Automatic coating production line for automobile bumpers

Abstract

The invention discloses an automatic coating production line for automobile bumpers. The automatic coating production line comprises a control cabinet, a carrying track mechanism, a spraying cleaning device, a drying device, a paint spraying device, a charging station and a plurality of workpiece consignment devices. The spraying cleaning device, the drying device, the paint spraying device, the charging station and the workpiece consignment devices are all controlled by the control cabinet in a coordinated mode. According to the automatic coating production line, workpieces to be painted can be placed in a lifting mode through the workpiece carrying device and move along the annular track, on one hand, the stability of workpiece conveying can be guaranteed, the paint spraying positions of the workpieces cannot be shielded, the comprehensiveness of surface paint spraying can be guaranteed, later manual paint make-up is not needed, and the production efficiency is improved; the to-be-charged workpiece consignment device can be moved away from the annular track to be charged through the charging station, so that other workpiece consignment devices with sufficient electric quantity cannot be hindered to continue to work, and automatic continuous operation of a production line is guaranteed.

Description

Technical Field

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

[0002] The car bumper is an important part of the car's appearance. It is a three-dimensional long structure as a whole. When painting it, the existing painting line uses a suspension structure for transportation. This method requires finding multiple suitable hanging points for various types of bumpers so that they can be suspended stably. However, sometimes suitable hanging points cannot be found, and there is a problem that the suspension rod will block the painting spraying, resulting in some places not being painted in place and requiring manual touch-up later, which not only consumes manpower and material resources, but also affects production efficiency. Summary of the invention

[0003] The purpose of the invention is to provide an automated painting production line for automobile bumpers, which can realize lifting-type transportation, does not need to find lifting points, and does not have the problem of paint obstruction, thereby ensuring that the bumper is painted in one time and improving production efficiency.

[0004] Technical solution: The automated coating production line for automobile bumpers of the present invention comprises a control cabinet, a transport track mechanism, a spray cleaning device, a drying device, a paint spraying device, a charging station and a plurality of workpiece consignment devices;

[0005] The transport track mechanism and the charging station together form a circular track, and the spray cleaning device, drying device and paint spraying device are all located on the assembly line formed by the circular track; each workpiece transporting device is used to lift and place each workpiece to be painted, and pass through the spray cleaning device, drying device and paint spraying device in sequence along the circular track, the spray cleaning device sprays and cleans the passing workpieces, the drying device dries the surface of the workpieces after spray cleaning, and the paint spraying device paints the surface of the dried workpieces; the charging station is used to move the workpiece transporting device to be charged away from the circular track for charging; the spray cleaning device, drying device, paint spraying device, charging station and each workpiece transporting device are coordinated and controlled by the control cabinet.

[0006] Furthermore, the transport rail mechanism includes a supporting rail, a driving rack and various rail support frames; the charging station includes a charging control box, a connecting rail, a translation rail, a first translation driving mechanism, a second translation driving mechanism, two switching rails and various charging docking mechanisms; the rail support frame is fixed on the lower side of the supporting rail for horizontally supporting the supporting rail; the driving rack is fixed on the side of the supporting rail for driving in cooperation with the workpiece transporting device; the first translation driving mechanism is installed on the two switching rails, and the connecting rail is installed on the first translation driving mechanism, and the first translation driving mechanism drives the connecting rail to move along the two switching rails from the side of the supporting rail to the head and tail ends of the supporting rail. The two switching rails form a circular track; the second translation drive mechanism is installed on the two switching rails, and the translation rail is installed on the second translation drive mechanism. The translation rail is used to carry the workpiece transporting device to be charged, and the second translation drive mechanism drives the translation rail to move along the two switching rails from the head and tail ends of the support rail to each charging docking mechanism; the charging docking mechanism is used to dock the workpiece transporting device to be charged and charge the docked workpiece transporting device; the charging docking mechanism, the translation rail and the connecting rail are all provided with a docking rack that cooperates with the workpiece transporting device to drive; the first translation drive mechanism and the second translation drive mechanism are both driven and controlled by the charging control box, and the charging control box is wirelessly connected to the control cabinet.

[0007] Furthermore, the workpiece transporting device includes a transport control box, a transport drive unit, a first connecting rod, a second connecting rod, two workpiece multi-point support units and two mobile support units; the transport control box is installed on the transport drive unit, the transport drive unit and the two mobile support units are both used for movably installing on the support rail, the first connecting rod is swingably connected between the transport drive unit and a mobile support unit, and the second connecting rod is swingably connected between the two mobile support units; the two workpiece multi-point support units are respectively installed on the two mobile support units for multi-point support of the workpiece; the transport drive unit is used to cooperate with the driving rack to realize mobile drive; the transport drive unit is driven and controlled by the transport control box, and the transport control box is wirelessly connected to the control cabinet.

[0008] Furthermore, the transport drive unit includes a track mover, a card reader, a travel drive motor, two travel drive gears, a gear mounting frame, an elastic presser and two L-shaped side plates; the track mover is movably installed on the supporting track, and the two L-shaped side plates are symmetrically installed on the track mover and are respectively located on both sides of the supporting track; the two travel drive gears are rotatably installed on the gear mounting frame through two travel driven shafts, and a driven bevel gear is provided on the lower end of the two travel driven shafts; a rotating active shaft is rotatably installed on the gear mounting frame, and two active bevel gears are installed on the rotating active shaft, and the two active bevel gears are respectively meshed with the two driven bevel gears; the travel drive motor is installed on the gear mounting frame for rotationally driving the rotating active shaft; the elastic presser is installed on the L-shaped side plate on one side, and the gear mounting frame The mounting frame is installed on the elastic presser, and the elastic presser elastically pushes the gear mounting frame so that the two travel drive gears are meshed with the drive rack; the transport control box is installed on the top of the track mover; a charging electrode column is arranged on the L-shaped side panel on the other side, and a battery module is detachably installed on the transport control box, and the charging electrode column is electrically connected to the battery module through the charging circuit in the transport control box; a moving position electronic tag is arranged on the supporting rail, a charging position electronic tag is arranged on the translation rail, and a charging docking electronic tag is arranged on the charging docking mechanism; the card reader and the travel drive motor are electrically connected to the transport control box, and the battery module supplies power to the transport control box, the card reader and the travel drive motor, and the card reader reads the tag information of the moving position electronic tag, the charging position electronic tag and the charging docking electronic tag.

[0009] Furthermore, the mobile support unit includes a track mover, a strip adjustment seat, a self-adjusting slider and a height adjustment column; the workpiece multi-point support unit includes a clamping mount, a clamping locking screw and a plurality of workpiece support short rods; the track mover is movably installed on the support track, and the strip adjustment seat is fixed on the top of the track mover; the second connecting rod is swingably connected between the two track movers; a self-adjusting slide groove is provided on the strip adjustment seat, and the self-adjusting slider is slidably installed on the self-adjusting slide groove; the lower end of the height adjustment column is rotatably installed on the self-adjusting slider; an internal thread adjustment tube is provided at the center of the lower side surface of the clamping mount, and the upper end thread of the height adjustment column is screwed and installed in the internal thread adjustment tube; on the clamping mount A clamping guide groove is provided on the top, a clamping guide slider is slidably installed on the clamping guide groove, and a clamping extrusion movable seat is provided on the clamping guide slider; a mounting ring piece is provided on the lower end of the workpiece supporting short rod, and friction ring pieces are provided on the annular surfaces on both sides of the mounting ring piece; a clamping extrusion fixing seat is provided on the clamping mounting seat, one end of the clamping locking screw is fixed on the clamping extrusion fixing seat, and the other end passes through each mounting ring piece and the clamping extrusion movable seat, and the clamping locking screw is parallel to the clamping guide groove; an extrusion locking nut is threadedly installed on the clamping locking screw for locking and pressing the clamping extrusion movable seat; a flexible support sleeve for supporting the workpiece is provided on the upper end of the workpiece supporting short rod.

[0010] Furthermore, the spray cleaning device includes a spray control box, a spray chamber shell, a collecting water tank, a flip-type spray mechanism and a water blowing mechanism; a spray inlet and outlet window is provided on the front and rear sides of the spray chamber shell, and a circular track passes through the spray inlet and outlet windows on the front and rear sides; the flip-type spray mechanism is installed in the spray chamber shell and near the spray inlet and outlet window at the entrance, and is used for spray cleaning the workpieces lifted by the workpiece transporting device; the water blowing mechanism is installed in the spray chamber shell and near the spray inlet and outlet window at the exit, and is used for blowing water on the surface of the workpiece after spray cleaning; the collecting water tank is installed on the inner bottom of the spray chamber shell, and is used for collecting water droplets sprayed and blown down; a recovery water pipe is connected to the collecting water tank, and the recovery water pipe extends out of the spray chamber shell; the spray control box is installed on the outer wall of the spray chamber shell, and is used for driving and controlling the flip-type spray mechanism and the water blowing mechanism, and the spray control box is wirelessly connected to the control cabinet.

[0011] Furthermore, the flip-type spray mechanism includes a shift drive motor, a spray main pipe, a synchronous moving shaft, two arc-shaped tracks and two spray shift seats; a spray water inlet pipe is installed through the side wall of the spray room shell, and a first solenoid valve is installed on the spray water inlet pipe; the two arc-shaped tracks are vertically installed in the spray room shell through the spray installation column, and the two arc-shaped tracks are both straddled above the circular track; the two spray shift seats are movably installed on the two arc-shaped tracks, and the spray main pipe is longitudinally installed between the two spray shift seats; each spray head is installed at intervals on the spray main pipe; A spray connecting pipe is provided in the middle part, and the spray connecting pipe is connected with the spray water inlet pipe through a spray hose; arc-shaped racks are provided on the outer arc edges of the two arc-shaped tracks; the front and rear ends of the synchronous moving shaft are rotatably installed on the two spray shift seats, and a shift driving gear is fixedly installed on the front and rear ends of the synchronous moving shaft, and the shift driving gear is meshed with the arc-shaped rack at the corresponding position; the shift driving motor is installed on a spray shift seat, and drives the synchronous moving shaft to rotate through a worm gear transmission mechanism; the shift driving motor and the first solenoid valve are driven and controlled by the spray control box.

