阅读说明：本技术 一种轮毂自动化喷漆装置 (Automatic paint spraying device for hub ) 是由 陆颖锋 鲁永猛 张峰 于 2021-06-25 设计创作，主要内容包括：本发明公开了轮毂加工制造领域内的一种轮毂自动化喷漆装置,包括基座,所述基座上沿长度方向设置有导轨,导轨上活动连接有移动支撑座,移动支撑座上对应各旋转轴设置有旋转驱动机构,每个所述旋转轴的上端均设置有定位座,每个定位座上均固定放置有轮毂,所述基座上方分别对应设置有第一喷漆箱体、第二喷漆箱体和第三喷漆箱体,所述第一喷漆箱体、第二喷漆箱体和第三喷漆箱体内部分别设置有第一喷漆机构、第二喷漆机构和第三喷漆机构,与所述第一喷漆箱体的出口相对应地设置有前道工装上料机构,与所述第二喷漆箱体的出口相对应地设置有后道工装上料机构。本发明能够实现自动对轮毂的相应部位进行喷漆,提高了轮毂喷漆效率。(The invention discloses an automatic hub paint spraying device in the field of hub processing and manufacturing, which comprises a base, the base is provided with a guide rail along the length direction, the guide rail is movably connected with a movable supporting seat, the movable supporting seat is provided with a rotary driving mechanism corresponding to each rotating shaft, the upper end of each rotating shaft is provided with a positioning seat, each positioning seat is fixedly provided with a wheel hub, a first paint spraying box body, a second paint spraying box body and a third paint spraying box body are respectively and correspondingly arranged above the base, a first paint spraying mechanism, a second paint spraying mechanism and a third paint spraying mechanism are respectively arranged in the first paint spraying box body, the second paint spraying box body and the third paint spraying box body, a front-channel tool feeding mechanism is arranged corresponding to the outlet of the first paint spraying box body, and a rear-channel tool feeding mechanism is arranged corresponding to the outlet of the second paint spraying box body. The invention can realize automatic paint spraying on the corresponding part of the hub, and improves the paint spraying efficiency of the hub.)

1. An automatic paint spraying device for hubs is characterized by comprising a base, wherein a guide rail is arranged on the base along the length direction, a movable supporting seat is movably connected onto the guide rail, a plurality of rotating shafts are sequentially arranged on the movable supporting seat along the length direction, a rotary driving mechanism is arranged on the movable supporting seat corresponding to each rotating shaft, a positioning seat is arranged at the upper end of each rotating shaft, a hub is fixedly arranged on each positioning seat, a first paint spraying box body, a second paint spraying box body and a third paint spraying box body are respectively and correspondingly arranged above the base, a first paint spraying mechanism, a second paint spraying mechanism and a third paint spraying mechanism are respectively arranged in the first paint spraying box body, the second paint spraying box body and the third paint spraying box body, a front-channel tool feeding mechanism is arranged corresponding to the outlet of the first paint spraying box body, and a rear-channel tool feeding mechanism is arranged corresponding to the outlet of the second paint spraying box body.

2. The automatic paint spraying device for hubs according to claim 1, wherein the interior of the movable support base is provided with a transmission groove, the rotation shafts are arranged perpendicular to the surface of the movable support base, each rotation shaft passes downward through the upper side plate of the movable support base and extends into the transmission groove, the lower end of each rotation shaft is rotatably supported on the mounting base on the bottom wall of the movable support base, a transmission sprocket is sleeved on the periphery of one end of each rotation shaft extending into the transmission groove, a driving shaft is vertically arranged in the transmission groove corresponding to each transmission sprocket, a driving sprocket is sleeved on the driving shaft, and the driving sprocket is in transmission connection with each transmission sprocket through a transmission chain.

3. The automatic paint spraying device for the hubs according to claim 2 is characterized in that the transmission groove comprises a first groove body and a second groove body which correspond to each other left and right, the height of the first groove body is larger than that of the second groove body, each rotating shaft is arranged at the first groove body, the driving shaft is arranged at the second groove body, a plurality of mounting grooves are formed in the upper side plate of the movable supporting seat corresponding to the driving shaft and each rotating shaft, a bearing sleeved on the periphery of the corresponding rotating shaft or the driving shaft is arranged in each mounting groove, the upper end of the driving shaft extends out of the upper side plate of the movable supporting seat, a driving motor is arranged at the extending end of the movable supporting seat corresponding to the driving shaft, and the output end of the driving motor is arranged downwards and is in transmission connection with the driving shaft through a coupler.

