Multi-point lifting type paint spray booth

Abstract

The utility model discloses a multi-point lifting type paint spraying room which comprises a control box, a spraying room body, a movable spraying mechanism, a conveying roller way, a conveying supporting mechanism, a blocking mechanism and a clamping jacking mechanism. According to the multi-point lifting type paint spraying room, multi-point adaptive lifting and supporting are conducted on workpieces through the conveying and supporting mechanism, the supporting stability is improved, flexibility and reliability are achieved, meanwhile, it is ensured that paint mist can evenly cover the workpieces, the completeness of the painted surfaces of the workpieces is improved, and covering points are small and convenient for supplementary spraying; the blocking mechanism can be used for carrying out fixed-point positioning on the conveying supporting mechanism on the conveying roller way, so that the conveying supporting mechanism lifts a workpiece to stay below the movable spraying mechanism, the clamping jacking mechanism clamps and lifts the conveying supporting mechanism to move upwards to be separated from the conveying roller way, and the workpiece enters the paint spraying range of the movable spraying mechanism; and the movable spraying mechanism sprays paint on the workpiece, so that the automation degree of the paint spraying process is improved, and the manual participation degree is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a paint spraying room, especially a multi-point lifting type paint spraying room. BACKGROUND

[0002] Spraying is usually the last step before product delivery, and spraying a coating on the product surface can facilitate both aesthetics and surface corrosion and rust prevention of the finished product, thereby prolonging the service life of the product. Spraying is a coating method in which a spray gun or a disc atomizer is used to disperse uniform and fine mist droplets by means of pressure or centrifugal force, and the mist droplets are applied to the surface of the coated object. Spraying can be divided into air spraying, airless spraying, electrostatic spraying, and various derived forms of the above basic spraying forms, such as high-flow low-pressure atomizing spraying, thermal spraying, automatic spraying, multi-group spraying, etc. However, the existing coating line usually suspends the workpiece for spraying, which requires finding a hanging point that can balance and stabilize the workpiece, and is relatively troublesome. Therefore, a multi-point lifting type paint spraying room is proposed. SUMMARY

[0003] The utility model discloses a multi-point lifting type paint spraying room, which can flexibly support and transport workpieces and has a small covering point.

[0004] Technical scheme: The multi-point lifting type paint spraying room provided by the utility model comprises a control box, a spraying room, a movable spraying mechanism, a transportation roller, a transportation support mechanism, a blocking mechanism and a clamping and jacking mechanism.

[0005] Material running windows are arranged on the left and right side walls of the spraying room; the transportation roller penetrates the spraying room through the two material running windows; the transportation support mechanism is used for multi-point lifting support of the workpiece, and the transportation support mechanism is conveyed by the transportation roller to pass through the spraying room; the movable spraying mechanism, the blocking mechanism and the clamping and jacking mechanism are all installed in the spraying room; the blocking mechanism is used for blocking the transportation support mechanism on the transportation roller; the clamping and jacking mechanism is used for clamping and lifting the transportation support mechanism upward; the movable spraying mechanism is used for spraying the workpiece on the transportation support mechanism; a controller and a wireless communication module electrically connected to the controller are arranged in the control box; the movable spraying mechanism, the transportation roller, the blocking mechanism and the clamping and jacking mechanism are all driven and controlled by the controller.

[0006] Further, a display screen and a key panel electrically connected to the controller are installed on the control box.

[0007] Further, the transportation roller comprises a mounting frame and a conveying drive motor; the mounting frame penetrates the two material running windows transversely; supporting feet are arranged at the four top corners of the mounting frame; a plurality of supporting rollers are rotatably and longitudinally mounted on the mounting frame; the conveying drive motor is electrically connected to the controller through a conveying drive circuit and drives one supporting roller to rotate through a drive chain transmission pair; every two adjacent supporting rollers are drivingly connected through a synchronous chain transmission pair.

[0008] Further, the transport support mechanism comprises a support plate and a plurality of support units; the support unit comprises a support base and a support pin; the support base is vertically fixed on the support plate; the support pin is rotatably installed on the support base, and one end of the support pin is provided as a sharp end.