[0012] Furthermore, the drying device includes a drying control box, a drying chamber shell, a hot air conveying mechanism, an exhaust mechanism, a top air supply mechanism, two side air supply mechanisms and two automatic door mechanisms; a drying inlet and outlet window is provided on the front and rear sides of the drying chamber shell, the drying control box is installed on the outer wall of the drying chamber shell, and the annular track passes through the drying inlet and outlet windows on the front and rear sides; the top air supply mechanism is installed on the inner top of the drying chamber shell and is located above the through section of the annular track; the two side air supply mechanisms are installed on the left and right inner walls of the drying chamber shell and are located on the left and right sides of the through section of the annular track; the top air supply mechanism is connected to the outer wall of the drying chamber shell and is located on the left and right sides of the through section of the annular track; the top air supply mechanism is connected to the outer wall of the drying chamber shell and is located on the left and right sides of the through section of the annular track. The ventilation duct is connected with two side air supply mechanisms; the hot air conveying mechanism is installed on the outer top of the drying chamber shell, and is connected with the top air supply mechanism through the air supply main pipe; a wind direction adjustment mechanism is provided on the side air supply mechanism for adjusting the air outlet direction; two automatic door mechanisms are respectively installed on the front and rear sides of the drying chamber shell, for closing the front and rear drying inlet and outlet windows; the exhaust mechanism is installed at the lower part of the drying chamber shell, for exhausting the hot and humid airflow in the drying chamber shell; the hot air conveying mechanism, the exhaust mechanism and the two automatic door mechanisms are all driven and controlled by the drying control box, and the drying control box is wirelessly connected to the control cabinet.

[0013] Furthermore, the paint spraying device includes a paint spraying control box, a paint spraying room shell, a longitudinal moving mechanism, a rotary driving mechanism, a foldable paint spraying bracket, two paint conveying mechanisms, two automatic door mechanisms and various nozzle mechanisms; the paint spraying control box is installed on the outer wall of the paint spraying room shell, and paint inlet and outlet windows are arranged on the front and rear sides of the paint spraying room shell, and the circular track passes through the paint inlet and outlet windows on the front and rear sides; the longitudinal moving mechanism is fixedly installed on the inner top of the paint spraying room shell, the foldable paint spraying bracket is rotatably installed on the longitudinal moving mechanism, and the rotary driving mechanism is installed at the rotary connection between the foldable paint spraying bracket and the longitudinal moving mechanism, and the foldable paint spraying bracket is driven to move longitudinally by the longitudinal moving mechanism, and the rotary driving mechanism is driven to move longitudinally by the rotary driving mechanism. The structure drives the foldable paint spraying bracket to rotate; each nozzle mechanism is distributedly installed on the foldable paint spraying bracket, and each nozzle mechanism sprays paint on the workpiece lifted and transported by the workpiece transporting device, and the foldable paint spraying bracket folds and adjusts the nozzle mechanism; two paint conveying mechanisms are respectively installed on the left and right inner walls of the paint spraying room shell, and are used to convey paint to each nozzle mechanism; two automatic door mechanisms are respectively installed on the front and rear sides of the paint spraying room shell, and are used to close the paint inlet and outlet windows on the front and rear sides; the longitudinal moving mechanism, the rotation driving mechanism, the foldable paint spraying bracket, the two paint conveying mechanisms and the two automatic door mechanisms are all driven and controlled by the paint spraying control box, and the paint spraying control box is wirelessly connected with the control cabinet.

[0014] Furthermore, the foldable paint spraying bracket includes a suspension mounting plate, a swing drive motor, a swing drive screw, a swing sliding seat, a swing drive seat, two swing drive rods and two swing support arms; a swing mounting slot is provided on the left and right sides of the suspension mounting plate, and the middle parts of the two swing support arms are swing-hinged and installed on the two swing mounting slots respectively; a swing drive slide groove is transversely provided on the upper side surface of the suspension mounting plate, the swing sliding seat is slidably installed on the swing drive slide groove, and the swing drive seat is fixed on the swing sliding seat; the swing drive screw is rotatably installed transversely on the suspension mounting plate, and the swing drive screw is screwed through with a through-thread. Installed on the swing drive seat; the swing drive motor is installed on the suspension mounting plate, which is used to drive the swing drive screw to rotate; one end of the two swing drive rods are swing-hinged and installed on the swing connection grooves on the upper ends of the two swing support arms, and the other ends of the two swing drive rods are each provided with a driving strip hole; a swing drive short shaft is provided on the front and rear sides of the swing drive seat, and the two swing drive short shafts are respectively extended into the driving strip holes on the two swing drive rods, and can slide left and right along the driving strip holes; each nozzle mechanism can be detachably installed on the two swing support arms; the swing drive motor is driven and controlled by the paint spraying control box.

[0015] Compared with the prior art, the present invention has the following beneficial effects: the workpiece transporting device can be used to lift and place the workpiece to be painted and move it along the circular track, which can ensure the stability of the workpiece transportation without blocking the painting position of the workpiece, thereby ensuring the comprehensiveness of the surface painting and eliminating the need for manual touch-up painting, thereby improving production efficiency; by using the cooperation of the spray cleaning device and the drying device, the surface of the workpiece can be cleaned before painting to ensure the quality of the paint; by using the charging station, the workpiece transporting device to be charged can be moved away from the circular track for charging, thereby not hindering other workpiece transporting devices with sufficient power to continue working, thereby ensuring the continuous automation of the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the production line of the present invention;

[0017] Figure 2 It is a front structural schematic diagram of the spray cleaning device of the present invention;

[0018] Figure 3 It is a schematic diagram of the internal structure of the spray cleaning device of the present invention;

[0019] Figure 4 It is a front structural schematic diagram of the flip-type spray mechanism of the present invention;

[0020] Figure 5 It is a right side structural schematic diagram of the flip-type spray mechanism of the present invention;

[0021] Figure 6 It is a front structural schematic diagram of the drying device of the present invention;

[0022] Figure 7 It is a schematic diagram of the internal structure of the drying device of the present invention;

[0023] Figure 8 It is a schematic diagram of the installation structure of the top air supply mechanism and two side air supply mechanisms of the present invention;

[0024] Fig. 9 It is a schematic diagram of the internal structure of the side air supply mechanism of the present invention;

[0025] Fig.10 It is a schematic diagram of the partial structure of the rectangular air guide plate of the present invention;

[0026] Fig.11 It is a front structural schematic diagram of the paint spraying device of the present invention;

[0027] Fig.12 It is a schematic diagram of the internal structure of the paint spraying device of the present invention;

[0028] Fig.13 It is a front structural schematic diagram of the foldable paint spraying support of the present invention;

[0029] Fig.14 It is a left-side structural schematic diagram of the foldable paint spraying bracket of the present invention;

[0030] Fig.15 It is a partial structural schematic diagram of the paint conveying mechanism of the present invention;

[0031] Fig.16 It is a schematic diagram of the overall structure of the workpiece transporting device of the present invention;

[0032] Fig.17 It is a schematic diagram of the installation structure of the transport drive unit of the present invention;

[0033] Fig.18 It is a schematic diagram of the installation structure of the elastic presser of the present invention;

[0034] Fig.19 This is a schematic diagram of the battery module installation structure of the present invention;

[0035] Fig. 20 This is a schematic diagram of the installation structure of the workpiece multi-point support unit of the present invention;

[0036] Fig.21 This is a schematic diagram of the structure of a workpiece multi-point support unit of the present invention;

[0037] Fig. 22 It is a schematic diagram of the top view of the charging station of the present invention;

[0038] Fig.23 It is a schematic diagram of the installation structure of the first translation drive mechanism and the second translation drive mechanism of the present invention;

[0039] Fig.24 It is a schematic diagram of the side structure of the charging cabinet of the present invention;

[0040] Fig.25 It is a schematic diagram of the partial structure of the charging cabinet of the present invention;

[0041] Fig.26 It is a schematic diagram of the circuit structure of the present invention. DETAILED DESCRIPTION

[0042] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments.

[0043] like Figure 1-26 As shown, the automated coating production line for automobile bumpers disclosed in the present invention includes: a control cabinet 801, a transport track mechanism, a spray cleaning device, a drying device, a paint spraying device, a charging station, and a plurality of workpiece consignment devices;

[0044] The transport track mechanism and the charging station together form a circular track, and the spray cleaning device, drying device and paint spraying device are all located on the assembly line formed by the circular track; each workpiece transporting device is used to lift and place each workpiece 100 to be painted, and pass through the spray cleaning device, drying device and paint spraying device in sequence along the circular track, the spray cleaning device sprays and cleans the passing workpiece 100, the drying device dries the surface of the workpiece 100 after spray cleaning, and the paint spraying device paints the surface of the dried workpiece 100; the charging station is used to move the workpiece transporting device to be charged away from the circular track for charging; the spray cleaning device, drying device, paint spraying device, charging station and each workpiece transporting device are coordinated and controlled by the control cabinet 801. The workpiece transporting device can be used to lift and place the workpiece 100 to be painted and move it along the circular track. On the one hand, the stability of the transportation of the workpiece 100 can be ensured, and the painting position of the workpiece 100 will not be blocked, thereby ensuring the comprehensiveness of the surface painting without the need for manual touch-up painting, thereby improving production efficiency; by using the cooperation of the spray cleaning device and the drying device, the surface of the workpiece 100 can be cleaned before painting to ensure the quality of the paint; by using the charging station, the workpiece transporting device to be charged can be moved away from the circular track for charging, thereby not hindering other workpiece transporting devices with sufficient power to continue working, thereby ensuring the continuous operation of the production line automation.