4. The automatic paint spraying device for the wheel hub according to any one of claims 1 to 3, wherein the first paint spraying box body is rectangular, a moving groove is formed in the middle of the lower side of the first paint spraying box body, each rotating shaft penetrates the moving groove upwards and extends into the first paint spraying box body when the moving support passes through the first paint spraying box body, a positioning head is arranged at the center of a positioning seat of each rotating shaft, the wheel hub is horizontally placed on the corresponding positioning seat, the positioning head axially penetrates through a central hole of the wheel hub, the first paint spraying mechanism comprises a plurality of first upper spray nozzles which are sequentially arranged on the inner wall of the upper side of the first paint spraying box body in the width direction, a plurality of first side spray nozzles are sequentially arranged on the inner wall of the left side and the inner wall of the right side of the first paint spraying box body in the height direction, a plurality of first lower spray nozzles are arranged on the inner wall of the lower side of the first paint spraying box body on the left side and the right side of the moving groove, and each first upper spray nozzle is arranged corresponding to the upper end of the wheel hub, the first side shower nozzle of the left and right sides corresponds the wheel hub left and right sides setting respectively, and each first shower nozzle corresponds the wheel hub lower extreme setting, and each shower nozzle all is linked together the setting with the confession lacquer pipeline, the adjustable setting of injection angle of each shower nozzle.

5. The automatic paint spraying device for the hubs as claimed in any one of claims 1 to 3, wherein the front tooling feeding mechanism comprises a plurality of circular central plates, a plurality of moving plates are radially arranged on the periphery of each central plate at equal intervals in the circumferential direction, positioning parts are obliquely arranged on the outer sides of the moving plates, a sliding groove into which the central plates can be inserted is formed in one side of each moving plate close to the central plate, the moving plates are connected with the central plates in a sliding manner, moving blocks are arranged on the upper parts of the moving plates, a first connecting ring is arranged on the inner side of the positioning parts of the moving plates, an elastic shielding layer is correspondingly and horizontally arranged on the lower side of the central plates, a plurality of second connecting rings are arranged at equal intervals in the circumferential direction on the edges of the shielding layer, the first connecting rings are arranged in one-to-one correspondence with the second connecting rings, and the first connecting rings are connected with the corresponding second connecting rings; every well core plate top all corresponds the level and is provided with the center plate, the periphery of center plate radially is provided with a plurality of flexible arms along circumference equidistant, the periphery of center plate corresponds each flexible arm and radially has seted up a plurality of flexible grooves, flexible arm and the flexible groove looks swing joint that corresponds, the upside of center plate corresponds each flexible arm and radially is provided with a plurality of push cylinder along circumference equidistant distribution, push cylinder's piston rod stretches out the end and is connected with corresponding flexible arm through the connecting piece, the lower extreme of flexible arm is provided with the side sucking disc, the downside of center plate is provided with the center sucking disc, each side sucking disc sets up with each movable block one-to-one, the center sucking disc sets up with well core plate corresponding.

6. An automatic paint spraying device for hubs according to claim 5, wherein vertical control rods are connected to the upper ends of the central disks, each control rod is connected with a control arm, the axes of the control arms are parallel to the arrangement direction of the hubs, and the control arms are mounted on the moving manipulator.

7. The automatic paint spraying device for the hubs as claimed in claim 5, wherein the second paint spraying box body has the same structure as the first paint spraying box body, the second paint spraying mechanism comprises at least two circles of second upper spray nozzles which are circumferentially and equally spaced on the inner wall of the upper side of the second paint spraying box body, each second upper spray nozzle corresponds to the circumferential arrangement of the upper end of the hub, when the movable support passes through the second paint spraying box body, the upper end of each hub is covered with a central plate, each positioning part of the central plate is embedded into an annular groove at the upper end of the hub, a plurality of second side spray nozzles are sequentially arranged on the inner walls of the left side and the right side of the second paint spraying box body along the height direction, each second side spray nozzle corresponds to the side surface of the hub, each spray nozzle is communicated with a paint supply pipeline, and the spray angle of each spray nozzle can be adjusted.

8. The automatic paint spraying device for the hubs according to claim 5, wherein the rear tooling feeding mechanism is the same as the front tooling feeding mechanism in structure and comprises a plurality of shielding rings, the shielding rings are arranged corresponding to the upper ends of the hubs and supported at the upper ends of the corresponding hubs, a working disc is correspondingly arranged above each shielding ring, a plurality of edge suckers are circumferentially arranged at equal intervals at the lower end of each working disc corresponding to the shielding rings, the upper end of each working disc is connected with a vertical control rod, each control rod is connected with a control arm, the axis of each control arm is parallel to the arrangement direction of each hub, and the control arms are mounted on a movable manipulator.

