Mechanism for combining vehicle body tool clamp and surface difference detection system

Abstract

The invention relates to the technical field of automobiles, in particular to a vehicle body tool clamp and surface difference detection system combined mechanism which comprises a bottom plate, a plurality of first electric telescopic rods are fixedly mounted on the bottom plate, a frame plate is jointly and fixedly mounted at the telescopic ends of every two first electric telescopic rods, a side frame is fixedly mounted on each frame plate, and a plurality of second electric telescopic rods are fixedly mounted at the telescopic ends of the first electric telescopic rods. Each side frame is provided with a first driving motor, the output end of each first driving motor penetrates through the corresponding side frame through a bearing to be fixedly provided with a first lead screw, each first lead screw is provided with a threaded frame in a threaded mode, and each threaded frame is fixedly provided with two telescopic air cylinders. The telescopic end of each telescopic cylinder is fixedly provided with an air control vacuum generator, and the bottom frame is provided with a detection mechanism. According to the welding waste collecting device, fallen welding waste is collected through a collecting plate, a third driving motor is controlled to operate, a scraper blade is made to clean the waste collected on the collecting plate, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobiles, in particular to a mechanism combining a vehicle body tooling fixture with a flushness detection system. Background Art

[0002] At present, the white body of light commercial vehicles is large in size. In order to reduce costs, the appearance covering stamping parts need to be divided into parts and then spliced ​​by welding. The appearance covering stamping parts will be misaligned and cause surface difference during the welding and splicing process. For the overlap of large sheet metal parts, the most commonly used method is the "suction cup + support" method as the body tooling fixture, that is, the air-controlled vacuum generator generates a vacuum to make the suction cup absorb the sheet metal and make it fit the support surface, so as to control the overlap surface difference of the two sheet metal parts. Through real-time surface difference detection, it is prompted whether the surface difference is out of tolerance before welding.

[0003] When welding large body panels, a large amount of welding waste is generated, requiring workers to frequently clean the fixtures, thereby increasing their workload. Deliberately setting aside time to clean the waste reduces the welding efficiency of large body panels, and there are no facilities to facilitate the cleaning of welding waste.

[0004] Therefore, the present invention provides a mechanism combining a vehicle body tooling fixture and a flushness detection system that can facilitate cleaning of welding waste. Summary of the invention

[0005] Aiming at the problem of troublesome cleaning of welding waste in the prior art, a mechanism combining a vehicle body tooling fixture with a flushness detection system is designed.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a mechanism combining a vehicle body tooling fixture with a flushness detection system, comprising a bottom plate, a plurality of first electric telescopic rods are fixedly mounted on the bottom plate, a frame plate is fixedly mounted on the telescopic ends of every two of the first electric telescopic rods, a side frame is fixedly mounted on each of the frame plates, a first driving motor is arranged on each of the side frames, a first screw rod is fixedly mounted on the output end of each of the first driving motors through a bearing through the side frame, a threaded frame is threadedly mounted on each of the first screw rods, two telescopic cylinders are fixedly mounted on each of the threaded frames, a gas-controlled vacuum generator is fixedly mounted on the telescopic end of each of the telescopic cylinders, a detection mechanism is arranged on the bottom frame, and also includes a receiving scraping mechanism and two air blowing mechanisms; Two second electric telescopic rods are arranged on each of the racks, and the telescopic ends of the second electric telescopic rods movably penetrate the racks, and a clamping plate is fixedly installed on the telescopic ends of each two of the second electric telescopic rods; The receiving and scraping mechanism comprises a connecting plate fixedly mounted on the plurality of the first electric telescopic rods, the detecting mechanism is provided with a round rod, a third driving motor is fixedly mounted on the end of the round rod, a third screw rod is fixedly mounted on the output end of the third driving motor, an inner block is threadedly mounted on the third screw rod, a scraper is fixedly mounted on the inner block, and the scraper is in contact with the connecting plate; The air blowing mechanism is arranged on the receiving and scraping mechanism, and is used for cleaning the welding waste remaining on the frame plate by air blowing.

[0007] Furthermore, the detection mechanism includes an L-shaped frame fixedly mounted on the base plate, a second drive motor is fixedly mounted on the top of the L-shaped frame, a second screw rod is fixedly mounted on the output end of the second drive motor through the L-shaped frame via a bearing, and a limit rod is fixedly mounted on the L-shaped frame.

[0008] Furthermore, the detection mechanism also includes a threaded block threadedly mounted on the second screw rod, and the threaded block is movably connected to the limit rod, and a top frame is fixedly mounted on the threaded block.

[0009] Furthermore, the detection mechanism also includes a laser detection head fixedly mounted on the end of the top frame, and a display screen is fixedly mounted on the L-shaped frame.

