A flow transfer device suitable for paint spraying processing

Abstract

The utility model provides a kind of flow transfer device suitable for paint spraying processing, including main body frame, displacement part, movable storage part, calibration fixed part, supply part and control part, displacement part includes lower end displacement mechanism and positioning locking mechanism, movable storage part includes storage box moving mechanism and workpiece posture adjusting mechanism, calibration fixed part includes limiting mechanism and grabbing mechanism, supply part includes transfer mechanism and auxiliary mechanism.The utility model greatly simplifies the loading process of workpiece after paint spraying, thereby reducing labor intensity;Mechanical auxiliary unloads workpiece after paint spraying, significantly reduces labor intensity, simplifies manual unloading step, and greatly shortens unloading time;Workers do not need to contact workpiece after paint spraying for a long time, and the quality of paint spraying is guaranteed, which is conducive to the improvement of processing efficiency in subsequent processes, thereby reducing production cost;Multiple specifications of workpiece after paint spraying can be loaded, which saves a lot of space compared with traditional flow transfer equipment.

Description

Technical Field

[0001] This utility model relates to the field of spray painting, and in particular to a transfer device suitable for spray painting. Background Technology

[0002] Spray painting, a key surface treatment process in modern manufacturing, primarily achieves corrosion protection and aesthetic enhancement of products through coating technology. It comprises three main steps: a pretreatment stage (including degreasing, rust removal, phosphating, and other pretreatment steps), a spraying stage, and a curing stage. In actual production, specialized spray painting equipment is typically required. For example, Chinese Patent CN219483162U discloses an automatic spray painting device, including a material transport mechanism, a spray booth, and a spraying mechanism. The spray booth has entrances and exits at both ends for the material transport mechanism, with closed doors at each entrance. The spraying mechanism is connected to the interior of the spray booth and includes at least one first gantry, an upper nozzle, and a lower nozzle. The first gantry is located inside the spray booth, the upper nozzle is mounted on the first gantry, and the lower nozzle is located below the first gantry with its spraying direction opposite to that of the upper nozzle. The upper and lower nozzles are connected to a paint tank located outside the spray booth via a spray pipe, which is connected to a paint pump.

[0003] Workpieces processed using the aforementioned painting equipment require transfer and transportation before entering subsequent processes. Currently, a combination of mobile carts and crash barriers is commonly used for this purpose, but it has the following drawbacks:

[0004] Firstly, manual handling is physically demanding: the entire loading and unloading process relies entirely on manual operation, resulting in a heavy workload for workers.

[0005] Secondly, the operation process is complicated: in order to ensure the quality of the painted surface, the contact time with the anti-collision bar must be strictly controlled during loading and unloading, which increases the number of operation steps and prolongs the time consumption.

[0006] Third, the efficiency bottleneck is prominent: the cumbersome unloading process seriously drags down the overall production efficiency and indirectly increases manufacturing costs.

[0007] Fourth, poor equipment compatibility: multiple specifications of turnover equipment are required to adapt to different workpieces, resulting in a waste of space resources. Utility Model Content

[0008] This invention proposes a transfer device suitable for spray painting, which can effectively solve the problems mentioned in the background art.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A transfer device suitable for spray painting includes a main frame, a displacement section, a movable storage section, a calibration and fixing section, a supply section, and a control section.

[0011] Specifically, the main frame includes a base, a load-bearing plate, a support plate, and diagonal bracing. The base includes a rectangular hollow container with two circular through holes and one circular pin hole on its top plate, and a rectangular through hole and one circular through hole on its bottom plate. The support plate is mounted on the base and has a U-shaped open slot. The load-bearing plate is mounted on the support plate and has two circular pin holes spaced at equal intervals. Diagonal bracing is installed between the load-bearing plate and the support plate to improve load-bearing capacity.

[0012] Specifically, the displacement section includes a lower displacement mechanism and a positioning and locking mechanism. The lower displacement mechanism includes a servo motor, a roller, a push rod motor, and a stop block; servo motors one and one push rod motor are housed within the base; roller one is pin-connected to the base; servo motors one and roller one are connected via a reduction gearbox; the stop block is located on the movable end of push rod motor one and slidably connected within a circular through hole one. The positioning and locking mechanism includes a push rod motor two, a push rod motor three, an electromagnet one, and an electromagnet two; push rod motor two is housed within the base; electromagnet one is located on the movable end of push rod motor two and slidably connected within a circular through hole two; push rod motor three is located on the base; electromagnet two is located on the movable end of push rod motor three.