9. The automatic paint spraying device for the hubs according to claim 8, wherein the third paint spraying box body has the same structure as the first paint spraying box body, the third paint spraying mechanism comprises at least two circles of third upper spray nozzles which are circumferentially and equally spaced on the inner wall of the upper side of the third paint spraying box body, when the movable support base passes through the third paint spraying box body, the upper ends of the hubs are respectively provided with the shielding ring, and the third upper spray nozzles are arranged corresponding to the spokes of the hubs.

Technical Field

The invention belongs to the field of hub machining and manufacturing, and particularly relates to an automatic hub paint spraying device.

Background

In the prior art, after an aluminum alloy hub is subjected to key processes such as machining and the like, considering that the aluminum alloy hub has poor conditions in actual use and aims to reduce influence factors such as oxidation of aluminum alloy in air and achieve the purpose of attractiveness, the aluminum alloy hub has high requirements on the performance of a coated coating, and at present, a paint spraying process is mostly adopted in the hub industry. Present aluminum alloy wheel hub is when the application of spraying paint, often need spout different paint layers in different positions, however at the spraying in-process, owing to lack reasonable spraying device, when leading to switching the spraying paint in wheel hub's different positions, can produce the problem of spouting the position beyond the position that wheel hub needs the spraying, increased the defective percentage, influenced wheel hub efficiency of spraying paint, lead to reducing the qualification rate of wheel hub production and processing.

Disclosure of Invention

The invention aims to provide an automatic hub paint spraying device which can automatically spray paint to corresponding parts of a hub, improve the paint spraying efficiency of the hub and reduce the defective rate of hub production and processing.

The purpose of the invention is realized as follows: an automatic paint spraying device for a wheel hub comprises a base, wherein a guide rail is arranged on the base along the length direction, a movable supporting seat is movably connected onto the guide rail, a plurality of rotating shafts are sequentially arranged on the movable supporting seat along the length direction, a rotary driving mechanism is arranged on the movable supporting seat corresponding to each rotating shaft, a positioning seat is arranged at the upper end of each rotating shaft, a wheel hub is fixedly arranged on each positioning seat, a first paint spraying box body, a second paint spraying box body and a third paint spraying box body are respectively and correspondingly arranged above the base, a first paint spraying mechanism, a second paint spraying mechanism and a third paint spraying mechanism are respectively arranged in the first paint spraying box body, the second paint spraying box body and the third paint spraying box body, a front-channel tool feeding mechanism is arranged corresponding to the outlet of the first paint spraying box body, and a rear-channel tool feeding mechanism is arranged corresponding to the outlet of the second paint spraying box body.

When the paint spraying work is carried out, the movable supporting seat moves along the guide rail, a plurality of hubs are placed on rotating shafts of the movable supporting seat, when the movable supporting seat passes through a first paint spraying box body, all spray heads of the first paint spraying mechanism respectively carry out integral paint spraying on the hubs from the upper part, the lower part and the side surfaces, when all the hubs come out of the first paint spraying box body, a front-way tool loading mechanism respectively places front-way tools for shielding the upper end surfaces of the hubs on all the hubs, then the hubs enter a second paint spraying box body, and all the spray heads of the second paint spraying mechanism spray a second composite paint layer on the part, positioned on the periphery of the front-way tool, of the upper end of the hub and the periphery of the hubs; then when each wheel hub comes out from the second paint spraying box body, the rear tooling of the annular peripheral part of the upper end of each wheel hub is respectively placed on each wheel hub by the rear tooling feeding mechanism, then each wheel hub enters the third paint spraying box body, and each spray head of the third paint spraying mechanism sprays a third composite paint layer on each spoke of each wheel hub. Compared with the prior art, the invention has the beneficial effects that: can realize spraying paint to wheel hub's corresponding position automatically, improve wheel hub spraying paint efficiency, reduce the defective rate of wheel hub production and processing.