[0010] Furthermore, the air blowing mechanism includes an outer sleeve fixedly mounted on the scraper, an inner sleeve movably mounted on the inner side of the outer sleeve, a movable rod movably mounted on the inner side of the inner sleeve, a support block fixedly mounted on the end of the movable rod, a short rod fixedly mounted on the support block, a guide shell fixedly mounted on each of the frame plates, and the guide shell is movably connected to the short rod.

[0011] Furthermore, the air blowing mechanism also includes a connecting frame fixedly mounted on the supporting block, a buckle block is fixedly mounted on the connecting frame, a supporting sleeve is movably mounted on the buckle block, and an air pipe is fixedly mounted on the supporting sleeve.

[0012] Furthermore, the air blowing mechanism also includes a third electric telescopic rod arranged on the connecting frame, a shaft housing is fixedly installed on the movable end of the third electric telescopic rod, a semicircular block is movably installed on the shaft housing, and the semicircular block is fixedly connected to the air pipe.

[0013] Furthermore, a semicircular shell is fixedly mounted on the connecting plate, two long rods are fixedly mounted on the bottom plate, a limit bolt is threadedly mounted on each of the long rods, a slider is movably mounted on each of the long rods, and a loading shell is fixedly mounted on the two sliders.

[0014] Furthermore, a driving motor is fixedly mounted on the base plate, a fourth screw rod is fixedly mounted on the output end of the driving motor, a moving block is threadedly mounted on the fourth screw rod, a fixed shaft is fixedly mounted on the moving block, an arc block is movably mounted on the fixed shaft, a moving plate is fixedly mounted on the end of the arc block, and the moving plate is located on the inner side of the loading shell.

[0015] Beneficial effects of the present invention: (1) The present invention discloses a mechanism combining a vehicle body fixture with a flushness detection system, which receives the fallen welding waste by means of a receiving plate, and controls the operation of a third drive motor so that a scraper cleans the waste received by the receiving plate, thereby facilitating the cleaning of the welding waste and improving work efficiency.

[0016] (2) The mechanism of combining a vehicle body fixture with a flushness detection system described in the present invention blows out air through an air pipe to blow away welding waste remaining on the frame plate, causing the welding waste to fall onto the connecting plate, thereby further improving the cleaning work of the welding waste.

[0017] (3) The present invention discloses a mechanism combining a vehicle body fixture with a flushness detection system, wherein a scraper scrapes off welding waste on a receiving plate and moves the scraper to the inner side of a loading shell through a semicircular shell, so that the loading shell can load the welding waste in a centralized manner. The moving plate enables the welding waste to be evenly moved to the inner side of the loading shell, so as to prevent the welding waste from accumulating at one place of the loading shell and being easily dropped out of the loading shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of a mechanism combining a vehicle body tooling fixture and a flushness detection system according to the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of a frame plate of a mechanism combining a vehicle body tooling fixture and a flushness detection system according to the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of a laser detection head of a mechanism combining a vehicle body fixture and a flushness detection system according to the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of a connecting plate of a mechanism combining a vehicle body tooling fixture and a flushness detection system according to the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the third screw rod of a mechanism combining a vehicle body fixture and a flushness detection system according to the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of a scraper of a mechanism combining a vehicle body fixture and a flushness detection system according to the present invention; Figure 7It is a schematic diagram of the exploded three-dimensional structure of the outer shell of a mechanism combining a vehicle body tooling fixture and a flushness detection system of the present invention; Figure 8 The present invention is a schematic diagram of the explosion structure of a loading shell of a mechanism combining a vehicle body tooling fixture and a flushness detection system.