[0045] Furthermore, the transport rail mechanism includes a support rail 601, a driving rack 602 and various rail support frames 603; the charging station includes a charging control box 706, a connecting rail 717, a translation rail 711, a first translation drive mechanism, a second translation drive mechanism, two switching rails 701 and various charging docking mechanisms; the rail support frame 603 is fixed on the lower side of the support rail 601, and is used to horizontally support the support rail 601; the driving rack 602 is fixed on the side of the support rail 601, and is used to cooperate with the workpiece transport device for driving; the first translation drive mechanism is installed on the two switching rails 701, and the connecting rail 717 is installed on the first translation drive mechanism, and the first translation drive mechanism drives the connecting rail 717 to move along the two switching rails 701 from the side of the support rail 601 to the support rail The first and second translation drive mechanisms are installed on the two switching rails 701, and the translation rail 711 is installed on the second translation drive mechanism. The translation rail 711 is used to carry the workpiece transporting device to be charged, and the second translation drive mechanism drives the translation rail 711 to move along the two switching rails 701 from the first and second ends of the support rail 601 to each charging docking mechanism; the charging docking mechanism is used to dock the workpiece transporting device to be charged and charge the docked workpiece transporting device; the charging docking mechanism, the translation rail 711 and the connecting rail 717 are all provided with a docking rack 710 that cooperates with the workpiece transporting device to drive; the first translation drive mechanism and the second translation drive mechanism are both driven and controlled by the charging control box 706, and the charging control box 706 is wirelessly connected to the control cabinet 801. The first translation drive mechanism and the second translation drive mechanism are used to translate the connecting rail 717 and the translation rail 711 respectively, so that when the translation rail 711 transports the workpiece transporting device for charging, the connecting rail 717 is connected to the support rail 601 to ensure the integrity of the circular track, which is convenient for other workpiece transporting devices with sufficient power to move in a circular cycle; various charging docking mechanisms can be used to facilitate the charging of multiple workpiece transporting devices, thereby ensuring that multiple workpiece transporting devices can operate normally on the circular track.

[0046] Furthermore, the charging docking mechanism includes a docking rail 712 and a charging cabinet 715. The docking rail 712 is fixedly mounted on the side of the switching rail 701 through a docking bracket, and the docking rail 712 is parallel to the translation rail 711. When the translation rail 711 moves to the docking rail 712, the end thereof is closely docked with the docking rail 712. The docking rack 710 is fixed on the side of the docking rail 712. The charging cabinet 715 is mounted on the side of the docking rail 712 through a cabinet bracket 721. A docking rack 710 is provided on the top of the charging cabinet 715 to dock with the docking rail 712. 12 parallel strip through slots 716; strip limiting through slots 722 are arranged on both side slot edges of the strip through slot 716, a strip conductive strip 723 is installed on the upper and lower side slot edges of the strip limiting through slot 722, and both ends of the strip conductive strip 723 are bent to have slope sections 724, and a conductive support spring 725 is installed between the strip conductive strip 723 and the slot edge of the strip limiting through slot 722; the upper and lower strip conductive strips 723 are used to elastically clamp the charging electrode column 527 for conduction; the strip conductive strip 723 is electrically connected to the charging adapter. The docking rail 712 can be used to support the workpiece transport device at the charging position, and the charging cabinet 715 can be used to charge the docked workpiece transport device; the two strip-shaped conductive bars 723 can be used to elastically clamp the charging electrode column 527 for conductivity, thereby enabling the charging adapter to charge the battery module 504; the conductive support spring 725 can be used to elastically press the strip-shaped conductive bar 723 to ensure the conductive contact reliability between the strip-shaped conductive bar 723 and the charging electrode column 527; the slope section 724 can facilitate the charging electrode column 527 to slide smoothly between the two strip-shaped conductive bars 723.

[0047] Furthermore, the first translation drive mechanism includes a first translation drive motor 702, a first translation drive screw 705 and two translation support seats 718; the second translation drive mechanism includes a second translation drive motor 703, a second translation drive screw 704 and two translation support seats 718; the translation support seats 718 are respectively slidably mounted on the switching track 701, and a track support groove 720 is provided on the side of the switching track 701 along its length direction, and a switching support roller 719 that supports walking in the track support groove 720 is rotatably mounted on the translation support seat 718; the two ends of the connecting track 717 are respectively mounted on the two translation support seats 718 through track support columns, and a connecting drive is connected between the two translation support seats 718 of the first translation drive mechanism. Moving beam 708; the first translation drive screw 705 is installed on the connecting drive beam 708 by a through-thread screwing, and the first translation drive motor 702 is used to drive the first translation drive screw 705 to rotate; the two ends of the translation track 711 are respectively installed on the other two translation support seats 718 through the track support columns, and a translation drive beam 707 is connected between the two translation support seats 718 of the second translation drive mechanism; the second translation drive screw 704 is installed on the translation drive beam 707 by a through-thread screwing, and the second translation drive motor 703 is used to drive the second translation drive screw 704 to rotate; the first translation drive motor 702 and the second translation drive motor 703 are both driven and controlled by the charging control box 706; the charging control box 706 is installed on the control box bracket 709.

[0048] Furthermore, the workpiece transporting device includes a transport control box 502, a transport drive unit, a first connecting rod 505, a second connecting rod 506, two workpiece multi-point support units and two mobile support units; the transport control box 502 is installed on the transport drive unit, and the transport drive unit and the two mobile support units are both used for movably installing on the support rail 601, the first connecting rod 505 is swingably connected between the transport drive unit and a mobile support unit, and the second connecting rod 506 is swingably connected between the two mobile support units; the two workpiece multi-point support units are respectively installed on the two mobile support units for multi-point support of the workpiece 100; the transport drive unit is used to cooperate with the driving rack 602 to realize mobile drive; the transport drive unit is driven and controlled by the transport control box 502, and the transport control box 502 is wirelessly connected to the control cabinet 801. The first connecting rod 505 and the second connecting rod 506 are used to connect the transport drive unit and the two mobile support units in sequence, so that they can pass smoothly at the bending position of the circular track; the two workpiece multi-point support units can provide multi-point support for both ends of the workpiece 100 to ensure the support stability of the workpiece 100.

[0049] Furthermore, the transport drive unit includes a track mover, a card reader 524, a travel drive motor 501, two travel drive gears 521, a gear mounting frame 519, an elastic presser and two L-shaped side plates 505; the track mover is movably mounted on the support track 601, and the two L-shaped side plates 505 are symmetrically mounted on the track mover and are respectively located on both sides of the support track 601; the two travel drive gears 521 are rotatably mounted on the gear mounting frame 519 through two travel driven shafts 520, and are A driven bevel gear 522 is provided at the lower end of each of the two travel driven shafts 520; a rotating driving shaft is rotatably mounted on the gear mounting frame 519, and two driving bevel gears 523 are mounted on the rotating driving shaft, and the two driving bevel gears 523 are respectively meshed with the two driven bevel gears 522; the travel drive motor 501 is mounted on the gear mounting frame 519, and is used to drive the rotating driving shaft to rotate; the elastic presser is mounted on the L-shaped side plate 505 on one side, and the gear mounting frame 519 is mounted on the elastic presser On the track mover, the gear mounting frame 519 is elastically pushed by the elastic presser, so that the two travel drive gears 521 are meshed with the drive rack 602; the transport control box 502 is installed on the top of the track mover; a charging electrode column 527 is provided on the L-shaped side plate 505 on the other side, and a battery module 504 is detachably installed on the transport control box 502, and the charging electrode column 527 is electrically connected to the battery module 504 through the charging circuit in the transport control box 502; a mobile position electronic tag is provided on the support track 601 604, a charging position electronic tag 713 is arranged on the translation track 711, and a charging docking electronic tag 714 is arranged on the charging docking mechanism; the card reader 524 and the travel drive motor 501 are both electrically connected to the transport control box 502, and the battery module 504 supplies power to the transport control box 502, the card reader 524 and the travel drive motor 501, and the card reader 524 reads the label information of the mobile position electronic tag 604, the charging position electronic tag 713 and the charging docking electronic tag 714. The gear mounting frame 519 can be elastically pressed by the elastic presser, so that both the travel drive gears 521 are meshed with the driving rack 602, so that when the driving rack 602 is docked with the docking rack 710 or when the docking rack 710 is docked with the docking rack 710, the docking position movement transition can also be smoothly performed.

[0050] Further, the track mover includes a U-shaped track seat 503, two side limit rollers 511 and each track travel support roller 526; the U-shaped track seat 503 is buckled on the support track 601, and each track travel support roller 526 is rotatably mounted on the inner wall of the vertical side plate of the U-shaped track seat 503, and supports the travel on the upper and lower sides of the track side wings 605 on both sides of the support track 601; the two side limit rollers 511 are rotatably mounted on the rectangular roller holes 507 on the two vertical side plates of the U-shaped track seat 503, respectively, for supporting the travel on the vertical side of the track side wings 605; the L-shaped side plate 505 is mounted on the vertical side plate of the U-shaped track seat 503, and a reinforcing rib plate 525 is provided at the installation position; the card reader 524 is fixed on the inner top of the U-shaped track seat 503. The use of two side limit rollers 511 can reduce the friction resistance of the side during the movement.

[0051] Furthermore, a limiting groove 545 for placing the battery module 504 is provided on the transport control box 502, and a battery limiting seat 543 is provided at the center of the bottom of the limiting groove 545; a battery limiting groove 542 matching the battery limiting seat 543 is provided at the bottom of the battery module 504; a battery locking screw 547 is threadedly installed on the side of the transport control box 502, and a battery locking hole 546 is provided on the side of the battery module 504, and the end of the battery locking screw 547 extends into the battery locking hole 546 to achieve locking of the battery module 504. The cooperation between the limiting groove 545 and the battery limiting seat 543 can enhance the stability of the battery module 504; the cooperation between the battery locking hole 546 and the battery locking screw 547 can achieve locking of the battery module 504.

[0052] Furthermore, the elastic presser includes a gear pressing spring 513, a pressing connecting rod 514, a pressing balance plate 515 and two pressing plug plates 517; one end of the pressing connecting rod 514 is vertically fixed to the vertical side plate of the L-shaped side plate 505, and the other end movably penetrates the center of the pressing balance plate 515, and an end plate 512 is provided on the penetrating end; the gear pressing spring 513 is sleeved on the pressing connecting rod 514, and is elastically supported between the end plate 512 and the pressing balance plate 515; the two pressing plug plates 517 are provided with a plurality of springs, each of which is ... The plug plates 517 are vertically fixed on both ends of the pressing balance plate 515, and the two pressing plug plates 517 are movable through the vertical side plates of the L-shaped side plates 505, and a movable range limiting enclosure 516 is set at the penetration position, so that the two pressing plug plates 517 are clearance-matched at the penetration position, allowing slight horizontal shaking; two pushing connection supports 518 are set on the gear mounting frame 519, and the ends of the two pressing plug plates 517 are respectively horizontally swing-hinged and installed on the two pushing connection supports 518. The swing-hinged installation of the two pressing plug plates 517 and the two pushing connection supports 518 can allow the gear mounting frame 519 to shake slightly, so that the two travel drive gears 521 can also be ensured to have a good meshing state at the bend of the circular track.