As a further improvement of the invention, a transmission groove is arranged inside the movable supporting seat, the rotating shafts are perpendicular to the surface of the movable supporting seat, each rotating shaft downwards penetrates through the upper side plate of the movable supporting seat and extends into the transmission groove, the lower end of each rotating shaft is rotatably supported on the mounting seat on the bottom wall of the movable supporting seat, a transmission chain wheel is sleeved on the periphery of one end, extending into the transmission groove, of each rotating shaft, a driving shaft is vertically arranged in the transmission groove corresponding to each transmission chain wheel, a driving chain wheel is sleeved on the driving shaft, and the driving chain wheel is in transmission connection with each transmission chain wheel through a transmission chain. The driving chain wheel of the driving shaft drives each rotating shaft to rotate through a chain, each hub on the positioning seat rotates around a vertical axis, and each spray head is enabled to spray paint to the hubs more uniformly.

As a further improvement of the invention, the transmission groove comprises a first groove body and a second groove body which correspond to each other left and right, the height of the first groove body is greater than that of the second groove body, each rotating shaft is arranged at the first groove body, the driving shaft is arranged at the second groove body, a plurality of mounting grooves are formed in the upper side plate of the movable supporting seat corresponding to the driving shaft and each rotating shaft, a bearing sleeved on the periphery of the corresponding rotating shaft or the driving shaft is arranged in each mounting groove, the upper end of the driving shaft extends out of the upper side plate of the movable supporting seat, a driving motor is arranged on the movable supporting seat corresponding to the extending end of the driving shaft, and the output end of the driving motor is arranged downwards and is in transmission connection with the driving shaft through a coupler. The driving motor drives the driving shaft to rotate, power is provided for the driving shaft, the driving motor and the corresponding paint spraying box body are arranged in a staggered mode in the width direction, and the supporting seat is convenient to move.

As a further improvement of the invention, the first paint spraying box body is rectangular, a moving groove is arranged in the middle of the lower side of the first paint spraying box body, when a moving support seat passes through the first paint spraying box body, each rotating shaft upwards passes through the moving groove and extends into the first paint spraying box body, a positioning head is arranged in the center of a positioning seat of each rotating shaft, a hub is horizontally placed on the corresponding positioning seat, the positioning head axially passes through a central hole of the hub, the first paint spraying mechanism comprises a plurality of first upper spray heads which are sequentially arranged on the inner wall of the upper side of the first paint spraying box body along the width direction, a plurality of first side spray heads are sequentially arranged on the inner walls of the left side and the right side of the first paint spraying box body along the height direction, a plurality of first lower spray heads are respectively arranged on the inner walls of the lower side of the left side and the right side of the first paint spraying box body positioned on the moving groove, each first upper spray head is arranged corresponding to the upper end of the hub, the first side spray heads on the left side and the right side are respectively arranged corresponding to the left side and the right side of the hub, each first shower nozzle corresponds the wheel hub lower extreme setting, and each shower nozzle all is linked together the setting with supplying lacquer pipeline, the adjustable setting of injection angle of each shower nozzle. When the movable supporting seat moves below the corresponding paint spraying box body, the rotating shaft just penetrates through the moving groove, the inlet and the outlet are respectively arranged at the front end and the rear end of each paint spraying box body, each wheel hub conveniently enters each paint spraying box body, and the first upper spray head, the first side spray head and the first lower spray head are used for spraying primer on the whole wheel hub.

As a further improvement of the invention, the front tooling feeding mechanism comprises a plurality of circular central plates, a plurality of moving plates are radially arranged on the periphery of each central plate at equal intervals along the circumferential direction, positioning parts are obliquely arranged on the outer sides of the moving plates, sliding grooves into which the central plates can be inserted are formed in one sides of the moving plates close to the central plates, the moving plates are connected with the central plates in a sliding manner, moving blocks are arranged on the upper parts of the moving plates, first connecting rings are arranged on the inner sides of the positioning parts of the moving plates, shielding layers with elasticity are correspondingly and horizontally arranged on the lower sides of the central plates, a plurality of second connecting rings are arranged at equal intervals along the circumferential direction on the edges of the shielding layers, the first connecting rings are correspondingly arranged with the second connecting rings, and the first connecting rings are connected with the corresponding second connecting rings; every well core plate top all corresponds the level and is provided with the center plate, the periphery of center plate radially is provided with a plurality of flexible arms along circumference equidistant, the periphery of center plate corresponds each flexible arm and radially has seted up a plurality of flexible grooves, flexible arm and the flexible groove looks swing joint that corresponds, the upside of center plate corresponds each flexible arm and radially is provided with a plurality of push cylinder along circumference equidistant distribution, push cylinder's piston rod stretches out the end and is connected with corresponding flexible arm through the connecting piece, the lower extreme of flexible arm is provided with the side sucking disc, the downside of center plate is provided with the center sucking disc, each side sucking disc sets up with each movable block one-to-one, the center sucking disc sets up with well core plate corresponding. The central sucker is fixedly adsorbed on the central plate, the lateral suckers are respectively fixedly adsorbed on the moving blocks on the upper portions of the corresponding moving plates, the pushing cylinders drive the telescopic arms to move according to the diameter size specifications of different hubs, the telescopic arms drive the corresponding moving blocks to move through the corresponding lateral suckers, the moving plates are driven to move radially, the area of the moving plate with the dynamic elastic shielding layer is increased or reduced, and the front tooling can automatically adapt to the hubs with different diameter size specifications.