[0013] Specifically, the active storage section includes a storage box moving mechanism and a workpiece posture adjustment mechanism. The storage box moving mechanism includes a slide rail, a movable storage box, rollers, and a servo motor. The slide rail and fixed rollers are symmetrically arranged on the base. The movable storage box is slidably connected to the slide rail and includes a rectangular hollow container. Its top plate has two rectangular through holes at equal intervals, the front and rear side plates have U-shaped opening slots, the bottom plate has an iron plate, and the left side plate has a buffer structure. The upper end of the U-shaped opening slot coincides with the side of the rectangular through hole. The buffer structure includes a return spring, a slide rod, and a buffer block. The return spring and slide rod are located on the left side plate of the movable storage box. The buffer block is slidably connected to the slide rod and connected to the return spring. The buffer structure has an iron plate. Rollers are located on the bottom plate of the movable storage box. Servo motors and a roller are located inside the base and are connected for transmission, driving the movable storage box to move on the slide rail. A traction rope is attached to the roller; the other end of the traction rope is attached to the movable storage box.

[0014] The workpiece posture adjustment mechanism includes a U-shaped storage tank, an electro-hydraulic rod, a limiting roller, and an electromagnet. A U-shaped open through-slot is symmetrically arranged on the U-shaped storage tank; the electro-hydraulic rod is symmetrically arranged on the inner wall of the top plate of the rectangular hollow container; the limiting roller is mounted on the electro-hydraulic rod via a U-shaped frame, and its surface is covered with a silicone layer; the electromagnet is coaxially nested inside the limiting roller.

[0015] Specifically, the calibration and fixing components include a limiting mechanism and a gripping mechanism. The limiting mechanism includes an electric telescopic rod and a movable limiting plate; the electric telescopic rod is mounted on the lower surface of the support plate; the movable limiting plate is mounted on the movable end of the electric telescopic rod, and has equidistant strip-shaped through holes. The gripping mechanism includes a servo motor, a gripping plate, a gripper motor, and an electromagnet. Symmetrical frustum-shaped limiting blocks are arranged on the upper and lower surfaces of the gripping plate; the servo motor and the reel are mounted on the support plate; the servo motor and the reel are connected via a reduction gearbox; the gripping plate and the reel are connected via a traction rope; the gripper motor and the electromagnet are mounted on the lower surface of the gripping plate.

[0016] Specifically, the supply section includes a transfer mechanism and auxiliary mechanisms. The transfer mechanism includes limiting rollers, a support platform, a rectangular mounting frame, and a parts storage box; the support platform is mounted on the base via an "L"-shaped support frame; the limiting rollers are symmetrically arranged on the front and rear sides of the support platform; the rectangular mounting frame is located on the front side of the support platform; the parts storage box is detachably connected to the rectangular mounting frame. The auxiliary mechanism includes a second electric telescopic rod and a second gripper motor; the second electric telescopic rod is equidistantly arranged on the lower surface of the support plate; the second gripper motor is located on the movable end of the second electric telescopic rod.

[0017] Specifically, the control section includes a control mechanism, a feedback mechanism, and a PLC controller. The control mechanism includes start switches, pick-up switches, stop switches, transfer switches, loading switches, release switches, pause switches, and unloading switches. The feedback mechanism includes several distance sensor modules.

[0018] Furthermore, a dustproof curtain is added to the side of the support plate.

[0019] Advantages compared to existing technologies:

[0020] In this utility model, the following functions are achieved through the integrated design of the main frame, displacement part, movable storage part, calibration fixing part, supply part and control part:

[0021] Firstly, the active storage section greatly simplifies the loading process of workpieces after painting, thereby reducing labor intensity.

[0022] Secondly, mechanical assistance in unloading painted workpieces significantly reduces labor intensity, simplifies manual unloading steps, and greatly shortens unloading time.

[0023] Thirdly, the simplified unloading process eliminates the need for workers to be in prolonged contact with painted workpieces, ensuring paint quality and improving the efficiency of subsequent processes, thereby reducing production costs.

[0024] Fourth, it can load painted workpieces of various sizes, saving a lot of space compared to traditional transfer equipment.