[0053] Furthermore, the mobile support unit includes a track mover, a strip adjustment seat 539, a self-adjusting slider 541 and a height adjustment column 509; the workpiece multi-point support unit includes a clamping mount 510, a clamping locking screw 532 and a plurality of workpiece support short rods 535; the track mover is movably mounted on the support track 601, and the strip adjustment seat 539 is fixed on the top of the track mover; the second connecting rod 506 is swingably connected between the two track movers; a self-adjusting slide groove 540 is provided on the strip adjustment seat 539, and the self-adjusting slider 541 is slidably mounted on the self-adjusting slide groove 540; the lower end of the height adjustment column 509 is rotatably mounted on the self-adjusting slider 541; an internally threaded adjustment tube 508 is provided at the center of the lower side surface of the clamping mount 510, and the upper end of the height adjustment column 509 is threadedly screwed and installed in the internally threaded adjustment tube 508; A clamping guide groove 528 is provided, on which a clamping guide slider 529 is slidably installed, and a clamping and extruding movable seat 531 is provided on the clamping guide slider 529; a mounting ring piece 537 is provided on the lower end of the workpiece supporting short rod 535, and friction ring pieces 538 are provided on the annular surfaces on both sides of the mounting ring piece 537; a clamping and extruding fixed seat 530 is provided on the clamping mounting seat 510, one end of the clamping locking screw 532 is fixed on the clamping and extruding fixed seat 530, and the other end passes through each mounting ring piece 537 and the clamping and extruding movable seat 531, and the clamping locking screw 532 is parallel to the clamping guide groove 528; an extrusion locking nut 534 is threadedly installed on the clamping locking screw 532 for locking and pressing the clamping and extruding movable seat 531; a flexible support sleeve 536 for supporting the workpiece 100 is provided on the upper end of the workpiece supporting short rod 535. By utilizing the sliding cooperation between the strip adjustment seat 539 and the self-adjusting slider 541, the self-adjusting slider 541 can be allowed to slide slightly when it moves to the bending position of the annular track, thereby adapting to the distance difference between the two track movers caused by the second connecting rod 506 at this position; by utilizing the cooperation of the mounting ring plate 537, the friction ring plate 538, the clamping locking screw 532 and the extrusion locking nut 534, the support angle adjustment and positioning of each workpiece support short rod 535 can be achieved, thereby meeting the multi-point stable support of the workpiece 100.

[0054] Furthermore, the spray cleaning device includes a spray control box 106, a spray chamber shell 101, a collecting tank 124, a flip-type spray mechanism and a water blowing mechanism; a spray inlet and outlet window 104 is provided on the front and rear sides of the spray chamber shell 101, and a circular track passes through the spray inlet and outlet windows 104 on the front and rear sides; the flip-type spray mechanism is installed in the spray chamber shell 101 and near the spray inlet and outlet window 104 at the entrance, and is used to spray and clean the workpiece 100 lifted by the workpiece transporting device; the water blowing mechanism is installed in the spray chamber shell 101 and near the outlet The spray inlet and outlet window 104 at the opening is used to blow water on the surface of the workpiece 100 after spray cleaning; the collecting water tank 124 is installed on the inner bottom of the spray room shell 101, and is used to collect water droplets from spraying and blowing; the collecting water tank 124 is connected to the recycling water pipe 105, and the recycling water pipe 105 extends out of the spray room shell 101; the spray control box 106 is installed on the outer wall of the spray room shell 101, and is used to drive and control the flip spray mechanism and the blowing mechanism, and the spray control box 106 is wirelessly connected to the control cabinet 801. The flip spray mechanism can realize flip spray cleaning and ensure the cleaning effect.

[0055] Furthermore, a mobile position electronic tag 604 storing spray position information is provided on the support rail 601 in the spray room shell 101. When the card reader 524 reads the mobile position electronic tag 604, it indicates that the workpiece transport device has moved to the bottom of the flip spray mechanism, and spraying can be carried out at this time, which can ensure the reliability of spray cleaning and save water resources.

[0056] Furthermore, the water blowing mechanism includes a water blowing fan 103, a blowing pipe 124 and a blowing box 122; the water blowing fan 103 is installed on the outer top of the spray chamber shell 101, and the blowing box 122 is installed on the inner top of the spray chamber shell 101 through a blowing suspension rod, and the water blowing fan 103 is connected to the blowing box 122 through the blowing pipe 124; various blowing ports 123 are vertically arranged on the lower side of the blowing box 122 to achieve water droplet sweeping on the surface of the workpiece 100; the water blowing fan 103 is driven and controlled by the spray control box 106.

[0057] Furthermore, the flip-type spray mechanism includes a shift drive motor 107, a spray main pipe 113, a synchronous moving shaft 119, two arc-shaped rails 115 and two spray shift seats 111; a spray water inlet pipe 102 is installed through the side wall of the spray room shell 101, and a first solenoid valve 129 is installed on the spray water inlet pipe 102; the two arc-shaped rails 115 are vertically installed in the spray room shell 101 through the spray installation column 118, and the two arc-shaped rails 115 are both straddled above the circular rail; the two spray shift seats 111 are movably installed on the two arc-shaped rails 115, and the spray main pipe 113 is longitudinally installed between the two spray shift seats 111; each spray head 121 is installed at intervals on the spray main pipe 113; A spray connection pipe 120 is connected to the middle of 113, and the spray connection pipe 120 is connected to the spray water inlet pipe 102 through a spray hose 125; arc-shaped racks 114 are provided on the outer arc edges of the two arc-shaped tracks 115; the front and rear ends of the synchronous moving shaft 119 are rotatably mounted on the two spray shift seats 111, and a shift drive gear 117 is fixedly mounted on the front and rear ends of the synchronous moving shaft 119, and the shift drive gear 117 is meshed with the arc-shaped rack 114 at the corresponding position; the shift drive motor 107 is installed on a spray shift seat 111, and drives the synchronous moving shaft 119 to rotate through a worm gear transmission mechanism; the shift drive motor 107 and the first electromagnetic valve 129 are driven and controlled by the spray control box 106. The synchronous moving shaft 119 can realize the synchronous rotation of the two shift drive gears 117, ensure the synchronous movement of the two spray shift seats 111, and ensure the stability of the spray water inlet pipe 102.

[0058] Furthermore, shift support grooves 116 are provided on the front and rear sides of the arc track 115, and shift support rollers 112 are rotatably mounted on the spray shift seat 111 to support and move in the shift support grooves 116, thereby effectively reducing the movement resistance of the spray shift seat 111. A position sensor 130 for detecting whether the workpiece 100 has reached the blowing position is mounted on the inner wall of the spray chamber housing 101, and the position sensor 130 is driven and controlled by the spray control box 106. The worm gear transmission mechanism includes a shift drive worm wheel 110 and a shift drive worm 109; the shift drive worm 109 is rotatably mounted on the spray shift seat 111 through a worm support 108, the shift drive worm wheel 110 is fixedly mounted on the synchronous moving shaft 119, and the shift drive worm wheel 110 is meshed with the shift drive worm 109; the shift drive motor 107 is used to drive the shift drive worm 109 to rotate.

[0059] Furthermore, a spray suspension mechanism is installed on the inner top of the spray room shell 101, and the spray suspension mechanism includes a strip shift seat 126, a shift suspension slider 128 and a suspension tension spring 127; the strip shift seat 126 is horizontally installed on the inner top of the spray room shell 101, and the shift suspension slider 128 is slidably installed on the strip shift seat 126. The upper end of the suspension tension spring 127 is fixed on the shift suspension slider 128, and the lower end is installed on the spray hose 125 through a hanging ring, which is used to suspend the spray hose 125, so as to facilitate the spray hose 125 to move with the spray main pipe 113 and prevent the spray hose 125 from scratching the workpiece 100.

[0060] Furthermore, the drying device includes a drying control box 211, a drying chamber shell 201, a hot air conveying mechanism, an exhaust mechanism, a top air supply mechanism, two side air supply mechanisms and two automatic door mechanisms; a drying inlet and outlet window 217 is provided on the front and rear sides of the drying chamber shell 201, the drying control box 211 is installed on the outer wall of the drying chamber shell 201, and the annular track passes through the drying inlet and outlet windows 217 on the front and rear sides; the top air supply mechanism is installed on the inner top of the drying chamber shell 201 and is located above the through section of the annular track; the two side air supply mechanisms are installed on the left and right inner walls of the drying chamber shell 201 and are located on the left and right sides of the through section of the annular track; the top air supply mechanism is connected to the outer wall of the drying chamber shell 201 The air duct 208 is connected with the two side air supply mechanisms; the hot air delivery mechanism is installed on the outer top of the drying chamber shell 201, and is connected with the top air supply mechanism through the air supply main pipe 205; the side air supply mechanism is provided with a wind direction adjustment mechanism for adjusting the air outlet direction; the two automatic door mechanisms are respectively installed on the front and rear sides of the drying chamber shell 201, and are used to close the drying inlet and outlet windows 217 on the front and rear sides; the exhaust mechanism is installed at the lower part of the drying chamber shell 201, and is used to discharge the hot and humid air flow in the drying chamber shell 201; the hot air delivery mechanism, the exhaust mechanism and the two automatic door mechanisms are all driven and controlled by the drying control box 211, and the drying control box 211 is wirelessly connected with the control cabinet 801. The top air supply mechanism and the two side air supply mechanisms can realize multi-angle hot air drying; the two automatic door mechanisms can control the opening and closing of the drying inlet and outlet windows 217 on the front and rear sides, so as to facilitate the entry and exit of the workpiece consignment device and reduce the heat loss during drying.