As a further improvement of the invention, the upper end of each central disc is connected with a vertical control rod, each control rod is connected with a control arm, the axis of each control arm is parallel to the arrangement direction of each hub, and the control arms are arranged on the mobile manipulator. The movable manipulator drives the control arm to move, each control rod on the control arm can drive the central disc to move, the central disc drives the central disc to be placed on the corresponding hub, the central suction disc and the side suction discs are both vacuum suction discs, and the central suction disc and the side suction discs loosen the central disc and the movable plate.

As a further improvement of the invention, the second paint spraying box body and the first paint spraying box body have the same structure, the second paint spraying mechanism comprises at least two circles of second upper spray heads which are distributed on the inner wall of the upper side of the second paint spraying box body at equal intervals along the circumferential direction, each second upper spray head is arranged corresponding to the circumferential direction of the upper end of the hub, when the movable supporting seat passes through the second paint spraying box body, the upper end of each hub is covered with a central plate, each positioning part of the central plate is embedded into an annular groove at the upper end of the hub, the inner walls of the left side and the right side of the second paint spraying box body are sequentially provided with a plurality of second side spray heads along the height direction, each second side spray head is arranged corresponding to the side face of the hub, each spray head is communicated with a paint supply pipeline, and the spray angle of each spray head can be adjusted. The central plate can be respectively placed in an upper annular groove and a lower annular groove at the upper end of the hub, and a second composite paint layer is sprayed on the part of the upper end of the hub, which is positioned on the periphery of the front tooling, of the second upper spray head and the second side spray head and the periphery of the hub.

As a further improvement of the invention, the rear-end tool feeding mechanism and the front-end tool feeding mechanism have the same structure, the rear-end tool feeding mechanism comprises a plurality of shielding rings, the shielding rings are arranged corresponding to the upper ends of the hubs, the shielding rings are supported at the upper ends of the corresponding hubs, a working disc is correspondingly arranged above each shielding ring, a plurality of edge suckers are circumferentially and equidistantly arranged at the lower end of each working disc corresponding to the shielding rings, the upper ends of the working discs are connected with vertical control rods, the control rods are connected with control arms, the axes of the control arms are parallel to the arrangement direction of the hubs, and the control arms are arranged on a movable manipulator. The rear tooling feeding mechanism can position the shielding ring on a corresponding hub from the second paint spraying box body, and the edge sucker is a vacuum sucker.

As a further improvement of the invention, the third paint spraying box body has the same structure as the first paint spraying box body, the third paint spraying mechanism comprises at least two circles of third upper spray heads which are circumferentially distributed on the inner wall of the upper side of the third paint spraying box body at equal intervals, when the movable supporting seat passes through the third paint spraying box body, the upper end of each hub is provided with a shielding ring, and each third upper spray head is arranged corresponding to each spoke of the hubs. And the third upper spray nozzle sprays a third composite paint layer on each spoke of the hub.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a side view of the first paint spray booth body.

FIG. 3 is a diagram showing the positional relationship between the drive sprocket and the drive sprocket.

Fig. 4 is a schematic structural diagram of a feeding mechanism of a front tooling.

Fig. 5 is a schematic view showing the structure of the central plate and each moving plate.

Fig. 6 is a side view of a second paint spray booth.

Fig. 7 is a side view of a third paint spray booth.

Fig. 8 is a schematic structural diagram of a feeding mechanism of a subsequent tool.

