisms and the centering positioning mechanisms work together to ensure that the spray outlet of the atomizing nozzle device is facing the spraying surface of the bumper before spraying, so that the nozzle and the bumper remain centered; the translation guide roller rolls in contact with the surface of the bumper to prevent it from shifting up and down, avoiding the bumper from shifting during the spraying process and causing the spray to be skewed, while not affecting the spray robot's horizontal straight line movement along the bumper for spraying.

[0015] 2. Through the uniform spraying control mechanism, the uniform spraying control mechanism is composed of inclined adjustment block, resistance ball, adjustment bracket and other parts; when the clamp arm is adjusted in the center, the mechanism can arrange the central spray hole tube, inner circle spray hole tube and outer circle spray hole tube from far to near in the spray port of the atomizing nozzle device, and arrange the spray hole tubes in layers, which effectively solves the problem of uneven spray volume between the middle and edge spray holes of the spray gun, and improves the uneven painting condition between the middle and edge of the bumper spray surface.

[0016] 3. Through the clamping sensing mechanism, two pressure sensors sense the pressure changes to judge the center clamping state of the bumper by the translation guide roller. When the pressure reaches the set value, the clamping is completed, realizing automatic clamping judgment. The pressure sensor monitors the pressure of the translation guide roller against the bumper to prevent the center positioning clamp arm from applying excessive force to damage the bumper. During the painting process, the pressure sensor transmits the pressure change to the PLC controller of the spray robot body in the form of an electrical signal to control the spraying action of the atomizing nozzle device. When the translation guide roller maintains the pressure, the paint is continuously sprayed, and when the pressure disappears after leaving the bumper area, the paint is terminated. The abnormal changes of the pressure sensor can also be used to monitor whether the bumper is loose on the paint rack, thereby improving the intelligence and controllability of the painting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the atomizing nozzle device of the present invention; Figure 3 It is a schematic diagram of the structure of the centering positioning mechanism of the present invention; Figure 4 This is a schematic diagram of the structure of the central spray hole tube of the present invention; Figure 5 It is a schematic diagram of the structure of the clamping sensing mechanism of the present invention; Figure 6 It is a schematic diagram of the cross-sectional structure of the atomizing nozzle device of the present invention; Figure 7 It is a schematic diagram of the structure of the first chuck of the present invention; Figure 8 It is a schematic diagram of the telescopic sliding hole structure of the present invention; Fig. 9 For the present invention Figure 4 Enlarged view of point A in the middle; Fig.10 It is a schematic diagram of the fixed partition structure of the present invention; Fig.11 It is a schematic diagram of the driving gear structure of the present invention.

[0019] Figure numerals: 1, spray robot body; 2, atomizing nozzle device; 21, sealing gasket plate; 22, docking joint; 3, clamping induction mechanism; 31, translation guide roller; 32, translation roller frame; 33, pressure sensor; 34, rotating shaft; 35, connecting wire; 4, centering positioning mechanism; 41, centering positioning clamping arm; 42, lifting slider; 43, lifting slider; 44, bidirectional threaded rod; 45, internal threaded sleeve; 46, lifting slide; 47, driven gear; 48, driving gear; 49. Driving motor; 410. Positioning frame; 5. Support base; 6. Uniform spraying control mechanism; 61. First clamping plate; 62. Second clamping plate; 63. Third clamping plate; 64. Adjusting bracket; 65. Return spring; 66. Resistance ball; 67. Fixed partition; 68. Center spray hole tube; 69. Inner ring spray hole tube; 610. Outer ring spray hole tube; 611. Make way port; 612. Inclined adjustment block; 613. Vertical connecting frame; 614. Telescopic sliding hole; 615. Adjusting shell. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0021] The present invention will be further described below in conjunction with the embodiments.