[0009] Further, the blocking mechanism comprises an electric telescopic rod and a blocking plate; the lower end of the electric telescopic rod is fixed in the spraying house, the upper end is fixed on the lower edge of the blocking plate, and the electric telescopic rod is electrically connected with the controller through the telescopic rod driving circuit; the blocking plate is used to block the transport support mechanism on the transport roller; a position sensor electrically connected with the controller is installed on the upper side of the blocking plate.

[0010] Further, the clamping and jacking mechanism comprises a jacking driving unit and two groups of clamping and jacking units; the jacking driving unit comprises a jacking driving motor, a jacking driving screw and two driving shafts; the two driving shafts are rotatably and parallelly installed in the spraying house; a rotating driving rod is fixed on each of the two driving shafts; a rotating inner threaded pipe and a rotating driving pipe are swingly installed on the two rotating driving rods respectively; the jacking driving motor is fixed on the rotating driving pipe and electrically connected with the controller through a jacking driving circuit; the jacking driving screw is connected with the output shaft of the jacking driving motor, is screwed on the rotating inner threaded pipe and rotatably penetrates the rotating driving pipe; the two groups of clamping and jacking units are installed on the two driving shafts and are used to clamp and lift the transport support mechanism.

[0011] Further, the clamping and jacking unit comprises a clamping guide rod, two clamping driving rods and two jacking supports; the lower ends of the two clamping driving rods are fixed on the two driving shafts respectively, and the upper ends are hingedly connected on the two jacking supports respectively; a guide hole is provided on each of the two jacking supports along the length direction; the two ends of the clamping guide rod are slidingly inserted on the two jacking supports respectively; a limiting screw is slidingly penetrated on each of the two ends of the clamping guide rod; a limiting bolt is screwed on the penetrating end of each of the two limiting screws; a plurality of support wheels are rotatably installed on the upper edge of the jacking support and run on the bottom surface of the transport support mechanism; a clamping seat is provided on each of the two jacking supports for clamping the transport support mechanism.

[0012] Further, the mobile spraying mechanism comprises a spraying pipe, an extension pipe, a horizontal moving unit and a rotating unit; the horizontal moving unit is installed on the inner top surface of the spraying house and is driven and controlled by the controller; the rotating unit is installed on the horizontal moving unit and is driven to move horizontally by the horizontal moving unit; the spraying pipe is installed on the rotating unit and is driven to rotate by the rotating unit; a plurality of nozzles are provided on the spraying pipe; one end of the extension pipe is horizontally connected with the spraying pipe; a connecting hose is penetratingly installed on the spraying house and is connected with the other end of the extension pipe.

[0013] Further, the rotating unit comprises a rotating driving motor and a rotating gear pair; the rotating seat is rotatably installed on the horizontal moving seat; the spraying pipe is installed on the rotating seat; the rotating driving motor drives the rotating seat to rotate through the rotating gear pair, and is electrically connected with the controller through a rotating driving circuit.

[0014] The utility model discloses compared with prior art, its beneficial effect is: utilize the transport support mechanism to carry out the adaptability of multiple point of workpiece and lift support, improve the stability of support, flexible and reliable, can ensure that the paint mist can evenly cover workpiece simultaneously, improve the integrity of workpiece painting surface, and the covering point is smaller and is convenient for supplementary spraying, utilize the blocking mechanism to be able to carry out fixed point positioning to the transport support mechanism on the transport roller way, make the transport support mechanism lift workpiece and stay below the mobile spraying mechanism, and the clamping jacking mechanism clamps and lifts the transport support mechanism and removes the transport roller way, and make workpiece enter the paint spraying range of mobile spraying mechanism, and the workpiece is painted by mobile spraying mechanism, improve the automation degree of paint spraying process, reduce the artificial participation degree. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure schematic diagram of the utility model;

[0016] Figure 2 It is the front view of the utility model;

[0017] Figure 3 It is the section view of the transport roller way of the utility model;