[0025] Fifth, the dustproof curtain covers the side of the bearing plate to prevent environmental dust from contaminating the uncured paint surface; the surface of the limiting roller is covered with a silicone layer to avoid scratching the workpiece coating. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a top view of the structure of this utility model;

[0028] Figure 3 This is a schematic diagram of a partial cross-sectional structure from a top view of the present invention. Figure 1 ;

[0029] Figure 4 This is a schematic diagram of a partial cross-sectional structure from a top view of the present invention. Figure 2 ;

[0030] Figure 5 This is a front view structural diagram of the present invention;

[0031] Figure 6 This is a partial cross-sectional view of the present invention.

[0032] Figure 7 This is a partially enlarged cross-sectional view of the present invention.

[0033] Figure 8 This is a schematic diagram of the system architecture of this utility model.

[0034] In the diagram: 101. Base, 102. Support plate, 201. Servo motor 1, 202. Push rod motor 1, 203. Push rod motor 2, 204. Push rod motor 3, 301. Movable storage box, 302. Servo motor 2, 303. "U"-shaped storage slot tube, 304. Electro-hydraulic rod, 305. Limiting roller, 401. Electric telescopic rod 1, 402. Movable limiting plate, 403. Servo motor 3, 404. Gripping plate, 405. Gripper motor 1, 501. Support platform, 502. Limiting roller shaft, 503. Rectangular mounting frame, 504. Electric telescopic rod 2, 505. Gripper motor 2. Detailed Implementation

[0035] Example 1, refer to Appendix Figure 1-8 A transfer device suitable for spray painting includes a main frame, a displacement section, a movable storage section, a calibration and fixing section, a supply section, and a control section.

[0036] The main frame includes a base 101, a bearing plate 102, a support plate, and a tie rope.

[0037] The base 101 includes a rectangular hollow container.

[0038] A circular through hole 2 and a circular pin hole 1 are provided on the top plate of the rectangular hollow container 1.

[0039] A rectangular through hole and a circular through hole are provided on the bottom plate of the rectangular hollow container.

[0040] The support plate is mounted on the base 101.

[0041] The support plate is provided with a U-shaped opening through groove.

[0042] The bearing plate 102 is mounted on the support plate.

[0043] Diagonal bracing is installed between the load-bearing plate 102 and the support plate to improve the load-bearing capacity.

[0044] Two circular pin holes are equidistantly arranged on the bearing plate 102.

[0045] The displacement section includes a lower displacement mechanism and a positioning and locking mechanism.

[0046] The lower displacement mechanism includes a servo motor 201, a roller, a push rod motor 202, and a stop block.

[0047] Servo motor 201 is installed inside base 101.

[0048] Roller 1 is pin-connected to base 101. The lower end of roller 1 passes through rectangular through hole 1.

[0049] The servo motor 201 and the roller are connected via a reduction gearbox. They are used to drive this device.

[0050] The push rod motor 202 is installed inside the base 101.

[0051] The stop block is located on the movable end of the push rod motor 202; the stop block is slidably connected inside the circular through hole 1.

[0052] The positioning and locking mechanism includes push rod motor 203, push rod motor 304, electromagnet 1, and electromagnet 2.

[0053] The push rod motor 203 is installed inside the base 101.

[0054] Electromagnet 1 is mounted on the movable end of push rod motor 203.

[0055] Electromagnet one is slidably connected inside circular through hole two.

[0056] The push rod motor 3204 is mounted on the base 101.

[0057] Electromagnet 2 is mounted on the movable end of push rod motor 3 204.

[0058] The active storage section includes a storage box moving mechanism and a workpiece posture adjustment mechanism.

[0059] The storage box moving mechanism includes a slide rail, a movable storage box 301, a roller, and a servo motor 302.

[0060] The slide rail and fixed pulleys are symmetrically arranged on the base 101.

[0061] The active storage box 301 is slidably connected to the slide rail 1.

[0062] The active storage box 301 includes a rectangular hollow container.

[0063] Rectangular through holes are provided at equal intervals on the top plate of the rectangular hollow container II.

[0064] The front and rear side plates of the rectangular hollow container II are provided with U-shaped opening slots at equal intervals; the upper end of the U-shaped opening slots coincides with the side of the rectangular through hole II.

[0065] Iron sheet 2 is installed on the bottom plate of the rectangular hollow container 2.

[0066] A buffer structure is installed on the left side plate of the rectangular hollow container II.

[0067] The buffer structure includes a return spring, a slide bar, and a buffer block.

[0068] A reset spring and a slide bar are mounted on the left side plate of the movable storage box 301.

[0069] The buffer block is slidably connected to the slide rod and is connected to the return spring.

[0070] An iron plate is set on the buffer block of the buffer structure.