[0061] Furthermore, the hot air delivery mechanism includes a hot air box 202, an air inlet 203 and an air filter plate 204; the hot air box 202 is installed on the outer top of the drying chamber shell 201, the air inlet of the hot air box 202 is connected to the air inlet 203, and the air filter plate 204 covers the top opening of the air inlet 203 for filtering the incoming air; the air outlet of the hot air box 202 is connected to the air supply main 205; the exhaust mechanism includes an exhaust fan 212 And two strip air collecting boxes 213; the two strip air collecting boxes 213 are respectively installed on the left and right sides of the lower part of the drying chamber shell 201, and air collecting windows are provided on the opposite sides of the two strip air collecting boxes 213, and air equalizing hole plates 214 are installed on the air collecting windows; the two strip air collecting boxes 213 are connected to the air inlet of the exhaust fan 212 through the exhaust pipe 215; the hot air box 202 and the exhaust fan 212 are both driven and controlled by the drying control box 211.

[0062] Furthermore, the top air supply mechanism includes a top bellows 206 and a bellows hanger 219; the top bellows 206 is installed on the inner top of the drying chamber shell 201 through the bellows hanger 219; a top air outlet 207 is vertically arranged on the lower side of the top bellows 206; the side air supply mechanism includes a side bellows 209 and a bellows bracket 210; the side bellows 209 are installed on the inner wall of the drying chamber shell 201 through the bellows bracket 210; side blowing windows 220 are arranged on the opposite side walls of the two side bellows 209; the wind direction adjustment mechanism is installed at the side blowing windows 220; and the air duct 208 is connected between the top bellows 206 and the side bellows 209.

[0063] Furthermore, the wind direction adjustment mechanism includes an adjustment support column 222, each adjustment support block 223 and each rectangular air guide plate 218; the front and rear ends of the rectangular air guide plate 218 are rotatably mounted on the front and rear inner walls of the side bellows 209 through the end surface support short shaft 221, and the rectangular air guide plate 218 extends out of the side blowing window 220; the adjustment support column 222 is rotatably mounted in the side bellows 209, and the lower end extends out of the side bellows 209, and an adjustment handle 216 is provided on the extended end; an adjustment external thread 225 is provided on the adjustment support column 222 , each adjustment support block 223 is vertically provided with a lifting adjustment threaded hole 227, and the adjustment support column 222 is installed on the lifting adjustment threaded hole 227 by screwing the adjustment external thread 225 through the thread; the front and rear outer walls of the adjustment support block 223 are horizontally provided with an adjustment slide 224, and a rectangular adjustment notch 226 is provided in the middle of the inner side of the rectangular air guide plate 218; the adjustment support block 223 is located at the rectangular adjustment notch 226, and a sliding adjustment support short column 228 extending into the adjustment slide 224 is provided on the groove edge of the rectangular adjustment notch 226. The wind direction adjustment mechanism can adjust the hot air direction according to the size of the workpiece 100, thereby ensuring the drying effect of the workpiece 100; the synchronization adjustment of each rectangular air guide plate 218 is achieved by cooperating with each adjustment support block 223 and the adjustment external thread 225.

[0064] Furthermore, the paint spraying device includes a paint spraying control box 303, a paint spraying room shell 301, a longitudinal moving mechanism, a rotary driving mechanism, a foldable paint spraying bracket, two paint conveying mechanisms, two automatic door mechanisms and various nozzle mechanisms; the paint spraying control box 303 is installed on the outer wall of the paint spraying room shell 301, and paint spraying inlet and outlet windows 308 are arranged on the front and rear sides of the paint spraying room shell 301, and the circular track passes through the paint spraying inlet and outlet windows 308 on the front and rear sides; the longitudinal moving mechanism is fixedly installed on the inner top of the paint spraying room shell 301, the foldable paint spraying bracket is rotatably installed on the longitudinal moving mechanism, and the rotary driving mechanism is installed at the rotary connection between the foldable paint spraying bracket and the longitudinal moving mechanism, and the foldable paint spraying bracket is driven to move longitudinally by the longitudinal moving mechanism, and the foldable paint spraying bracket is driven to move longitudinally by the rotary driving mechanism. The driving mechanism drives the foldable paint spraying bracket to rotate; each nozzle mechanism is distributedly installed on the foldable paint spraying bracket, and each nozzle mechanism sprays paint on the workpiece 100 lifted and transported by the workpiece transporting device, and the foldable paint spraying bracket folds and adjusts the nozzle mechanism; two paint conveying mechanisms are respectively installed on the left and right inner walls of the paint spraying room shell 301, and are used to convey paint to each nozzle mechanism; two automatic door mechanisms are respectively installed on the front and rear sides of the paint spraying room shell 301, and are used to close the paint inlet and outlet windows 308 on the front and rear sides; the longitudinal moving mechanism, the rotating driving mechanism, the foldable paint spraying bracket, the two paint conveying mechanisms and the two automatic door mechanisms are all driven and controlled by the paint spraying control box 303, and the paint spraying control box 303 is wirelessly connected to the control cabinet 801.

[0065] Furthermore, the longitudinal movement mechanism includes a longitudinal movement drive motor 305, a longitudinal movement bar seat 304, a longitudinal movement drive screw and a longitudinal movement suspension rod 306; the longitudinal movement bar seat 304 is longitudinally fixedly installed on the inner top of the paint spray booth shell 301, and a suspension T-shaped slide groove is longitudinally arranged on the lower side of the longitudinal movement bar seat 304; a suspension T-shaped slider is slidably installed in the suspension T-shaped slide groove; the longitudinal movement drive screw is rotatably installed in the suspension longitudinal slide groove, and is screwed on the suspension T-shaped slider by a through thread; the upper end of the longitudinal movement suspension rod 306 is fixed on the suspension T-shaped slider, and the lower end of the longitudinal movement suspension rod 306 is rotatably installed on the suspension mounting plate 307 of the folding paint spray bracket; the longitudinal movement drive motor 305 is installed on the longitudinal movement bar seat 304, and is used to rotationally drive the longitudinal movement drive screw; the longitudinal movement drive motor 305 is driven and controlled by the paint spray control box 303. The rotary drive mechanism includes a rotary drive motor 339, a rotary drive worm 338 and a rotary drive worm wheel 337; the rotary drive worm wheel 337 is fixedly mounted on the longitudinal suspension rod 306, the rotary drive worm 338 is rotatably mounted on the suspension mounting plate 307 of the folding paint spraying bracket, and the rotary drive worm 338 is meshed with the rotary drive worm wheel 337; the rotary drive motor 339 is mounted on the suspension mounting plate 307, and is used to rotationally drive the rotary drive worm 338; the rotary drive motor 339 is driven and controlled by the paint spraying control box 303.

[0066] Furthermore, the paint conveying mechanism includes a paint inlet pipe 302, a paint distribution box 315, a sliding support beam 320 and a paint spraying sliding seat 314; the paint inlet pipe 302 is installed on the side wall of the paint spraying room shell 301, and a second solenoid valve 344 is installed on the paint inlet pipe 302; the sliding support beam 320 is longitudinally fixed on the inner wall of the paint spraying room shell 301, and sliding limit convex strips 321 are longitudinally arranged in the middle of the upper and lower sides of the sliding support beam 320; the paint spraying sliding seat 314 is movably buckled on the sliding support beam 320, and various longitudinal support rollers 322 are rotatably installed on the paint spraying sliding seat 314, and the longitudinal support rollers 322 are divided into The two sides of the sliding limit convex strips 321 arranged on the corresponding sides ensure the stability of the longitudinal movement of the paint spraying sliding seat 314; the paint distribution box 315 is fixed on the paint spraying sliding seat 314; the paint distribution box 315 is connected to the suspension mounting plate 307 of the foldable paint spraying bracket through the connecting cable 323, and the end of the connecting cable 323 is pressed and fixed by the bolt pressing seat 319; the paint inlet 318 of the paint distribution box 315 is connected to the paint inlet pipe 302 through the paint main hose 312, and each paint branch outlet 317 of the paint distribution box 315 is connected to each nozzle mechanism through the paint branch hose 313; the second solenoid valve 344 is driven and controlled by the paint spraying control box 303. By using the cooperation of the connecting cable 323, the sliding support beam 320 and the paint spraying sliding seat 314, the paint distribution box 315 can move longitudinally with the foldable paint spraying bracket to prevent the paint branch hose 313 from being excessively pulled.

[0067] Furthermore, the automatic door mechanism includes an in-and-out door drive motor, a door panel support rail 407, a door panel drive chain 408, an upper support bar 402, a lower support bar 403, two support sprockets 409 and two door panels 401; the lower support bar 403 on the drying device is horizontally installed below the lower side edge of the drying in-and-out window 217, and the lower support bar 403 on the painting device is horizontally installed below the lower side edge of the painting in-and-out window 308; the upper support bar 402 on the drying device is horizontally installed The upper side support bar 402 on the paint spraying device is installed above the upper side edge of the drying inlet and outlet window 217, and is installed horizontally above the upper side edge of the paint spraying inlet and outlet window 308; a lower side limit groove is horizontally arranged on the upper side surface of the lower side support bar 403, and a strip-shaped limit hole is horizontally arranged on the upper side support bar 402; the lower side edges of the two door panels 401 are movably inserted into the lower side limit groove, and the upper ends of the two door panels 401 pass through the strip-shaped limit hole; each lateral support roller 405 is arranged at the upper end of the two door panels 401 , each lateral support roller 405 supports walking on the upper support bar 402; the door panel support rail 407 is horizontally installed above the upper support bar 402; two support sprockets 409 are rotatably installed at both ends of the door panel support rail 407, and the door panel drive chain 408 is driven around the two support sprockets 409; the in-and-out door drive motor is used to drive one of the support sprockets 409 to rotate; a drive connection block 406 is provided at the upper end of each of the two door panels 401, and the two drive connection blocks 406 are connected to the two drive connection blocks 406. The moving connection blocks 406 are all slidably mounted on the door panel support rail 407; the two driving connection blocks 406 are respectively connected to the upper chain and the lower chain of the door panel drive chain 408 through the chain connection bar; the two door panels 401 are provided with avoidance notches 404 for avoiding the support rail 601 and the drive rack 602; the in-and-out door drive motor on the drying device is driven and controlled by the drying control box 211, and the in-and-out door drive motor on the painting device is driven and controlled by the painting control box 303. The two driving connection blocks 406 are respectively connected to the upper and lower door panel drive chains 408, so as to realize the relative movement of the two door panels 401; the door panel support rail 407 can enhance the stability of the movement of the two driving connection blocks 406.