[0020] In the figure: 1, bottom plate; 2, first electric telescopic rod; 3, frame plate; 4, second electric telescopic rod; 5, clamping plate; 6, side frame; 7, first drive motor; 8, first screw rod; 9, threaded frame; 10, telescopic cylinder; 11, gas-controlled vacuum generator; 12, L-shaped frame; 13, second drive motor; 14, second screw rod; 15, limit rod; 16, thread block; 17, top frame; 18, laser detection head; 19, display screen; 20, connecting plate; 21, round rod; 22, third drive motor; 23, third screw rod; 24. Inner block; 25. Scraper; 26. Outer sleeve; 27. Inner sleeve; 28. Movable rod; 29. ​​Support block; 30. Short rod; 301. Guide shell; 31. Connecting frame; 32. Buckle block; 33. Support sleeve; 34. Air pipe; 35. Third electric telescopic rod; 36. Shaft shell; 37. Semicircular block; 38. Semicircular shell; 39. Long rod; 40. Limit bolt; 41. Slider; 42. Loading shell; 43. Driving motor; 44. Fourth screw; 45. Moving block; 46. Fixed shaft; 47. Arc block; 48. Moving plate. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] like Figure 1-Figure 8As shown, a mechanism combining a vehicle body tooling fixture and a flushness detection system according to the present invention comprises a base plate 1, on which a plurality of first electric telescopic rods 2 are fixedly mounted, a frame plate 3 is commonly fixedly mounted on the telescopic ends of every two of the first electric telescopic rods 2, each of the frame plates 3 is provided with two second electric telescopic rods 4, and the telescopic ends of the second electric telescopic rods 4 movably penetrate the frame plate 3, a clamping plate 5 is commonly fixedly mounted on the telescopic ends of every two of the second electric telescopic rods 4, each of the frame plates 3 is fixedly mounted with a side frame 6, each of the side frames 6 is provided with a first driving motor 7, an output end of each of the first driving motors 7 is fixedly mounted with a first screw rod 8 through a bearing on the side frame 6, each of the first screw rods 8 is threadedly mounted with a threaded frame 9, and each of the threaded frames 9 is fixedly mounted with two telescopic air Cylinder 10, a pneumatic vacuum generator 11 is fixedly installed on the telescopic end of each telescopic cylinder 10, a detection mechanism is arranged on the base frame, the detection mechanism comprises an L-shaped frame 12 fixedly installed on the base plate 1, a second drive motor 13 is fixedly installed on the top of the L-shaped frame 12, a second screw rod 14 is fixedly installed on the output end of the second drive motor 13 through the L-shaped frame 12 through a bearing, a limit rod 15 is fixedly installed on the L-shaped frame 12, the detection mechanism also comprises a threaded block 16 threadedly installed on the second screw rod 14, and the threaded block 16 is movably connected with the limit rod 15, a top frame 17 is fixedly installed on the threaded block 16, the detection mechanism also comprises a laser detection head 18 fixedly installed on the end of the top frame 17, and a display screen 19 is fixedly installed on the L-shaped frame 12.

[0023] Specifically, the two large sheet materials to be welded are transported to the frame plate 3 through the transport device, the pneumatic vacuum generator 11 is started, and the telescopic end of the telescopic cylinder 10 is controlled to extend so that the telescopic end of the telescopic cylinder 10 can drive the pneumatic vacuum generator 11 to move downward, so that the pneumatic vacuum generator 11 sucks the large sheet material through the suction cup, and then the telescopic end of the telescopic cylinder 10 is controlled to rise to drive the large sheet material to rise, and the first drive motor 7 is controlled to operate so that the output end of the first drive motor 7 rotates to drive the first screw rod 8 to rotate, so that the first screw rod 8 drives the threaded frame 9 to move through the thread action, so that the threaded frame 9 drives the large sheet material to move through the telescopic cylinder 10 and the pneumatic vacuum generator 11, so that the two large sheet materials to be welded are in contact with each other for overlapping work, and the telescopic end of the first electric telescopic rod 2 is controlled to extend so as to drive the frame plate 3 to move upward, so that the frame plate 3 contacts the large sheet material and cooperates with the pneumatic vacuum generator 11 The large sheet metal is supported, and then the telescopic end of the second electric telescopic rod 4 is controlled to extend to drive the clamping plate 5 to move, so that the two clamping plates 5 cooperate with each other to clamp and fix the two large sheet metals, thereby increasing the stability of the construction, and the second drive motor 13 is controlled to operate, so that the output end of the second drive motor 13 rotates to drive the second screw rod 14 to rotate, so that the second screw rod 14 drives the thread block 16 to move by the thread action, and the thread block 16 drives the laser detection head 18 to move through the top frame 17, so that the laser detection head 18 moves along the top of the two large sheet metal construction locations, so that the laser detection head 18 performs face difference detection on the construction locations of the two large sheet metals, and the detection data is transmitted to the display screen 19. If the set standard value is exceeded, an audible and visual alarm is issued, which reduces the possibility of rework and scrapping of the outer cover welding assembly due to face difference, and enables the staff to perform welding work on the two large sheet metals.