[0022] Example: Refer to Figures 1 to 11 , a car bumper spraying device, comprising a spraying robot body 1 and an atomizing nozzle device 2 fixed at one end of the spraying robot body 1, and also comprising: Two groups of clamping sensing mechanisms 3 are respectively arranged above and below the atomizing nozzle device 2. The clamping sensing mechanism 3 includes a translation guide roller 31 for contacting the bumper and a pressure sensor 33 for sensing whether the bumper is in contact with the bumper. The pressure sensor 33 is arranged above the translation guide roller 31. The two pressure sensors 33 sense the pressure change and are used to judge the centering clamping state of the two translation guide rollers 31 on the bumper. A translation roller frame 32 is arranged between the translation guide roller 31 and the pressure sensor 33. The detection end of the pressure sensor 33 is fixed on the surface of the translation roller frame 32. A rotating shaft 34 is fixed at the center of both end faces of the roller 31. The translation guide roller 31 is rotatably connected to the translation roller frame 32 through the rotating shaft 34. A connecting wire 35 is arranged inside the center positioning clamp arm 41. The translation guide roller 31 rolls and fits on the surface of the bumper, so that the bumper can be prevented from shifting up and down without affecting the spray robot body 1 moving along the horizontal straight line of the bumper for spraying. The pressure sensor 33 senses the pressure value of the translation guide roller 31 against the bumper, which can prevent the center positioning clamp arm 41 from continuing to clamp and cause damage to the bumper clamping surface; The centering positioning mechanism 4 is arranged on the outside of the shell of the atomizing nozzle device 2. The centering positioning mechanism 4 includes a centering positioning clamping arm 41 for adjusting the relative distance between the two translation guide rollers 31. One end of the two centering positioning clamping arms 41 is respectively fixed to the rear end of the shell of the two pressure sensors 33. The distance between the two centering positioning clamping arms 41 is contracted and cooperates with the translation guide roller 31 to achieve the effect of centering the bumper. The other ends of the two centering positioning clamping arms 41 are fixed with lifting sliders 42. The end faces of the two lifting sliders 42 facing each other are fixed with internal threaded sleeves 45. A two-way threaded rod 44 is threadedly penetrated between the two internal threaded sleeves 45. Two lifting slides 43 arranged up and down are arranged on one side of the two-way threaded rod 44. Both ends of the two-way threaded rod 44 extend to the bearing seat of the lifting slide 43. One side of the lifting slide 43 The surface is provided with a lifting groove 46 that is slidably matched with the lifting slider 42. The surface of the bidirectional threaded rod 44 is symmetrically provided with two sections of spiral grooves. The two lifting slides 43 are respectively fixed to the upper and lower ends of the adjusting shell 615. The bottom surface of the adjusting shell 615 is rotatably connected with a driving gear 48. One side of the driving gear 48 is meshedly connected with a driven gear 47. The driven gear 47 is sleeved and fixed on the surface of the bidirectional threaded rod 44. A driving motor 49 is fixed at the center of the end face of the driving gear 48. A positioning frame 410 is fixed between the driving motor 49 and the adjusting shell 615. During the adjustment process of the centering positioning clamp arm 41, the driving motor 49 drives the driving gear 48 to rotate, and transmits the transmission to the driven gear 47 meshed with the driving gear 48. The rotation of the driven gear 47 can control the rotation of the bidirectional threaded rod 44 on the lifting slide 43. The uniform spraying regulating mechanism 6 is arranged inside the shell of the atomizing nozzle device 2. The uniform spraying regulating mechanism 6 includes a first clamping plate 61, a second clamping plate 62 and a third clamping plate 63 which are slidably connected to the inner cavity of the shell of the atomizing nozzle device 2. An adjusting bracket 64 is fixed on the surface of the first clamping plate 61, the second clamping plate 62 and the third clamping plate 63. A resisting ball 66 is fixed at one end of the adjusting bracket 64. An inclined adjustment block 612 is slidably connected above the resisting ball 66.

[0023] The third clamping plate 63 is arranged on one side of the first clamping plate 61, and the second clamping plate 62 is arranged between the first clamping plate 61 and the third clamping plate 63. A central spray hole tube 68 is fixedly penetrated on the surface of the first clamping plate 61, an inner ring spray hole tube 69 is fixedly penetrated on the surface of the second clamping plate 62, and an outer ring spray hole tube 610 is fixedly penetrated on the surface of the third clamping plate 63. Telescopic sliding holes 614 are provided on the surfaces of the first clamping plate 61, the second clamping plate 62 and the third clamping plate 63. An adjusting shell 615 is fixed on the shell surface of the atomizing nozzle device 2. A fixed partition 67 is fixed between the inner top wall and the inner bottom wall of the adjusting shell 615. The adjusting bracket 64 slides through the inner wall of the fixed partition 67. On the upper surface, a return spring 65 is sleeved on the surface of the adjustment bracket 64, one end of the return spring 65 is fixed on one side surface of the fixed partition plate 67, and the other end of the return spring 65 is fixed on the end seat of the resisting sphere 66. The upper end surface of the adjustment shell 615 is provided with a make way opening 611 matching the inclined adjustment block 612, and the surface of the side of the inclined adjustment block 612 opposite to the resisting sphere 66 is sloped, and a vertical connecting frame 613 is fixed between the inclined adjustment block 612 and the lifting slider 42. The three resisting spheres 66 are kept on the same vertical plane before being squeezed by the inclined adjustment block 612, and the three resisting spheres 66 are distributed in the front, middle and rear positions after being squeezed by the inclined adjustment block 612.