[0068] Furthermore, the foldable paint spraying bracket includes a suspension mounting plate 307, a swing drive motor 328, a swing drive screw 327, a swing sliding seat 324, a swing drive seat 325, two swing drive rods 309 and two swing support arms 310; a swing mounting slot 341 is provided on the left and right sides of the suspension mounting plate 307, and the middle parts of the two swing support arms 310 are swing-hinged and installed on the two swing mounting slots 341 respectively; a swing drive slide groove is transversely provided on the upper side surface of the suspension mounting plate 307, the swing sliding seat 324 is slidably installed on the swing drive slide groove, and the swing drive seat 325 is fixed on the swing sliding seat 324; the swing drive screw 327 is rotatably installed transversely on the suspension mounting plate 307, and the swing drive screw 327 is screwed into a through-thread. Installed on the swing drive seat 325; the swing drive motor 328 is installed on the suspension mounting plate 307, and is used to rotationally drive the swing drive screw 327; one end of the two swing drive rods 309 are swing-hinged and installed on the swing connection slots 340 on the upper ends of the two swing support arms 310, and the other ends of the two swing drive rods 309 are each provided with a driving bar hole 323; a swing drive short shaft 326 is provided on the front and rear sides of the swing drive seat 325, and the two swing drive short shafts 326 are respectively extended into the driving bar holes 323 on the two swing drive rods 309, and can slide left and right along the driving bar holes 323; each nozzle mechanism can be detachably installed on the two swing support arms 310; the swing drive motor 328 is driven and controlled by the paint spraying control box 303. Two swing drive short shafts 326 are respectively matched with the two drive bar holes 323, so that when the swing drive rod 309 is pulled to one side, the swing drive rod 309 on the other side will not be pulled, so that only one swing support arm 310 can be driven up as needed at a time to avoid the workpiece 100, and the nozzle mechanism on the other swing support arm 310 is used to spray paint on the end surface of the workpiece 100.

[0069] Furthermore, the nozzle mechanism includes a positioning sleeve 311, a height positioning bolt 334 and a nozzle pipe 316; the positioning sleeve 311 is slidably mounted on the swing support arm 310, the height positioning bolt 334 is threadedly screwed on the positioning sleeve 311, and the end of the height positioning bolt 334 is pressed on the swing support arm 310 to achieve positioning; a strip through hole 342 is provided on the swing support arm 310, and a rectangular through hole 343 is provided on the positioning sleeve 311; an angle adjustment support is provided at the rectangular through hole 343. The nozzle pipe 316 is rotatably mounted on the angle adjustment support 333 through the angle adjustment shaft; an angle positioning disc 335 is fixedly mounted on the angle adjustment shaft, and an angle positioning bolt 336 is threadedly mounted on the angle adjustment support 333, and the end of the angle positioning bolt 336 is pressed on the angle positioning disc 335; the paint branch hose 313 passes through the rectangular through hole 343 and the strip through hole 342 and is connected to one end of the nozzle pipe 316, and a paint nozzle 345 is installed on the other end of the nozzle pipe 316. The height position of the nozzle pipe 316 can be adjusted by the cooperation of the positioning sleeve 311 and the height positioning bolt 334; the angle of the nozzle pipe 316 can be adjusted and positioned by the cooperation of the angle positioning disc 335 and the angle positioning bolt 336. A limiting support mechanism is provided on the lower side of the suspension mounting plate 307 and near the swing mounting notch 341; the limiting support mechanism includes a limiting support column 329, a rebound tension spring 331, a limiting support cross bar 330 and a limiting support fork 332; the limiting support column 329 is fixed on the lower side of the suspension mounting plate 307, one end of the limiting support cross bar 330 is fixed on the limiting support column 329, and the other end is fixed on the limiting support fork 332, and the limiting support fork 332 provides limiting support for the swing support arm 310; one end of the rebound tension spring 331 is connected to the limiting support column 329, and the other end is connected to the swing support arm 310, and the rebound tension spring 331 pulls the swing support arm 310 to be close to the limiting support fork 332. The rebound tension spring 331 can pull the swing support arm 310, so that the stability of the swing support arm 310 is guaranteed during painting.

[0070] In the automated coating production line for automobile bumpers disclosed in the present invention, the main control coordination is completed by wireless communication and coordination among the control cabinet 801, the charging control box 706, the transport control box 502, the spray control box 106, the drying control box 211 and the paint control box 303.The control cabinet 801 is provided with a main controller, a memory, a main wireless communication module, a display screen and a key panel, and the main controller is electrically connected to the memory, the main wireless communication module, the display screen and the key panel respectively; the spray control box 106 is provided with a first controller, a first wireless communication module, a shift drive circuit and a first fan drive circuit, and the first controller is electrically connected to the first wireless communication module, the first solenoid valve 129, the position sensor 130, the shift drive circuit and the first fan drive circuit respectively, the first controller drives and controls the shift drive motor 107 through the shift drive circuit, and the first controller drives and controls the water blowing fan 103 through the first fan drive circuit; the drying control box 211 is provided with a second controller, a second wireless communication module, a shift drive circuit and a first fan drive circuit. The second controller is electrically connected to the second wireless communication module, the first electric control switch, the second fan drive circuit and the two inlet and outlet door drive circuits respectively. The second controller starts and stops the hot air box 202 through the first electric control switch. The second controller starts and stops the exhaust fan 212 through the second fan drive circuit. The second controller drives and controls the two inlet and outlet door drive motors of the drying device through the two inlet and outlet door drive circuits respectively. The paint spraying control box 303 is provided with a third controller, a third wireless communication module, a rotation drive circuit, a swing drive circuit, a longitudinal movement drive circuit and the two inlet and outlet door drive circuits. The third controller is electrically connected to the second solenoid valve 303 respectively. 44. The third wireless communication module, the rotation drive circuit, the swing drive circuit, the longitudinal drive circuit and the two in-and-out door drive circuits are electrically connected. The third controller drives and controls the rotation drive motor 339, the swing drive circuit and the longitudinal drive circuit respectively. The third controller drives and controls the two in-and-out door drive motors of the paint spraying device respectively through the two in-and-out door drive circuits. The charging control box 706 is provided with a fourth controller, a fourth wireless communication module, a first translation drive circuit and a second translation drive circuit. The fourth controller is electrically connected to the fourth wireless communication module, the first translation drive circuit and the second translation drive circuit respectively. The fourth controller drives and controls the two in-and-out door drive motors of the paint spraying device respectively through the two in-and-out door drive circuits. The first translation drive circuit and the second translation drive circuit respectively drive and control the first translation drive motor 702 and the second translation drive motor 703; the transport control box 502 is provided with a fifth controller, a voltage acquisition circuit, a fifth wireless communication module and a walking drive circuit, the fifth controller is electrically connected to the card reader 524, the voltage acquisition circuit, the fifth wireless communication module and the walking drive circuit respectively, the fifth controller acquires the voltage of the battery module 504 through the voltage acquisition circuit, and the fifth controller drives and controls the walking drive motor 501 through the walking drive circuit; the main wireless communication module is wirelessly connected to the first wireless communication module, the second wireless communication module, the third wireless communication module, the fourth wireless communication module and the fifth wireless communication module respectively.

[0071] When the automatic coating production line for automobile bumpers disclosed in the present invention is in operation, a worker first adjusts the support angle of each workpiece support short rod 535 according to the model of the workpiece 100, so that the two workpiece multi-point support units can provide stable multi-point support for the workpiece 100; then the worker places each workpiece 100 to be painted on the two workpiece multi-point support units of each workpiece transport device;

[0072] After the control cabinet 801 is started through the key panel, the main controller starts each workpiece transporting device in sequence according to the set time sequence, and the main controller sends a control signal to the corresponding fifth controller through the wireless communication of the main wireless communication module and the fifth wireless communication module, and the fifth controller controls the travel drive motor 501 to start working, so that the corresponding workpiece transporting device lifts a workpiece 100 to be painted and moves along the support track 601;

[0073] First, enter the spray cleaning device. When the card reader 524 reads the moving position electronic tag 604 indicating the spray position, the fifth controller controls the travel drive motor 501 to stop, and at the same time sends information that the spray position has been reached to the main controller through wireless communication. The main controller sends a control signal to the first controller through wireless communication between the main wireless communication module and the first wireless communication module. The first controller controls the first solenoid valve 129 and the shift drive motor 107, so that each spray head 121 sprays and cleans the workpiece 100 all over. After the spraying is completed, the first controller sends the spray completion information to the main controller, and at the same time controls the first solenoid valve 129 and the shift drive motor 107 to stop spraying. Then the main controller sends a control signal to the fifth controller, and the fifth controller controls the travel drive motor 501 to start working, so that the corresponding workpiece transporting device lifts the workpiece 100 and continues to move along the support rail 601. When the position sensor 130 detects that the workpiece 100 passes by, the first controller controls the water blowing fan 103 to start working, and blows water on the surface of the workpiece 100 to reduce the residual water droplets on the surface.