[0018] Figure 4 It is the structure schematic diagram of the clamping jacking mechanism of the utility model;

[0019] Figure 5 It is the top view of the blocking plate of the utility model;

[0020] Figure 6 It is the circuit structure schematic diagram of the utility model;

[0021] In the figure: 1, control box; 2, display screen; 3, key panel; 4, spray booth; 5, support foot; 6, mounting frame; 7, conveying drive motor; 8, carrier roller; 9, material feeding window; 10, transverse movement drive motor; 11, transverse movement guide seat; 12, transverse movement hole; 13, transverse movement drive screw; 14, transverse movement seat; 15, rotary drive motor; 16, rotary seat; 17, blocking plate; 18, flexible cushion layer; 19, position sensor; 20, electric telescopic rod; 21, mounting seat; 22, drive rotating shaft; 23, rotary drive rod; 24, rotary internal thread pipe; 25, jacking drive screw; 26, jacking drive motor; 27, clamping drive rod; 28, jacking support; 29, clamping guide rod; 30, limit bolt; 33, support wheel; 34, support plate; 35, support seat; 36, adjusting shaft; 37, adjusting screw; 38, adjusting bolt; 39, support nail; 40, spraying pipe; 41, nozzle; 42, extension pipe. DETAILED DESCRIPTION

[0022] The technical scheme of the utility model will be described below in detail with reference to the drawings, but the protection scope of the utility model is not limited to the embodiments.

[0023] In the utility model, unless there are explicit provisions and limitations, the terms "mounting", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements or the interaction relationship between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0024] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "left", "right", "front", "back", "up", "down", "top" and "bottom" are all based on the orientation or position relationship shown in the drawings, and are only for the convenience of the simplified description of the utility model, and are not indicative or suggestive of the devices or elements indicated must have a specific orientation, a specific orientation and operation, therefore, it cannot be understood as a limitation on the utility model.

[0025] Example 1:

[0026] As Figures 1-6 shown, the utility model provides a kind of multi-point lifting type paint spray booth, including: control box 1, spray booth 4, mobile spraying mechanism, transport roller, transport support mechanism, blocking mechanism and clamping jacking mechanism;

[0027] The spraying house 4 is provided with a material passing window 9 on each of the left and right side walls; the transport roller bed penetrates the spraying house through the two material passing windows 9; the transport supporting mechanism is used for multi-point lifting support of the workpiece, and the transport supporting mechanism is conveyed by the transport roller bed to pass through the spraying house 4; the mobile spraying mechanism, the blocking mechanism and the clamping and lifting mechanism are all installed in the spraying house 4, the transport supporting mechanism blocked by the blocking mechanism on the transport roller bed is clamped and lifted upward by the clamping and lifting mechanism, and the workpiece on the transport supporting mechanism lifted by the clamping and lifting mechanism is sprayed by the mobile spraying mechanism; the control box 1 is installed on the front side of the spraying house 4; the controller and the wireless communication module electrically connected with the controller are arranged in the control box 1; the mobile spraying mechanism, the transport roller bed, the blocking mechanism and the clamping and lifting mechanism are all driven and controlled by the controller.

[0028] The workpiece is adaptively lifted and supported by the transport supporting mechanism, the stability of the support is improved, the support is flexible and reliable, the paint mist can uniformly cover the workpiece, the integrity of the painted surface of the workpiece is improved, and the covering point is small and convenient for re-spraying; the transport supporting mechanism on the transport roller bed can be positioned by the blocking mechanism, the workpiece lifted by the transport supporting mechanism is stopped below the mobile spraying mechanism, the transport supporting mechanism is clamped and lifted by the clamping and lifting mechanism to move upward and separate from the transport roller bed, and the workpiece enters the paint spraying range of the mobile spraying mechanism, the workpiece is sprayed by the mobile spraying mechanism, the automation degree of the paint spraying process is improved, and the manual participation degree is reduced.