Wherein, 1, a base, 2, a guide rail, 3, a movable supporting seat, 4, a rotating shaft, 5, a positioning head, 5a, a hub, 6, 7, a first paint spraying box body, 8, a second paint spraying box body, 9, a third paint spraying box body, 10, a first groove body, 10b, a second groove body, 11, a mounting seat, 12, a transmission chain wheel, 13, a driving chain wheel, 14, 15, a transmission chain, 16, a bearing, 17, a driving motor, 18, a coupler, 19, 20, a first upper nozzle, 21, a first side nozzle, 22, a first lower nozzle, 23, a central plate, 24, a positioning part, 24b, a sliding groove, 25, a first connecting ring, 27 shielding layers, 28, a second connecting ring, 29, a central plate, 30, a telescopic arm, 31, a telescopic groove, 32 pushing air cylinder, 33 connecting pieces, 34 side suction cups, 35, central suction cups, 36 control rods, 37 control arms, 38 moving manipulators, 39, a second upper nozzle, 40 annular grooves, 41 second side nozzle, 42 shield ring, 43 working plate, 44 edge suction cup, 45 third upper nozzle.

Detailed Description

As shown in fig. 1-8, an automatic paint spraying apparatus for a wheel hub comprises a base 1, a guide rail 2 is arranged on the base 1 along the length direction, a movable supporting seat 3 is movably connected on the guide rail 2, a plurality of rotating shafts 4 are sequentially arranged on the movable supporting seat 3 along the length direction, a rotary driving mechanism is arranged on the movable supporting seat 3 corresponding to each rotating shaft 4, a positioning seat 5 is arranged at the upper end of each rotating shaft 4, a wheel hub 6 is fixedly arranged on each positioning seat 5, a first paint spraying box 7, a second paint spraying box 8 and a third paint spraying box 9 are respectively arranged above the base 1, a first paint spraying mechanism, a second paint spraying mechanism and a third paint spraying mechanism are respectively arranged inside the first paint spraying box 7, the second paint spraying box 8 and the third paint spraying box 9, a front-way tool feeding mechanism is arranged corresponding to the outlet of the first paint spraying box 7, a rear-channel tool feeding mechanism is arranged corresponding to the outlet of the second paint spraying box body 8.

In order to ensure that each spray head sprays paint to the hub 6 more evenly, the inside of the movable supporting seat 3 is provided with a transmission groove 10, the rotating shaft 4 is perpendicular to the surface of the movable supporting seat 3, each rotating shaft 4 downwards passes through the upper side plate of the movable supporting seat 3 and extends into the transmission groove 10, the lower end of each rotating shaft 4 is rotatably supported on the mounting seat 11 on the bottom wall of the movable supporting seat 3, the periphery of one end of each rotating shaft 4 extending into the transmission groove 10 is sleeved with a transmission sprocket 12, a driving shaft 13 is vertically arranged in the transmission groove 10 corresponding to each transmission sprocket 12, a driving sprocket 14 is sleeved on the driving shaft 13, and the driving sprocket 14 is in transmission connection with each transmission sprocket 12 through a transmission chain 15. The driving chain wheel 14 of the driving shaft 13 drives each rotating shaft 4 to rotate through a chain, and each hub 6 on the positioning seat 5 rotates around a vertical axis.

In order to facilitate the movement of the movable support seat 3, the transmission groove 10 comprises a first groove body 10a and a second groove body 10b which correspond to each other left and right, the height of the first groove body 10a is larger than that of the second groove body 10b, each rotating shaft 4 is arranged at the first groove body 10a, the driving shaft 13 is arranged at the second groove body 10b, a plurality of mounting grooves are formed in the upper side plate of the movable support seat 3 corresponding to the driving shaft 13 and each rotating shaft 4, a bearing 16 sleeved on the periphery of the corresponding rotating shaft 4 or the driving shaft 13 is arranged in each mounting groove, the upper end of the driving shaft 13 extends out of the upper side plate of the movable support seat 3, the extending end of the corresponding driving shaft 13 on the movable support seat 3 is provided with a driving motor 17, the output end of the driving motor 17 is downwards arranged and is in transmission connection with the driving shaft 13 through a coupling 18. The driving motor 17 drives the driving shaft 13 to rotate, power is provided for the driving shaft 13, the driving motor 17 and the corresponding paint spraying box body are arranged in a staggered mode in the width direction, and moving is more convenient.