[0024] A sealing gasket plate 21 is fixed on the inner wall of the atomizing nozzle device 2, a docking joint 22 is provided at one end of the atomizing nozzle device 2 close to the spray robot body 1, a supporting base 5 is provided at the lower end of the spray robot body 1, the pressure sensor 33 is electrically connected to the PLC controller of the spray robot body 1 to form a detection circuit, the drive motor 49 is electrically connected to the PLC controller of the spray robot body 1 to form a power drive circuit, and the pressure changes monitored by the pressure sensor 33 are transmitted to the PLC controller of the spray robot body 1 through electrical signals, which can control the start and stop of the spraying action of the atomizing nozzle device 2 after processing.

[0025] The working principle of the present invention is as follows: before use, the connecting wire 35 is electrically connected to the PLC controller of the spray robot body 1, and the bar bumper of the truck is fixed on the spray auxiliary bracket. When spraying, the spray robot body 1 moves along the spray direction of the bumper through a multi-joint structure with a high degree of freedom. At this time, the paint supply system supplies the atomizing nozzle device 2 at the front end, that is, the paint is atomized and ejected from the spray gun and the bar bumper is sprayed; Before spraying, the spray robot body 1 controls the atomizing nozzle device 2 to move to the bumper area, so that the two translation guide rollers 31 distributed up and down are respectively located above and below the bumper, and the driving motor 49 is turned on at this time. The driving motor 49 drives the bidirectional threaded rod 44 to rotate at the bearing seat of the lifting slide 43, and the surface of the bidirectional threaded rod 44 is symmetrically provided with bidirectional spiral grooves, so that the two internal threaded sleeves 45 symmetrically arranged on the bidirectional threaded rod 44 drive the two lifting slides 42 to approach each other, and the corresponding centering positioning clamping arms 41 are controlled to open and close by adjusting the distance between the lifting slides 42. The distance between the two centering positioning clamping arms 41 shrinks and cooperates with the translation guide roller 31 to achieve the effect of centering the bumper, thereby ensuring that the spray outlet of the atomizing nozzle device 2 is positively aligned with the spraying surface of the bumper, and at the same time, the translation guide roller 31 rolls and fits on the surface of the bumper, so that the nozzle and the bumper can be prevented from being offset in the upper and lower positions without affecting the spray robot body 1 moving along the horizontal straight line of the bumper for spraying, thereby reducing the trouble of spraying crookedly due to the deviation of the bumper in the middle; When the two translation guide rollers 31 are pressed against the surface of the bumper, the two pressure sensors 33 sense the pressure change and are used to determine the centering clamping state of the two translation guide rollers 31 on the bumper, that is, when the pressure of the two symmetrically arranged pressure sensors 33 changes to the set pressure value during the process of the translation guide rollers 31 clamping the bumper, it means that the clamping has been completed; and the pressure sensor 33 senses the pressure value of the translation guide rollers 31 against the bumper to prevent the centering positioning clamping arm 41 from continuing to clamp and causing damage to the bumper clamping surface; and during the painting process, the pressure sensor 33 senses the pressure value of the translation guide rollers 31 against the bumper to prevent the centering positioning clamping arm 41 from continuing to clamp and causing damage to the bumper clamping surface. The pressure change monitored by the sensor 33 is transmitted to the PLC controller of the spray robot body 1 through an electrical signal, and after processing, it can control the start and stop of the spraying action of the atomizing nozzle device 2, that is, the painting action continues when the translation guide roller 31 keeps a certain pressure against the bumper, or the disappearance of the induced pressure caused by the translation guide roller 31 moving out of the bumper area will stop the painting action of the atomizing nozzle device 2, and the abnormal change of the pressure sensor 33 during the process of the translation guide roller 31 clamping the bumper can be used to monitor whether the bumper is loose on the paint spraying rack; During the adjustment process of the centering positioning clamp arm 41, the driving motor 49 drives the driving gear 48 to rotate, and transmits the transmission to the driven gear 47 meshing with the driving gear 48. The rotation of the driven gear 47 can control the rotation of the bidirectional threaded rod 44 on the lifting slide 43. When the lifting slide block 42 is close to the adjustment shell 615 for adjustment, the upper lifting slide block 42 descends to drive the inclined adjustment block 612 slidingly sleeved on the bidirectional threaded rod 44 to descend accordingly. The inclined adjustment block 612 continuously enters the adjustment shell 615 through the clearance port 611, so that the three abutted balls 66 distributed up and down overcome the elastic force of the return spring 65 and abut on the inclined surface of the inclined adjustment block 612 with a slope, so that the sliding distance of the adjustment bracket 64 corresponding to one end of the three abutted balls 66 changes from large to small, so that the first clamping plate 61, the second clamping plate 62 and the third clamping plate 63 move backward in the atomizing nozzle device 2, and then the central spray hole tube 68 on the first clamping plate 61 and the inner ring spray hole tube 68 on the second clamping plate 62 are moved backward. The extension lengths of the orifice tube 69 and the outer ring orifice tube 610 on the third chuck 63 are changed, that is, the central orifice tube 68, the inner ring orifice tube 69 and the outer ring orifice tube 610 are arranged from far to near in the spray outlet of the atomizing nozzle device 2 (first, when the fluid flows from the inside of the spray gun to the spray outlet, this arrangement makes the fluid flow resistance distribution at the central orifice tube 68, the inner ring orifice tube 69 and the outer ring orifice tube 610 relatively uniform; second, the spray angle and range can be reasonably adjusted according to the distance from the central axis of the spray gun and the positional relationship between them. The central orifice tube 68 is far from the spray outlet, and its spray angle can be relatively small, which is mainly responsible for the spraying of the central area of ​​the spray gun. As the distance between the inner ring orifice tube 69 and the outer ring orifice tube 610 and the spray outlet becomes closer, the spray angle can be gradually increased, so as to better cover the middle area and the edge area. In this way, through the coordinated cooperation of the spray angles and ranges of different orifice tubes, the spray area of ​​the entire spray gun can be made more uniform, and the difference in the spray amount between the middle and the edge can be reduced;3. There will be certain interactions between the fluids ejected from different nozzles. The fluid ejected from the central nozzle 68 will cause certain disturbances to the surrounding air during the outward ejection process, forming an airflow field. The fluids ejected from the inner and outer nozzles 69 and 610 will be guided and constrained by the airflow when entering this airflow field, making their ejection direction and distribution more uniform. At the same time, this interaction can also prevent the fluids from the edge nozzles from being excessively dispersed outwards and the fluids from the middle nozzles from being excessively concentrated in the central area, thereby helping to reduce the flow of the middle nozzles. The difference in the spraying amount of the central spray hole 68, the inner ring spray hole 69 and the outer ring spray hole 610 can be arranged in layers in front and back to reduce the problem of different spraying amounts of the middle spray hole and the edge spray hole on the spray gun, so that the uneven painting of the middle area and the edge of the bumper spray surface can be improved with the bumper held in the center. In addition, the central spray hole 68, the inner ring spray hole 69 and the outer ring spray hole 610 can be reset to the original arrangement state when the spray robot body 1 is free to spray the non-strip bumper to adapt to more spraying application scenarios. ;