[0029] Further, the display screen 2 and the key panel 3 electrically connected with the controller are installed on the control box 1. The mobile spraying mechanism, the transport roller bed, the blocking mechanism and the clamping and lifting mechanism are controlled by the controller through the key panel 3; the display screen 2 displays information such as the process under the control of the controller.

[0030] Further, the transport roller bed comprises a mounting frame 6, a conveying drive motor 7, a drive chain transmission pair and a plurality of synchronous chain transmission pairs; the mounting frame 6 penetrates the two material passing windows 9 transversely; a supporting leg 5 is arranged at each of the four top corners of the mounting frame 6; a plurality of supporting rollers 8 are rotatably and longitudinally mounted on the mounting frame 6; the conveying drive motor 7 is mounted on one of the supporting legs 5, is electrically connected with the controller through a conveying drive circuit, and drives one of the most edge supporting rollers 8 to rotate through the drive chain transmission pair; each two adjacent supporting rollers 8 are drivingly connected through the synchronous chain transmission pair.

[0031] The conveying drive motor 7 operates under the control of the controller, one of the most edge supporting rollers 8 is driven to rotate through the drive chain transmission pair, and each supporting roller 8 rotates synchronously under the drive of each synchronous chain transmission pair, so that the transport of the transport supporting mechanism is realized.

[0032] Further, the transport support mechanism comprises a support plate 34 and a plurality of support units; each support unit comprises a support base 35, an adjusting shaft 36 and a support pin 39; the lower end of the support base 35 is fixed on the support plate 34; the adjusting shaft 36 is coaxially fixed with a rotating adjusting screw 37 horizontally penetrating the support base 35 at one end, and the support pin 39 is slidingly penetrated through the other end of the adjusting shaft 36; the adjusting screw 37 is screwed with an adjusting bolt 38 for pressing on the support base 35, and when the adjusting bolt 38 is pressed on the support base 35, the support pin 39 is tightly pressed on the vertical side of the support base 35; one end of the support pin 39 is provided as a pointed end.

[0033] By the cooperation between the support base 35, the adjusting shaft 36, the support pin 39, the adjusting screw 37 and the adjusting bolt 38, the height of the pointed end of the support pin 39 can be adjusted, and the rotation angle of the support pin 39 can also be adjusted, so that the support pin 39 can be supported at the recess or edge of the bottom of the workpiece, the stability of the support is improved, and the spray material can cover the lower edge of the workpiece.

[0034] Further, the blocking mechanism comprises an electric telescopic rod 20 and a blocking plate 17; the lower end of the electric telescopic rod 20 is fixed on the inner bottom surface of the spraying room 4, the upper end is fixed on the lower edge of the blocking plate 17, and the electric telescopic rod 20 is electrically connected with the controller through the telescopic rod driving circuit; the blocking plate 17 is located between two adjacent idlers 8; when the blocking plate 17 is located at the uppermost side, the upper edge is used to block the transport support mechanism on the transport roller way; a position sensor 19 for detecting the support plate 34 is installed on the upper side of the blocking plate 17, and the position sensor 19 is electrically connected with the controller; a flexible pad 18 is arranged on the vertical side of the blocking plate 17 which contacts the support plate 34.

[0035] The position sensor 19 helps the controller to judge the position of the transport support mechanism, when the blocking plate 17 blocks the transport support mechanism, the position sensor 19 detects the transport support mechanism, the clamping and jacking mechanism is controlled to lift the transport support mechanism, after the spraying is completed, the clamping and jacking mechanism drives the transport support mechanism to return to the transport roller way, at this time the position sensor 19 detects the transport support mechanism again, the controller controls the electric telescopic rod 20 to drive the blocking plate 17 to move downward so that the transport support mechanism passes through, and after a period of time, the electric telescopic rod 20 drives the blocking plate 17 to reset.