The first paint spraying box body 7 is rectangular, a moving groove 19 is formed in the middle of the lower side of the first paint spraying box body 7, when the moving support seat 3 passes through the first paint spraying box body 7, each rotating shaft 4 upwards penetrates through the moving groove 19 and extends into the first paint spraying box body 7, a positioning head 5a is arranged in the center of a positioning seat 5 of each rotating shaft 4, the wheel hub 6 is horizontally placed on the corresponding positioning seat 5, the positioning head 5a axially penetrates through a center hole of the wheel hub 6, the first paint spraying mechanism comprises a plurality of first upper spray nozzles 20 which are sequentially arranged on the inner wall of the upper side of the first paint spraying box body 7 along the width direction, a plurality of first side spray nozzles 21 are sequentially arranged on the inner walls of the left side and the right side of the first paint spraying box body 7 along the height direction, a plurality of first lower spray nozzles 22 are arranged on the inner walls of the lower side of the left side and the right side of the moving groove 19 of the first paint spraying box body 7, and each first upper spray nozzle 20 is arranged corresponding to the upper end of the wheel hub 6, the first side shower nozzle 21 of left and right sides corresponds the wheel hub 6 left and right sides setting respectively, and each first shower nozzle 22 corresponds the wheel hub 6 lower extreme setting, and each shower nozzle all is linked together the setting with supplying the lacquer pipeline, and the spray angle adjustable setting of each shower nozzle. When the movable supporting seat 3 moves below the corresponding paint spraying box body, the rotating shaft 4 just penetrates through the moving groove 19, the front end and the rear end of each paint spraying box body are respectively provided with an inlet and an outlet, each wheel hub 6 conveniently enters each paint spraying box body, and the first upper spray head 20, the first side spray head 21 and the first lower spray head 22 integrally spray primer on the wheel hub 6.

In order to automatically adapt to hubs 6 with different diameters and specifications, the front tooling feeding mechanism comprises a plurality of circular central plates 23, a plurality of moving plates 24 are radially arranged on the periphery of each central plate 23 at equal intervals along the circumferential direction, positioning parts 24a are obliquely arranged on the outer sides of the moving plates 24, a sliding groove 24b capable of allowing the central plate 23 to be inserted into is formed in one side, close to the central plate 23, of each moving plate 24, the moving plates 24 are connected with the central plates 23 in a sliding mode, moving blocks 25 are arranged on the upper portions of the moving plates 24, connecting rings I26 are arranged on the inner sides of the positioning parts 24a of the moving plates 24, an elastic shielding layer 27 is correspondingly and horizontally arranged on the lower side of the central plates 23, a plurality of connecting rings II 28 are arranged at equal intervals along the circumferential direction on the edge of the shielding layer 27, each connecting ring I26 is arranged in one-to-one correspondence with each connecting ring II 28, and each connecting ring I26 is connected with the corresponding connecting ring II 28; a central plate 29 is horizontally arranged above each central plate 23 correspondingly, a plurality of telescopic arms 30 are radially arranged on the periphery of the central plate 29 at equal intervals along the circumferential direction, a plurality of telescopic grooves 31 are radially formed in the periphery of the central plate 29 corresponding to the telescopic arms 30, the telescopic arms 30 are movably connected with the corresponding telescopic grooves 31, a plurality of pushing air cylinders 32 are radially arranged on the upper side of the central plate 29 corresponding to the telescopic arms 30 at equal intervals along the circumferential direction, the extending ends of piston rods of the pushing air cylinders 32 are connected with the corresponding telescopic arms 30 through connecting pieces 33, side suckers 34 are arranged at the lower ends of the telescopic arms 30, central suckers 35 are arranged on the lower side of the central plate 29, the side suckers 34 are arranged corresponding to the moving blocks 25 one by one, and the central suckers 35 are arranged corresponding to the central plates 23. The central suction cup 35 is fixedly attached to the central plate 23, the side suction cups 34 are fixedly attached to the moving block 25 on the upper portion of the corresponding moving plate 24, the push cylinders 32 drive the telescopic arms 30 to move according to the diameter size specification of the hubs 6, the telescopic arms 30 drive the corresponding moving block 25 to move through the corresponding side suction cups 34, the moving plate 24 is driven to move in the radial direction, and the area of the elastic shielding layer 27 driven by the moving plate 24 is increased or reduced.

The upper end of each central disc 29 is connected with a vertical control rod 36, each control rod 36 is connected with a control arm 37, the axis of each control arm 37 is parallel to the arrangement direction of each hub 6, and the control arms 37 are installed on a mobile manipulator 38. The moving manipulator 38 drives the control arm 37 to move, each control rod 36 on the control arm 37 can drive the central disc 29 to move, after the central disc 29 drives the central disc 23 to be placed on the corresponding hub 6, the central suction disc 35 and the side suction discs 34 are both vacuum suction discs, and the central suction disc 35 and the side suction discs 34 release the central disc 23 and the moving plate 24.