[0071] The second roller is mounted on the bottom plate of the movable storage box 301.

[0072] Servo motor 2 302 and roller 1 are installed inside base 101.

[0073] The transmission connection between servo motor 2 (302) and reel 1 is as follows.

[0074] A traction rope is installed on the first reel; the other end of the traction rope is installed on the movable storage box 301.

[0075] The workpiece posture adjustment mechanism includes a "U"-shaped storage tank tube 303, an electric hydraulic rod 304, a limiting roller 305, and an electromagnet.

[0076] The U-shaped storage tube 303 is symmetrically provided with two U-shaped open through slots.

[0077] The electro-hydraulic rods 304 are symmetrically arranged on the inner wall of the top plate of the rectangular hollow container II.

[0078] The limiting roller 305 is mounted on the electro-hydraulic rod 304 via a "U"-shaped frame.

[0079] The three electromagnets are coaxially nested inside the limiting roller 305.

[0080] The calibration and fixing components include a limit mechanism and a gripping mechanism.

[0081] The limiting mechanism includes an electric telescopic rod 401 and a movable limiting plate 402.

[0082] The electric telescopic rod 401 is installed on the bottom surface of the support plate 102.

[0083] The movable limit plate 402 is installed on the movable end of the electric telescopic rod 401.

[0084] The movable limit plate 402 has strip-shaped through holes set at equal intervals.

[0085] The gripping mechanism includes servo motor 3 (403), gripping plate 404, gripper motor 1 (405), and electromagnet 4.

[0086] Symmetrical frustum-shaped limit blocks are arranged on the upper and lower bottom surfaces of the gripping plate 404.

[0087] Servo motor 3 403 and roller 2 are mounted on the support plate 102.

[0088] Servo motor 3403 and reel 2 are connected by a reduction gearbox.

[0089] The gripping plate 404 and the reel 2 are connected by a traction rope.

[0090] The gripper motor 405 and the electromagnet 4 are mounted on the bottom surface of the gripping plate 404.

[0091] The supply component includes transit agencies and auxiliary agencies.

[0092] The transfer mechanism includes a limit roller 502, a support platform 501, a rectangular mounting frame 503, and a parts storage box.

[0093] The support platform 501 is mounted on the base 101 via an "L"-shaped support frame.

[0094] The limiting rollers 502 are symmetrically arranged on the front and rear sides of the support platform 501 to reduce the difficulty of workpiece transfer.

[0095] A rectangular mounting frame 503 is set on the front side of the support platform 501.

[0096] The parts storage box is detachably attached to the rectangular mounting frame 503. It is used to store some tools and parts.

[0097] The auxiliary mechanism includes an electric telescopic rod 2504 and a gripper motor 2505.

[0098] The electric telescopic poles 2504 are equidistantly arranged on the bottom surface of the bearing plate 102.

[0099] The gripper motor 2505 is mounted on the movable end of the electric telescopic rod 2504.

[0100] Both the limiting roller 305 and the limiting roller shaft 502 are coated with a silicone layer to reduce damage to the workpiece. The silicone coating layer is 0.5-1mm thick and forms a flexible fixation layer with strong anti-slip properties.

[0101] The control section includes a control mechanism, a feedback mechanism, and a PLC controller.

[0102] The control mechanism includes a start switch, a pick-up switch, a fixation switch, a transfer switch, a loading switch, a release switch, a pause switch, and an unloading switch.

[0103] The start switch, pick-up switch, fixation switch, loading switch, pause switch, and unloading switch are located on the support platform 501.

[0104] The transfer switch is mounted on the support plate.

[0105] The release switch is located on the gripper plate 404.

[0106] The feedback mechanism includes distance sensor module one and distance sensor module two.

[0107] The distance sensor module is set on the "U"-shaped storage slot tube 303 to assist the PLC controller in detecting the position of the workpiece, i.e., the detection storage position.

[0108] The distance sensor module 2 is mounted on the support plate to assist the PLC controller in detecting the position of the workpiece, i.e., detecting the transfer path.

[0109] Working principle and usage:

[0110] Step 1, Pre-setting:

[0111] Perform power supply debugging on this device. Adjust the PLC control program according to the size and shape of the workpiece to ensure that the "U"-shaped storage tank tube 303 and the electro-hydraulic rod 304 effectively fix the workpiece.

[0112] Step 2, feeding:

[0113] Press the transfer switch, and the PLC controller outputs a signal to servo motor 201, which starts the corresponding servo motor 201, and the device moves to the loading area.