[0074] When the workpiece 100 moves along the support rail 601 into the drying device, and the card reader 524 reads the moving position electronic tag 604 indicating the drying position, the fifth controller controls the travel drive motor 501 to stop, and at the same time sends the information that the drying position has been reached to the main controller through wireless communication. The main controller sends a control signal to the second controller through the wireless communication of the main wireless communication module and the second wireless communication module, and the second controller drives and controls the in-and-out door drive motor, thereby closing the two drying in-and-out windows 217 on the front and rear sides, and then the second controller controls the hot air box 202 and the exhaust fan 21 2 performs startup control, so that hot air blows the surface of the workpiece 100, and the hot and humid air flow is discharged from the exhaust fan 212. After the drying time is reached, the second controller sends the drying completion information to the main controller through wireless communication, and controls the hot air box 202 and the exhaust fan 212 to stop working, and controls the two inlet and outlet door drive motors to open the two drying inlet and outlet windows 217. The main controller sends a control command to the fifth controller, and the fifth controller controls the travel drive motor 501 to start working, so that the corresponding workpiece transport device lifts the workpiece 100 and continues to move along the support track 601;

[0075] When the workpiece 100 moves along the support track 601 into the paint spraying device, and the card reader 524 reads the moving position electronic tag 604 indicating the paint spraying position, the fifth controller controls the travel drive motor 501 to stop, and at the same time sends the information of reaching the paint spraying position to the main controller through wireless communication. The main controller sends a control signal to the third controller through the wireless communication of the main wireless communication module and the third wireless communication module. The third controller drives and controls the door entry and exit drive motor, thereby closing the two paint entry and exit windows 308 on the front and rear sides. The third controller then drives and controls the rotation drive motor 339, the swing drive motor 328, the longitudinal movement drive motor 305 and the second solenoid valve 344. The left and right side surfaces of the workpiece 100 are first sprayed with paint, and then folded. The swing support arm 310 on one side is stacked up, and then the suspension mounting plate 307 is rotated to use the various nozzle mechanisms on the swing support arm 310 on the other side to spray paint on the end of the workpiece 100. After the painting is completed, the third controller sends the information of the completion of the painting to the main controller through wireless communication, and at the same time controls the rotation drive motor 339, the swing drive motor 328, and the longitudinal drive motor 305 to stop working, and controls the two inlet and outlet drive motors to open the two paint inlet and outlet windows 308. The main controller sends a control command to the fifth controller, and the fifth controller controls the travel drive motor 501 to start working, so that the corresponding workpiece transporting device lifts the workpiece 100 and continues to move along the support track 601 to the unloading side for the worker to take down the workpiece 100;

[0076] After the workpiece transporting device completes a cycle of painting and transporting the workpiece 100, the fifth controller determines whether the voltage of the battery module 504 collected by the voltage collection circuit is lower than the set low voltage threshold. If so, the fifth controller sends a charging request message to the main controller via the wireless communication between the fifth wireless communication module and the main wireless communication module. The main controller then sends a control signal to the fourth controller via the wireless communication between the main wireless communication module and the fourth wireless communication module. The fourth controller drives and controls the first translation drive motor 702 and the second translation drive motor 703, moves the connecting rail 717 away from the support rail 601, and docks the translation rail 711 to the support rail 601. The main controller then communicates wirelessly with the fifth controller, and the fifth controller controls the travel drive motor 501, so that the workpiece transporting device moves to the charging position. When the card reader 524 reads the charging When the position electronic tag 713 is reached, the workpiece transport device stops on the translation track 711 and wirelessly communicates with the main controller, indicating that the charging position has been reached. The main controller then communicates with the fourth controller, and the fourth controller drives the second translation drive motor 703 to move the translation track 711 to a docking track 712 for docking. The fourth controller then communicates with the main controller to indicate that the docking is completed. At the same time, the fourth controller drives the first translation drive motor 702 to dock the connecting track 717 to the support track 601. The main controller then communicates with the fifth controller to drive and control the travel drive motor 501, so that the workpiece transport device moves to the docking track 712. When the card reader 524 reads the charging docking electronic tag 714, the travel drive motor 501 is stopped. At this time, the strip-shaped conductive strip 723 is in conductive contact with the corresponding charging electrode column 527 to realize charging of the battery module 504.

[0077] When the voltage of the battery module 504 collected by the voltage collection circuit is higher than the set high-voltage threshold, it indicates that charging is completed, and the fifth controller sends charging completion information to the main controller through wireless communication, and then the main controller sends a control signal to the fourth controller through wireless communication, and the fourth controller controls the second translation drive motor 703 to move the translation track 711 to the corresponding docking track 712 for docking, and then the fourth controller communicates with the main controller to indicate that the docking is completed, and then the main controller communicates with the fifth controller, and the fifth controller drives and controls the travel drive motor 501 to move the workpiece transport device to the translation track 711. When the card reader 524 reads the charging position electronic tag 713, it stops on the translation track 711 and communicates wirelessly to the main controller. The main controller communicates with the fourth controller, and the fourth controller controls the first translation drive motor 702 to move the connecting rail 717 away from the support rail 601, and then controls the second translation drive motor 703 to move the translation rail 711 to dock with the support rail 601, and then communicates with the main controller to indicate that it has moved to the docking position, and then the main controller communicates wirelessly with the fifth controller, and the fifth controller drives the travel drive motor 501 to make the workpiece transporting device leave the translation rail 711, and then the main controller communicates with the fourth controller, and the fourth controller drives and controls the first translation drive motor 702 and the second translation drive motor 703 to move the translation rail 711 away from the support rail 601 and dock the connecting rail 717 to the support rail 601.

Claims

1. An automated coating production line for automobile bumpers, characterized in that: It includes a control cabinet (801), a transport track mechanism, a spray cleaning device, a drying device, a painting device, a charging station and a plurality of workpiece transport devices; The transport track mechanism and the charging station together form a circular track, and the spray cleaning device, the drying device and the paint spraying device are all located on the assembly line formed by the circular track; each workpiece transport device is used to lift and place each workpiece (100) to be painted, and pass through the spray cleaning device, the drying device and the paint spraying device in sequence along the circular track, the spray cleaning device sprays and cleans the workpiece (100) passing through, the drying device dries the surface of the workpiece (100) after spray cleaning, and the paint spraying device paints the surface of the dried workpiece (100); the charging station is used to move the workpiece transport device to be charged away from the circular track for charging; the spray cleaning device, the drying device, the paint spraying device, the charging station and each workpiece transport device are coordinated and controlled by the control cabinet (801).

2. The automobile bumper automatic painting production line according to claim 1 is characterized by: The transport track mechanism comprises a support track (601), a drive rack (602) and various track support frames (603); the charging station comprises a charging control box (706), a connecting track (717), a translation track (711), a first translation drive mechanism, a second translation drive mechanism, two switching tracks (701) and various charging docking mechanisms; The track support frame (603) is fixed on the lower side of the support track (601) and is used to horizontally support the support track (601); the driving rack (602) is fixed on the side of the support track (601) and is used to cooperate with the workpiece transport device for driving; the first translation drive mechanism is installed on the two switching tracks (701), and the connecting track (717) is installed on the first translation drive mechanism, and the first translation drive mechanism drives the connecting track (717) to move along the two switching tracks (701) from the side of the support track (601) to the first and last ends of the support track (601) to form a circular track; The second translation drive mechanism is mounted on the two switching rails (701), and the translation rail (711) is mounted on the second translation drive mechanism. The translation rail (711) is used to carry the workpiece transport device to be charged. The second translation drive mechanism drives the translation rail (711) to move along the two switching rails (701) from the front and rear ends of the support rail (601) to each charging docking mechanism; the charging docking mechanism is used to dock the workpiece transport device to be charged and charge the docked workpiece transport device; the charging docking mechanism, the translation rail (711) and the connecting rail (717) are all provided with a docking rack (710) that cooperates with the workpiece transport device to drive the docking rack; the first translation drive mechanism and the second translation drive mechanism are both driven and controlled by the charging control box (706), and the charging control box (706) is wirelessly connected to the control cabinet (801).

3. The automated coating production line for automobile bumpers according to claim 2, characterized in that: The workpiece transport device comprises a transport control box (502), a transport drive unit, a first connecting rod (505), a second connecting rod (506), two workpiece multi-point support units and two mobile support units; the transport control box (502) is installed on the transport drive unit, the transport drive unit and the two mobile support units are both used for movably installing on a support track (601), the first connecting rod (505) is swingably connected between the transport drive unit and one mobile support unit, and the second connecting rod (506) is swingably connected between the two mobile support units; The two workpiece multi-point support units are respectively mounted on the two mobile support units and are used to provide multi-point support for the workpiece (100); the transport drive unit is used to cooperate with the drive rack (602) to achieve mobile drive; the transport drive unit is driven and controlled by the transport control box (502), and the transport control box (502) is wirelessly connected to the control cabinet (801).

4. The automated coating production line for automobile bumpers according to claim 3 is characterized in that: The transport drive unit comprises a track mover, a card reader (524), a travel drive motor (501), two travel drive gears (521), a gear mounting frame (519), an elastic presser and two L-shaped side plates (505); the track mover is movably mounted on a support track (601), and the two L-shaped side plates (505) are symmetrically mounted on the track mover and are respectively located on both sides of the support track (601); the two travel drive gears (521) are rotatably mounted on the gear mounting frame (519) through two travel driven shafts (520), and are rotated on the two travel driven shafts (520). A driven bevel gear (522) is arranged on the lower end of each driving shaft (520); a rotating driving shaft is rotatably mounted on a gear mounting frame (519), and two driving bevel gears (523) are mounted on the rotating driving shaft, and the two driving bevel gears (523) are respectively meshed with the two driven bevel gears (522); a travel drive motor (501) is mounted on the gear mounting frame (519) for rotationally driving the rotating driving shaft; an elastic presser is mounted on an L-shaped side plate (505) on one side, and the gear mounting frame (519) is mounted on the elastic presser, and the elastic presser is used to rotate the rotating driving shaft. The device elastically pushes the gear mounting frame (519) so that the two travel drive gears (521) are meshed with the drive rack (602); the transport control box (502) is installed on the top of the track mover; a charging electrode column (527) is provided on the L-shaped side plate (505) on the other side, and a battery module (504) is detachably installed on the transport control box (502), and the charging electrode column (527) is electrically connected to the battery module (504) through the charging circuit in the transport control box (502); a mobile position electronic tag (604) is provided on the support track (601), and a battery module (504) is detachably installed on the transport control box (502), and the charging electrode column (527) is electrically connected to the battery module (504) through the charging circuit in the transport control box (502); a mobile position electronic tag (604) is provided on the support track (601), and a battery module (504) is detachably installed on the transport control box (502). A charging position electronic tag (713) is arranged on the translation track (711), and a charging docking electronic tag (714) is arranged on the charging docking mechanism; the card reader (524) and the travel drive motor (501) are both electrically connected to the transport control box (502), the battery module (504) supplies power to the transport control box (502), the card reader (524) and the travel drive motor (501), and the card reader (524) reads the tag information of the mobile position electronic tag (604), the charging position electronic tag (713) and the charging docking electronic tag (714).