The second box 8 that sprays paint is the same with first box 7's that sprays paint structure, the second mechanism that sprays paint includes that at least two circles along the equal interval distribution of circumference goes up shower nozzle 39 on the second of 8 upside inner walls of second box that sprays paint, shower nozzle 39 all corresponds the circumference setting of wheel hub 6 upper end on each second, movable support seat 3 is when the second box 8 that sprays paint, the upper end of each wheel hub 6 all covers central core 23, the ring channel 40 setting of each location portion 24a embedding wheel hub 6 upper end of central core 23, the left and right sides inner wall of second box 8 that sprays paint all arranges along the direction of height in proper order and is provided with a plurality of second side shower nozzles 41, each second side shower nozzle 41 corresponds wheel hub 6 side setting, each shower nozzle all is linked together the setting with the confession lacquer pipeline, the adjustable setting of the injection angle of each shower nozzle. The central plate 23 can be respectively placed in the upper and lower annular grooves 40 at the upper end of the hub 6, and the second upper spray head 39 and the second side spray head 41 spray a second compound paint layer on the part of the upper end of the hub 6 positioned at the periphery of the front tooling and the periphery of the hub 6.

In order to shield ring 42 location and place on the corresponding wheel hub 6 that comes out from second paint spraying box 8, back way frock feed mechanism is the same with preceding way frock feed mechanism's structure, back way frock feed mechanism includes a plurality of shielding rings 42, shielding ring 42 and the corresponding setting in wheel hub 6 upper end, shielding ring 42 supports in corresponding wheel hub 6 upper end, every shielding ring 42 top all corresponds and is provided with a working disc 43, every working disc 43 lower extreme all corresponds shielding ring 42 and is provided with a plurality of edge suction cups 44 along circumference equidistant, the upper end of each working disc 43 all is connected with vertical control lever 36, each control lever 36 all is connected with control arm 37, control arm 37 axis is parallel with the array orientation of each wheel hub 6, control arm 37 is installed on mobile manipulator 38. The edge suction cup 44 is a vacuum cup.

The third box 9 that sprays paint is the same with first box 7 that sprays paint's structure, and the third mechanism that sprays paint includes that at least two circles along the equal interval distribution of circumference shower nozzle 45 on the third of the box 9 upside inner wall that sprays paint of third, and when movable support seat 3 passed through the third box 9 that sprays paint, shielding ring 42 had all been placed to the upper end of each wheel hub 6, and shower nozzle 45 corresponds each spoke setting of wheel hub 6 on each third. The third upper spray nozzle 45 sprays a third composite paint layer on each spoke of the hub 6.

When the invention is used for painting, a movable support seat 3 moves along a guide rail 2, a plurality of hubs 6 are arranged on each rotating shaft 4 of the movable support seat 3, when the movable support seat 3 passes through a first painting box body 7, a first upper spray head 20, a first side spray head 21 and a first lower spray head 22 of a first painting mechanism respectively paint the hubs 6 integrally from the upper part, the side surface and the lower part, when each hub 6 comes out from the first painting box body 7, a front tooling feeding mechanism respectively places a front tooling for shielding the upper end surface of the hub 6 on each hub 6, a central suction cup 35 adsorbs and fixes the central suction cup 23, each side suction cup 34 respectively adsorbs and fixes a moving block 25 at the upper part of a corresponding moving plate 24, each pushing air cylinder 32 drives each telescopic arm 30 to move according to the diameter size specification of different hubs 6, the telescopic arm 30 drives the corresponding moving block 25 to move through the corresponding side suction cup 34, the moving plates 24 are driven to move radially, and the area of the elastic shielding layer 27 driven by each moving plate 24 is increased or reduced; then the wheel hub 6 enters a second paint spraying box body 8, and each spray nozzle of the second paint spraying mechanism sprays a second composite paint layer on the part, located on the periphery of the front-way tool, of the upper end of the wheel hub 6 and the periphery of the wheel hub 6; then when each wheel hub 6 comes out from the second paint spraying box body 8, the shielding ring 42 is positioned and placed on the corresponding wheel hub 6 coming out from the second paint spraying box body 8 by the rear-end tooling feeding mechanism, then the wheel hub 6 enters the third paint spraying box body 9, and each third upper spray nozzle 45 of the third paint spraying mechanism sprays a third composite paint layer on each spoke of the wheel hub 6. The invention has the advantages that: can realize spraying paint to wheel hub 6's corresponding position automatically, improve wheel hub 6 efficiency of spraying paint, reduce the defective rate of wheel hub 6 production and processing.

The present invention is not limited to the above-mentioned embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts according to the disclosed technical contents, and these substitutions and modifications are all within the protection scope of the present invention.