[0036] Further, the clamping and jacking mechanism comprises a jacking driving unit and two sets of clamping and jacking units; the jacking driving unit comprises a jacking driving motor 26, a jacking driving screw 25 and two driving shafts 22; the two driving shafts 22 are both rotatably installed on the bottom surface of the spraying room 4 through the mounting seat 21, and the two driving shafts 22 are parallel to each other; the two driving shafts 22 are both fixed with a rotating driving rod 23 at the end; the rotating driving rod 23 is swingably installed with a rotating internal threaded pipe 24 and a rotating driving pipe at the end; the jacking driving motor 26 is fixed on the rotating driving pipe and electrically connected with the controller through the jacking driving circuit; the jacking driving screw 25 is connected with the output shaft of the jacking driving motor 26 and is screwed on the rotating internal threaded pipe 24 and rotatably penetrates the rotating driving pipe; the two sets of clamping and jacking units are both installed on the two driving shafts 22 and are used for clamping and lifting the transport support mechanism.

[0037] The jacking driving motor 26 drives the jacking driving screw 25 to rotate under the control of the controller, the rotating internal threaded pipe 24 approaches or moves away from the rotating driving pipe, the included angle between the two rotating driving rods 23 increases or decreases, thereby driving the two driving shafts 22 to relatively rotate, the two driving shafts 22 drive the two clamping and jacking units to relatively approach, and the jacking and clamping of the transport support mechanism are realized.

[0038] Further, the clamping and jacking unit comprises a clamping guide rod 29, two clamping driving rods 27 and two jacking supports 28; the lower ends of the two clamping driving rods 27 are respectively fixed on the two driving shafts 22, and the upper ends are respectively hinged on the lower side surfaces of the two jacking supports 28; the two jacking supports 28 are both provided with guide holes along the length direction; the two ends of the clamping guide rod 29 are respectively slidably inserted into the two guide holes; the two ends of the clamping guide rod 29 are both coaxially provided with limiting screws which respectively extend out of the corresponding side guide holes; the extending ends of the two limiting screws are both screwed with limiting bolts 30; a plurality of support wheels 33 which run on the bottom surface of the transport support mechanism are rotatably installed on the edges of the vertical side surfaces of the two jacking supports 28 along the length direction; the two jacking supports 28 are both provided with clamping seats 32 for clamping the transport support mechanism; the two jacking supports 28 are always located in the installation frame 6 in the top view state.

[0039] The cooperation between the clamping guide rod 29 and the two jacking supports 28 makes the two jacking supports 28 always located on the same straight line, the two driving shafts 22 drive the two jacking supports 28 to approach each other through the two clamping driving rods 27, so that the two clamping seats 32 can clamp the transport support mechanism; the cooperation between the limiting screw and the limiting bolt 30 can prevent the clamping guide rod 29 from disengaging and limit the movement range of the two jacking supports 28, so as to prevent the two jacking supports 28 from disengaging from the installation frame 6.

[0040] Further, the mobile spraying mechanism comprises a spraying pipe 40, an extension pipe 42, a horizontal moving unit and a rotating unit; the horizontal moving unit comprises a horizontal moving driving motor 10, a horizontal moving guide seat 11, a horizontal moving driving screw 13 and a horizontal moving seat 14;

[0041] The horizontal moving guide seat 11 is fixed horizontally at the center of the top surface of the spraying room 4; a horizontal moving hole 12 is arranged horizontally on the horizontal moving guide seat 11; a horizontal moving driving block penetrating the horizontal moving hole 12 is slidably installed on the horizontal moving guide seat 11; the horizontal moving driving screw 13 is rotatably horizontally installed in the horizontal moving guide seat 11 and is screwed through the horizontal moving driving block; the horizontal moving driving motor 10 is used to drive the horizontal moving driving screw 13 to rotate and is electrically connected with the controller through a horizontal moving driving circuit; the penetrating end of the horizontal moving driving block is fixed on the horizontal moving seat 14; the rotating unit is installed on the bottom surface of the horizontal moving seat 14 and is driven and controlled by the controller; the spraying pipe 40 is L-shaped; the horizontal pipe of the spraying pipe 40 is installed on the rotating unit and is driven to rotate by the rotating unit; a plurality of nozzles 41 are arranged on the spraying pipe 40; one end of the extension pipe 42 is horizontally butted on the end of the horizontal pipe of the spraying pipe 40; a butting hose 43 with the other end butted on the extension pipe 42 is installed penetratingly on the vertical side wall of one side of the spraying room 4.