5. The automated coating production line for automobile bumpers according to claim 3 is characterized in that: The mobile support unit includes a track mover, a strip adjustment seat (539), a self-adjusting slider (541) and a height adjustment column (509); the workpiece multi-point support unit includes a clamping mounting seat (510), a clamping locking screw (532) and a plurality of workpiece support short rods (535); The track mover is movably mounted on the support track (601), and the strip adjustment seat (539) is fixed on the top of the track mover; the second connecting rod (506) is swingably connected between the two track movers; a self-adjusting slide groove (540) is arranged on the strip adjustment seat (539), and a self-adjusting slider (541) is slidably mounted on the self-adjusting slide groove (540); the lower end of the height adjustment column (509) is rotatably mounted on the self-adjusting slider (541); an internal thread adjustment tube (508) is arranged at the center of the lower side surface of the clamping mounting seat (510), and the upper end of the height adjustment column (509) is threadedly screwed in the internal thread adjustment tube (508); a clamping guide groove (528) is arranged on the clamping guide groove (528), and a clamping guide slider (529) is slidably mounted on the clamping guide slider (529); A clamping and extruding movable seat (531) is provided; a mounting ring sheet (537) is provided on the lower end of the workpiece supporting short rod (535), and friction ring sheets (538) are provided on the annular surfaces on both sides of the mounting ring sheet (537); a clamping and extruding fixed seat (530) is provided on the clamping and extruding fixed seat (530), one end of a clamping and locking screw (532) is fixed on the clamping and extruding fixed seat (530), and the other end passes through each mounting ring sheet (537) and the clamping and extruding movable seat (531), and the clamping and locking screw (532) is parallel to the clamping guide groove (528); an extrusion locking nut (534) is threadedly installed on the clamping and locking screw (532) for locking and pressing the clamping and extruding movable seat (531); and a flexible support sleeve (536) for supporting the workpiece (100) is provided on the upper end of the workpiece supporting short rod (535).

6. The automated coating production line for automobile bumpers according to claim 1, characterized in that: The spray cleaning device comprises a spray control box (106), a spray chamber shell (101), a collecting tank (124), a flip-type spray mechanism and a water blowing mechanism; a spray inlet and outlet window (104) is arranged on the front and rear sides of the spray chamber shell (101), and a circular track passes through the spray inlet and outlet windows (104) on the front and rear sides; the flip-type spray mechanism is installed in the spray chamber shell (101) and near the spray inlet and outlet window (104) at the entrance, and is used for spray cleaning the workpiece (100) lifted by the workpiece transporting device; the water blowing mechanism is installed in the spray chamber shell (101) and near the spray inlet and outlet window (104) at the exit The spray inlet and outlet window (104) is used to blow water off the surface of the workpiece (100) after spray cleaning; the collecting water tank (124) is installed on the inner bottom of the spray chamber shell (101) and is used to collect water droplets from spraying and blowing; a recovery water pipe (105) is connected to the collecting water tank (124), and the recovery water pipe (105) extends out of the spray chamber shell (101); the spray control box (106) is installed on the outer wall of the spray chamber shell (101) and is used to drive and control the flip-type spray mechanism and the water blowing mechanism, and the spray control box (106) is wirelessly connected to the control cabinet (801).

7. The automated coating production line for automobile bumpers according to claim 6, characterized in that: The flip-type spray mechanism comprises a shift drive motor (107), a spray main pipe (113), a synchronous moving shaft (119), two arc-shaped rails (115) and two spray shift seats (111); a spray water inlet pipe (102) is installed through the side wall of the spray chamber shell (101), and a first electromagnetic valve (129) is installed on the spray water inlet pipe (102); the two arc-shaped rails (115) are vertically installed in the spray chamber shell (101) through the spray installation column (118), and the two arc-shaped rails (115) are both arranged across the annular rail; the two spray shift seats (111) are respectively movably installed on the two arc-shaped rails (115), and the spray main pipe (113) is longitudinally installed between the two spray shift seats (111); each spray head (121) is installed at intervals on the spray main pipe (113); 13) is connected with a spray connection pipe (120) in the middle, and the spray connection pipe (120) is connected with the spray water inlet pipe (102) through a spray hose (125); arc-shaped racks (114) are arranged on the outer arc edges of the two arc-shaped tracks (115); the front and rear ends of the synchronous moving shaft (119) are rotatably mounted on the two spray shift seats (111), and a shift driving gear (117) is fixedly mounted on the front and rear ends of the synchronous moving shaft (119), and the shift driving gear (117) is meshed with the arc-shaped rack (114) at the corresponding position; the shift driving motor (107) is mounted on a spray shift seat (111), and drives the synchronous moving shaft (119) to rotate through a worm gear transmission mechanism; the shift driving motor (107) and the first electromagnetic valve (129) are driven and controlled by the spray control box (106).

8. The automated coating production line for automobile bumpers according to claim 1, characterized in that: The drying device comprises a drying control box (211), a drying chamber shell (201), a hot air conveying mechanism, an exhaust mechanism, a top air supply mechanism, two side air supply mechanisms and two automatic door mechanisms; a drying inlet and outlet window (217) is provided on the front and rear sides of the drying chamber shell (201); the drying control box (211) is mounted on the outer wall of the drying chamber shell (201); a circular track passes through the front and rear drying inlet and outlet windows (217); the top air supply mechanism is mounted on the inner top of the drying chamber shell (201) and is located above the through section of the circular track; the two side air supply mechanisms are mounted on the left and right inner walls of the drying chamber shell (201) and are located on the left and right sides of the through section of the circular track; the top air supply mechanism is connected to the drying chamber shell (201) through a connecting air duct (2 08) is connected to the two side air supply mechanisms; the hot air conveying mechanism is installed on the outer top of the drying chamber shell (201) and is connected to the top air supply mechanism through the air supply pipe (205); a wind direction adjustment mechanism is provided on the side air supply mechanism for adjusting the air outlet direction; two automatic door mechanisms are respectively installed on the front and rear sides of the drying chamber shell (201) for closing the front and rear drying inlet and outlet windows (217); an exhaust mechanism is installed at the lower part of the drying chamber shell (201) for exhausting the hot and humid air flow in the drying chamber shell (201); the hot air conveying mechanism, the exhaust mechanism and the two automatic door mechanisms are all driven and controlled by the drying control box (211), and the drying control box (211) is wirelessly connected to the control cabinet (801).

9. The automated coating production line for automobile bumpers according to claim 1, characterized in that: The paint spraying device comprises a paint spraying control box (303), a paint spraying room shell (301), a longitudinal moving mechanism, a rotary driving mechanism, a foldable paint spraying bracket, two paint conveying mechanisms, two automatic door mechanisms and various nozzle mechanisms; the paint spraying control box (303) is installed on the outer wall of the paint spraying room shell (301), paint spraying inlet and outlet windows (308) are arranged on the front and rear sides of the paint spraying room shell (301), and the circular track passes through the paint spraying inlet and outlet windows (308) on the front and rear sides; the longitudinal moving mechanism is fixedly installed on the inner top of the paint spraying room shell (301), the foldable paint spraying bracket is rotatably installed on the longitudinal moving mechanism, the rotary driving mechanism is installed at the rotary connection between the foldable paint spraying bracket and the longitudinal moving mechanism, the foldable paint spraying bracket is driven by the longitudinal moving mechanism to move longitudinally, and the rotary driving mechanism is driven by the rotary driving mechanism to drive the foldable paint spraying bracket to move longitudinally. The structure drives the foldable paint spraying bracket to rotate; each nozzle mechanism is distributedly installed on the foldable paint spraying bracket, and each nozzle mechanism sprays paint on the workpiece (100) lifted and transported by the workpiece transporting device, and the foldable paint spraying bracket folds and adjusts the nozzle mechanism; two paint conveying mechanisms are respectively installed on the left and right inner walls of the paint spraying room shell (301) for conveying paint to each nozzle mechanism; two automatic door mechanisms are respectively installed on the front and rear side surfaces of the paint spraying room shell (301) for closing the paint spraying inlet and outlet windows (308) on the front and rear sides; the longitudinal moving mechanism, the rotation driving mechanism, the foldable paint spraying bracket, the two paint conveying mechanisms and the two automatic door mechanisms are all driven and controlled by the paint spraying control box (303), and the paint spraying control box (303) is wirelessly connected to the control cabinet (801).

10. The automated coating production line for automobile bumpers according to claim 9, characterized in that: The foldable spray paint support comprises a suspension mounting plate (307), a swing drive motor (328), a swing drive screw (327), a swing sliding seat (324), a swing drive seat (325), two swing drive rods (309) and two swing support arms (310); a swing mounting notch (341) is arranged on the left and right sides of the suspension mounting plate 307, and the middle parts of the two swing support arms (310) are swing-hinged and respectively mounted on the two swing mounting notches (341); a swing drive slide groove is transversely arranged on the upper side of the suspension mounting plate (307), the swing sliding seat (324) is slidably mounted on the swing drive slide groove, and the swing drive seat (325) is fixed on the swing sliding seat (324); the swing drive screw (327) is rotationally mounted transversely on the suspension mounting plate (307), and the swing drive screw (327) is threadedly screwed and mounted on the suspension mounting plate (307). The swing drive seat (325) is mounted on the suspension mounting plate (307); the swing drive motor (328) is mounted on the suspension mounting plate (307) and is used to rotationally drive the swing drive screw (327); one end of the two swing drive rods (309) are respectively swing-hingedly mounted on the swing connection slots 340 on the upper ends of the two swing support arms (310), and the other ends of the two swing drive rods (309) are each provided with a driving strip hole (323); a swing drive short shaft (326) is respectively provided on the front and rear side surfaces of the swing drive seat (325), and the two swing drive short shafts (326) are respectively extended into the driving strip holes (323) on the two swing drive rods (309) and can slide left and right along the driving strip holes (323); each nozzle mechanism is respectively detachably mounted on the two swing support arms (310); the swing drive motor (328) is driven and controlled by the paint spraying control box (303).

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