[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vehicle bumper spraying device, comprising a spraying robot body (1) and an atomizing nozzle device (2) fixed at one end of the spraying robot body (1), characterized in that: Also includes: two groups of clamping sensing mechanisms (3) respectively arranged above and below the atomizing nozzle device (2), the clamping sensing mechanism (3) comprising a translation guide roller (31) for contacting the bumper and a pressure sensor (33) for sensing whether the bumper is in contact with the bumper, the pressure sensor (33) being arranged above the translation guide roller (31); A centering positioning mechanism (4), the centering positioning mechanism (4) being arranged outside the shell of the atomizing nozzle device (2), the centering positioning mechanism (4) comprising a centering positioning clamping arm (41) for adjusting the relative distance between the two translation guide rollers (31), one end of the two centering positioning clamping arms (41) being respectively fixed to the rear ends of the shells of the two pressure sensors (33); A uniform spraying control mechanism (6), wherein the uniform spraying control mechanism (6) is arranged inside the shell of the atomizing nozzle device (2), and the uniform spraying control mechanism (6) comprises a first clamping plate (61), a second clamping plate (62) and a third clamping plate (63) which are slidably connected to the inner cavity of the shell of the atomizing nozzle device (2), and an adjustment bracket (64) is fixed on the surface of the first clamping plate (61), the second clamping plate (62) and the third clamping plate (63), and a resisting sphere (66) is fixed at one end of the adjustment bracket (64), and an inclined adjustment block (612) is slidably connected above the resisting sphere (66).