[0042] By the cooperation between the horizontal moving unit and the rotating unit and the shape of the spraying pipe 40, the movement of the spraying pipe 40 can be controlled, so that the nozzles 41 can spray the paint mist on the upper surface and each vertical side surface of the workpiece; the extension pipe 42 is used to prevent the butting hose 43 from drooping on the workpiece, so as to ensure the integrity of the paint surface on the workpiece.

[0043] Further, the rotating unit comprises a rotating driving motor 15, a rotating seat 16 and a rotating gear pair; the rotating seat 16 is rotatably installed on the bottom surface of the horizontal moving seat 14; the horizontal pipe of the spraying pipe 40 is horizontally and penetratingly installed on the rotating seat 16; the rotating driving motor 15 is installed on the horizontal moving seat 14 and drives the rotating seat 16 to rotate through the rotating gear pair and is electrically connected with the controller through a rotating driving circuit.

[0044] The rotating driving motor 15 drives the rotating seat 16 to rotate through the rotating gear pair under the control of the controller, so as to realize the rotation adjustment of the spraying pipe 40.

[0045] The multi-point lifting type paint spraying room provided by the utility model has the advantages that the controller adopts an existing single-chip microcomputer control module; the display screen 2 adopts an existing display screen; the conveying driving motor 7, the jacking driving motor 26, the transverse movement driving motor 10 and the lower rotary driving motor 15 all adopt existing stepping motors, and the conveying driving circuit, the jacking driving circuit, the transverse movement driving circuit and the lower rotary driving circuit all adopt corresponding stepping motor driving circuits; the electric telescopic rod 20 adopts an existing electric telescopic rod, and the telescopic rod driving circuit adopts a corresponding electric telescopic rod driving circuit; and the position sensor 19 adopts an existing position sensor.

[0046] As described above, although the utility model has been shown and described with reference to specific preferred embodiments, it must not be interpreted as a limitation on the utility model itself. Various changes can be made to the utility model in form and details without departing from the spirit and scope of the utility model defined by the appended claims.

Claims

1. A multi-point lift paint booth characterized by: The application relates to a spraying device, which comprises a control box (1), a spraying house (4), a mobile spraying mechanism, a conveying roller way, a conveying support mechanism, a blocking mechanism and a clamping jacking mechanism. Two material passing windows (9) are arranged on the left and right side walls of the spraying house (4); the conveying roller way penetrates the spraying house through the two material passing windows (9); the conveying support mechanism is used for multi-point lifting support of workpieces, and the conveying roller way is used for conveying the conveying support mechanism through the spraying house (4); the mobile spraying mechanism, the blocking mechanism and the clamping jacking mechanism are all installed in the spraying house (4); the blocking mechanism is used for blocking the conveying support mechanism on the conveying roller way; the clamping jacking mechanism is used for clamping and lifting the conveying support mechanism upwards. The mobile spraying mechanism is used for spraying workpieces on the conveying support mechanism; a controller and a wireless communication module electrically connected with the controller are arranged in the control box (1); the mobile spraying mechanism, the conveying roller way, the blocking mechanism and the clamping jacking mechanism are all driven and controlled by the controller.

2. The multi-point lift paint booth of claim 1, wherein: A display screen (2) and a key panel (3) electrically connected with the controller are installed on the control box (1).

3. The multi-point lift paint booth of claim 1, wherein: The conveying roller way comprises a mounting frame (6) and a conveying drive motor (7); the mounting frame (6) penetrates the two material passing windows (9) horizontally; supporting legs (5) are arranged at four top corners of the mounting frame (6); a plurality of supporting rollers (8) are rotatably and longitudinally arranged on the mounting frame (6); the conveying drive motor (7) is electrically connected with the controller through a conveying drive circuit and drives one supporting roller (8) to rotate through a drive chain transmission pair; every two adjacent supporting rollers (8) are connected through a synchronous chain transmission pair.