[0114] Press the fixed switch, and the PLC controller outputs a signal to the push rod motor 202. The push rod motor 202 drives the stop block to move down and fix the device.

[0115] Pressing the loading switch activates the PLC controller, which in turn starts the servo motor 302. The operator then drags the movable storage box 301 out of the base 101 for easy storage of the workpiece.

[0116] The workpiece is placed into the "U"-shaped storage tank tube 303. The distance sensor module outputs a signal to the PLC controller, and the PLC controller outputs a signal to the electric hydraulic rod 304, the electromagnet 3, and the servo motor 2 302.

[0117] When the electromagnet is activated, the electric hydraulic rod 304 delays and drives the limiting roller 305 to move, thus initially fixing the workpiece (where the limiting roller 305 restricts the position of the workpiece, and the electromagnet increases the adsorption force, effectively reducing the rolling of the limiting roller 305); the servo motor 302 drives the reel to wind up and unwind the traction rope, pulling the movable storage box 301 horizontally along the slide rail to the preset position, facilitating the subsequent storage of the workpiece.

[0118] When all the "U"-shaped storage tubes 303 are fully loaded, the PLC controller outputs signals to push rod motor 203, electromagnet 1, push rod motor 304, and electromagnet 2.

[0119] The push rod motor 203, electromagnet 1, push rod motor 304, and electromagnet 2 are activated to fix the movable storage box 301 from below and the side.

[0120] Distance sensor module 2 outputs a signal to the PLC controller, and the PLC controller outputs a signal to electric telescopic rod 401, servo motor 403, gripper motor 405, and electromagnet 4.

[0121] The electric telescopic rod 401 and servo motor 403 start, and the movable limit plate 402 moves down in an orderly manner; the gripper motor 405 and electromagnet 4 start after a delay, the gripper motor 405 grips the workpiece, and at the same time the electromagnet 4 attracts the workpiece, that is, fixes the upper end of the workpiece; the electric telescopic rod 401 and servo motor 403 move up a distance in cooperation, and the push rod motor 204 moves a distance in coordination (ensuring that the electromagnet 2 attracts the movable storage box 301), so that the workpiece remains stable and does not swing.

[0122] Third step, retrieve:

[0123] First, move this device to the installation area; press the corresponding access switch, and the PLC controller will output signals to the electric telescopic rod 2 (504) and the gripper motor 2 (505).

[0124] The movable end of the electric telescopic rod 401 moves upward and resets; the servo motor 403 moves the workpiece upward after a delay; the electric telescopic rod 504 and the gripper motor 505 start after a delay, grip the workpiece, and transfer it towards the support platform 501.

[0125] Press the release switch, and the PLC controller will start the servo motor 403.

[0126] The operator transfers the workpiece to support platform 501.

[0127] Then press and hold the gripper release switch. The PLC controller will control the gripper motor 405 to release and the electromagnet 4 to shut off, making it easy to pick up.

[0128] Example 2: Based on Example 1, a dustproof curtain is added to the side of the support plate 102 to improve dustproof capability.

[0129] In Example 3, based on Example 1, limiting roller 305 and electromagnet 3 are replaced by limiting roller 2 and electromagnet 5. Limiting roller 2 includes a cylindrical container and a rotating shaft; electromagnet 5 is set on a "U"-shaped frame and is located inside limiting roller 2, that is, inside the cylindrical container.

Claims

1. A flow-through device suitable for use in a paint spraying process, characterised in that: The system includes a main frame, a displacement section, a movable storage section, a calibration and fixing section, a supply section, and a control section. The main frame includes a base (101), a bearing plate (102), a support plate, and a tie rope. The displacement section includes a lower displacement mechanism and a positioning and locking mechanism. The movable storage section includes a storage box moving mechanism and a workpiece posture adjustment mechanism. The storage box moving mechanism includes a slide rail, a movable storage box (301), a roller, and a servo motor (302). The slide rail and the fixed pulley are mounted on the base (101). The movable storage box (301) is slidably connected to the slide rail. The upper part is provided; the second roller is set on the lower base plate of the movable storage box (301); the second servo motor (302) and the first roller are set in the base (101); the second servo motor (302) and the first roller are connected by transmission; the first roller is provided with a traction rope; the other end of the traction rope is set on the movable storage box (301); the workpiece posture adjustment mechanism includes a "U" shaped storage groove tube (303), an electric hydraulic rod (304), a limiting roller (305) and an electromagnet (3); the calibration and fixing part includes a limiting mechanism and a gripping mechanism; the supply part includes a transfer mechanism and an auxiliary mechanism.