2. The automobile bumper spraying device according to claim 1, characterized in that: A lifting slider (42) is fixed to the other end of the two centering positioning clamp arms (41), an internal thread sleeve (45) is fixed to the opposite end surface of the two lifting sliders (42), a bidirectional threaded rod (44) is threadedly penetrated between the two internal thread sleeves (45), two lifting slides (43) arranged up and down are arranged on one side of the bidirectional threaded rod (44), both ends of the bidirectional threaded rod (44) extend into the bearing seat of the lifting slide (43), a lifting groove (46) that is slidably matched with the lifting slider (42) is opened on one side surface of the lifting slide (43), and two sections of spiral grooves are symmetrically arranged on the surface of the bidirectional threaded rod (44).

3. The automobile bumper spraying device according to claim 2, characterized in that: The third clamping plate (63) is arranged on one side of the first clamping plate (61), and the second clamping plate (62) is arranged between the first clamping plate (61) and the third clamping plate (63). A central spray hole tube (68) is fixedly passed through the surface of the first clamping plate (61), an inner ring spray hole tube (69) is fixedly passed through the surface of the second clamping plate (62), and an outer ring spray hole tube (610) is fixedly passed through the surface of the third clamping plate (63). Telescopic sliding holes (614) are provided on the surfaces of the first clamping plate (61), the second clamping plate (62) and the third clamping plate (63).

4. The automobile bumper spraying device according to claim 3, characterized in that: An adjusting shell (615) is fixed on the shell surface of the atomizing nozzle device (2), a fixed partition (67) is fixed between the inner top wall and the inner bottom wall of the adjusting shell (615), the adjusting bracket (64) slides through the inner wall of the fixed partition (67), a return spring (65) is sleeved on the surface of the adjusting bracket (64), one end of the return spring (65) is fixed to a side surface of the fixed partition (67), and the other end of the return spring (65) is fixed to the end seat of the resisting sphere (66).

5. The automobile bumper spraying device according to claim 4, characterized in that: The upper end surface of the adjustment shell (615) is provided with a clearance opening (611) matching with the inclined adjustment block (612); the surface of the inclined adjustment block (612) opposite to the resisting sphere (66) is in a slope shape; and a vertical connecting frame (613) is fixed between the inclined adjustment block (612) and the lifting slider (42).

6. The automobile bumper spraying device according to claim 2, characterized in that: The two lifting slides (43) are respectively fixed to the upper end and the lower end of the adjusting shell (615); the bottom surface of the adjusting shell (615) is rotatably connected to a driving gear (48); one side of the driving gear (48) is meshingly connected to a driven gear (47); the driven gear (47) is sleeved and fixed on the surface of a bidirectional threaded rod (44); a driving motor (49) is fixed at the center of the end surface of the driving gear (48); and a positioning frame (410) is fixed between the driving motor (49) and the adjusting shell (615).

7. The automobile bumper spraying device according to claim 5, characterized in that: The three resisted spheres (66) are maintained on the same vertical plane before being squeezed by the inclined plane adjustment block (612); after being squeezed by the inclined plane adjustment block (612), the three resisted spheres (66) are distributed at the front, middle and rear positions.

8. The automobile bumper spraying device according to claim 6, characterized in that: A translation roller frame (32) is provided between the translation guide roller (31) and the pressure sensor (33); a detection end of the pressure sensor (33) is fixed on the surface of the translation roller frame (32); a rotation shaft (34) is fixed at the center of both end surfaces of the translation guide roller (31); the translation guide roller (31) is rotationally connected to the translation roller frame (32) via the rotation shaft (34); and a connecting wire (35) is provided inside the center positioning clamp arm (41).

9. The automobile bumper spraying device according to claim 6, characterized in that: A sealing gasket plate (21) is fixed on the inner wall of the atomizing nozzle device (2); a docking joint (22) is provided at one end of the atomizing nozzle device (2) close to the spray robot body (1); a supporting base (5) is provided at the lower end of the spray robot body (1); the pressure sensor (33) is electrically connected to the PLC controller of the spray robot body (1) to form a detection circuit; and the drive motor (49) is electrically connected to the PLC controller of the spray robot body (1) to form a power drive circuit.

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