4. The multi-point lift paint booth of claim 1, wherein: The conveying support mechanism comprises a support plate (34) and a plurality of support units; the support unit comprises a support base (35) and a support pin (39); the support base (35) is fixed vertically on the support plate (34); the support pin (39) is rotatably and adjustably arranged on the support base (35), and one end of the support pin (39) is arranged as a pointed end.

5. The multi-point lift paint booth of claim 1, wherein: The blocking mechanism comprises an electric telescopic rod (20) and a blocking plate (17); the lower end of the electric telescopic rod (20) is fixed in the spraying house (4), the upper end is fixed on the lower edge of the blocking plate (17), and the electric telescopic rod (20) is electrically connected with the controller through a telescopic rod drive circuit; the blocking plate (17) is used for blocking the conveying support mechanism on the conveying roller way; a position sensor (19) electrically connected with the controller is arranged on the upper side of the blocking plate (17).

6. The multi-point lift paint booth of claim 1, wherein: The clamping and jacking mechanism comprises a jacking driving unit and two sets of clamping and jacking units; the jacking driving unit comprises a jacking driving motor (26), a jacking driving screw (25) and two driving shafts (22); the two driving shafts (22) are both rotationally and parallelly installed in the spraying room (4); a rotary driving rod (23) is fixed on each of the two driving shafts (22); a rotary internal threaded pipe (24) and a rotary driving pipe are swingly installed on the two rotary driving rods (23) respectively; the jacking driving motor (26) is fixed on the rotary driving pipe and electrically connected with the controller through a jacking driving circuit; the jacking driving screw (25) is connected with the output shaft of the jacking driving motor (26) and is screwingly combined with the rotary internal threaded pipe (24) and rotationally penetrates the rotary driving pipe; the two sets of clamping and jacking units are both installed on the two driving shafts (22) and are used for clamping and lifting the transportation support mechanism.

7. The multi-point lift paint booth of claim 6, wherein: The clamping and jacking unit comprises a clamping guide rod (29), two clamping driving rods (27) and two jacking supports (28); the lower ends of the two clamping driving rods (27) are fixed on the two driving shafts (22) respectively, and the upper ends are hingedly connected with the two jacking supports (28) respectively; a guide hole is arranged on each of the two jacking supports (28) along the length direction; the two ends of the clamping guide rod (29) are slidingly inserted into the two jacking supports (28) respectively; a limiting screw rod is slidingly penetrated through the clamping guide rod (29) on each of the two ends of the clamping guide rod (29); a limiting screw bolt (30) is screwingly combined with the penetrating end of each of the two limiting screw rods; a plurality of support wheels (33) are rotationally installed on the upper edge of the jacking support (28) and run on the bottom surface of the transportation support mechanism; a clamping seat (32) for clamping the transportation support mechanism is arranged on each of the two jacking supports (28).

8. The multi-point lift paint booth of claim 1, wherein: The mobile spraying mechanism comprises a spraying pipe (40), an extension pipe (42), a horizontal moving unit and a rotating unit; the horizontal moving unit is installed on the inner top surface of the spraying room (4) and is driven and controlled by the controller; the rotating unit is installed on the horizontal moving unit and is driven to move horizontally by the horizontal moving unit; the spraying pipe (40) is installed on the rotating unit and is driven to rotate by the rotating unit; a plurality of nozzles (41) are arranged on the spraying pipe (40); one end of the extension pipe (42) is horizontally connected with the spraying pipe (40); a connecting hose (43) is penetratively installed on the spraying room (4) and is connected with the other end of the extension pipe (42).

9. The multi-point lift paint booth of claim 8, wherein: The rotating unit comprises a rotating driving motor (15) and a rotating gear pair; a rotating seat (16) is rotationally installed on the horizontal moving seat (14); the spraying pipe (40) is installed on the rotating seat (16); the rotating driving motor (15) drives the rotating seat (16) to rotate through the rotating gear pair and is electrically connected with the controller through a rotating driving circuit.

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