2. The flow-through device for use in a paint spraying process according to claim 1, wherein: The movable storage box (301) includes a rectangular hollow container, a rectangular through hole 2 on its top plate, a "U"-shaped opening through groove 1 on the front and rear side plates, an iron sheet 2 on the bottom plate, and a buffer structure on the left side plate; the upper end of the "U"-shaped opening through groove 1 coincides with the side of the rectangular through hole 2; the buffer structure includes a return spring, a slide rod 1, and a buffer block; the return spring and the slide rod 1 are set on the left side plate of the movable storage box (301); the buffer block is slidably connected to the slide rod 1 and connected to the return spring; an iron sheet 1 is set on the buffer structure.

3. The flow-through device for use in a paint spraying process according to claim 1, wherein: A U-shaped opening through-slot is provided on the U-shaped storage tank tube (303); an electric hydraulic rod (304) is provided on the inner wall of the top plate of the cuboid hollow container II; a limiting roller (305) is provided on the electric hydraulic rod (304) through a U-shaped frame; and three electromagnets are coaxially nested inside the limiting roller (305).

4. The flow-through device for use in a paint spraying process according to claim 1, wherein: The base (101) includes a rectangular hollow container, with a circular through hole 2 and a circular pin hole 1 on its top plate, and a rectangular through hole 1 and a circular through hole 1 on its bottom plate; a support plate is set on the base (101); a "U"-shaped open through groove 3 is set on the support plate; a bearing plate (102) is set on the support plate; a diagonal rope is set between the bearing plate (102) and the support plate; and a circular pin hole 2 is set on the bearing plate (102).

5. The flow-through device for use in a paint spraying process according to claim 1, wherein: The lower displacement mechanism includes a servo motor (201), a roller, a push rod motor (202), and a stop block; the servo motor (201) and the push rod motor (202) are located inside the base (101); the roller is pin-connected to the base (101); the servo motor (201) and the roller are connected by a reduction gearbox; the stop block is located on the movable end of the push rod motor (202); the stop block is slidably connected inside the circular through hole.

6. The flow-through device for use in a paint spraying process according to claim 1, wherein: The positioning and locking mechanism includes push rod motor 2 (203), push rod motor 3 (204), electromagnet 1 and electromagnet 2; push rod motor 2 (203) is located inside the base (101); electromagnet 1 is located on the movable end of push rod motor 2 (203); electromagnet 1 is slidably connected inside the circular through hole 2; push rod motor 3 (204) is located on the base (101); electromagnet 2 is located on the movable end of push rod motor 3 (204).

7. The flow-through device for use in a paint spraying process according to claim 1, wherein: The limiting mechanism includes an electric telescopic rod (401) and a movable limiting plate (402); the electric telescopic rod (401) is disposed on the bottom surface of the bearing plate (102); the movable limiting plate (402) is disposed on the movable end of the electric telescopic rod (401); a strip-shaped through hole is provided on the movable limiting plate (402).

8. The flow-through device for use in a paint spraying process according to claim 1, wherein: The gripping mechanism includes a servo motor three (403), a gripping plate (404), a gripper motor one (405), and an electromagnet four; frustum-shaped limit blocks are provided on the upper and lower surfaces of the gripping plate (404); the servo motor three (403) and the reel two are mounted on the support plate (102); the servo motor three (403) and the reel two are connected by a reduction gearbox; the gripping plate (404) and the reel two are connected by a traction rope; the gripper motor one (405) and the electromagnet four are mounted on the lower surface of the gripping plate (404).

9. The flow-through device for use in a paint spraying process according to claim 1, wherein: The transfer mechanism includes a limiting roller (502), a support platform (501), a rectangular mounting frame (503), and a parts storage box; the support platform (501) is mounted on the base (101) via an "L"-shaped support frame; the limiting roller (502) is mounted on the front and rear sides of the support platform (501); the rectangular mounting frame (503) is mounted on the front side of the support platform (501); and the parts storage box is detachably connected to the rectangular mounting frame (503).

10. The flow-through device for use in a paint spraying process according to claim 1, wherein: The auxiliary mechanism includes an electric telescopic rod 2 (504) and a gripper motor 2 (505); the electric telescopic rod 2 (504) is disposed on the lower bottom surface of the support plate (102); the gripper motor 2 (505) is disposed on the movable end of the electric telescopic rod 2 (504).

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