[0024] In this embodiment, the receiving and scraping mechanism includes a connecting plate 20 fixedly mounted on the plurality of first electric telescopic rods 2, a round rod 21 is provided on the detection mechanism, a third driving motor 22 is fixedly mounted on the end of the round rod 21, a third screw rod 23 is fixedly mounted on the output end of the third driving motor 22, an inner block 24 is threadedly mounted on the third screw rod 23, a scraper 25 is fixedly mounted on the inner block 24, and the scraper 25 is in contact with the connecting plate 20; The air blowing mechanism is arranged on the receiving scraping mechanism, and is used to clean the welding waste remaining on the frame plate 3 by air blowing. The air blowing mechanism includes an outer sleeve 26 fixedly mounted on the scraper 25, an inner sleeve 27 is movably mounted on the inner side of the outer sleeve 26, and a movable rod 28 is movably mounted on the inner side of the inner sleeve 27. A support block 29 is fixedly mounted on the end of the movable rod 28, and a short rod 30 is fixedly mounted on the support block 29. A guide shell 301 is fixedly mounted on each of the frame plates 3, and the guide shell 301 and the short rod 30 are movably mounted. The air blowing mechanism also includes a connecting frame 31 fixedly mounted on the support block 29, a buckle block 32 fixedly mounted on the connecting frame 31, a support sleeve 33 movably mounted on the buckle block 32, an air pipe 34 fixedly mounted on the support sleeve 33, and the air blowing mechanism also includes a third electric telescopic rod 35 arranged on the connecting frame 31, a shaft shell 36 fixedly mounted on the movable end of the third electric telescopic rod 35, a semicircular block 37 movably mounted on the shaft shell 36, and the semicircular block 37 is fixedly connected to the air pipe 34.

[0025] Specifically, the fallen welding waste is received by the connecting plate 20, and the operation of the third driving motor 22 is controlled so that the output end of the third driving motor 22 rotates to drive the third screw rod 23 to rotate, so that the third screw rod 23 drives the inner block 24 to move by the thread action, so that the inner block 24 can drive the scraper 25 to move, so that the scraper 25 is attached to the surface of the connecting plate 20, and the welding waste on the surface of the connecting plate 20 is cleaned. When the frame plate 3 moves upward, the movable rod 28 is driven to move upward by the guide shell 301, the short rod 30 and the support block 29, so that the movable rod 28 can drive the inner sleeve 27 to move upward under the action of external force, and the air pipe 34 is connected to the air pump through an external pipeline. The gas generated by the air pump is sprayed out from the air pipe 34 through the pipeline to control the extension and retraction of the third electric telescopic rod 35 The end of the third electric telescopic rod 35 is movable, so that the telescopic end of the third electric telescopic rod 35 drives the air pipe 34 to move through the shaft housing 36 and the semicircular block 37. The semicircular block 37 rotates around the shaft housing 36 under the action of external force, and the air pipe 34 drives the support sleeve 33 to rotate around the buckle block 32 under the action of external force. When the scraper 25 moves, the scraper 25 drives the movable air pipe 34 to move along the top of the frame plate 3 through the outer sleeve 26, the inner sleeve 27, the movable rod 28, the support block 29, the connecting frame 31, the buckle block 32 and the support sleeve 33. At the same time, the support block 29 drives the short rod 30 to move along the inner side of the guide shell 301, so that the air pipe 34 sprays gas to blow the welding waste remaining on the frame plate 3, so that the welding waste falls onto the connecting plate 20, thereby facilitating the cleaning of the welding waste and improving work efficiency.

[0026] In this embodiment, a semicircular shell 38 is fixedly installed on the connecting plate 20, two long rods 39 are fixedly installed on the base plate 1, a limit bolt 40 is threadedly installed on each of the long rods 39, a slider 41 is movably installed on each of the long rods 39, a loading shell 42 is fixedly installed on the two sliders 41, a driving motor 43 is fixedly installed on the base plate 1, a fourth screw rod 44 is fixedly installed on the output end of the driving motor 43, a moving block 45 is threadedly installed on the fourth screw rod 44, a fixed shaft 46 is fixedly installed on the moving block 45, an arc block 47 is movably installed on the fixed shaft 46, a moving plate 48 is fixedly installed on the end of the arc block 47, and the moving plate 48 is located on the inner side of the loading shell 42.

[0027] Specifically, the scraper 25 scrapes the welding waste on the receiving plate 20 and moves it to the inner side of the loading shell 42 through the semicircular shell 38, so that the loading shell 42 can centrally load the welding waste, and the driving motor 43 is controlled to operate, so that the output end of the driving motor 43 drives the fourth screw 44 to rotate, so that the fourth screw 44 drives the moving block 45 to move by the thread action, so that the moving block 45 drives the moving plate 48 to move on the inner side of the loading shell 42 through the fixed shaft 46 and the arc block 47, and the moving plate 48 can evenly spread the welding waste accumulated in the loading shell 42, and the driving motor 43 is controlled to repeatedly rotate forward and reverse, so that the welding waste can be evenly moved on the inner side of the loading shell 42 through the moving plate 48, so as to prevent the welding waste from accumulating at one place of the loading shell 42 and easily falling out of the loading shell 42; When it is necessary to process the welding waste loaded in the loading shell 42, the limit bolt 40 is screwed so that the limit bolt 40 moves under the action of the thread of the long rod 39. The staff unscrews the limit bolt 40 from the long rod 39 and moves the loading shell 42 by the handle, so that the loading shell 42 drives the slider 41 to move along the long rod 39 under the action of external force, so that the slider 41 is separated from the long rod 39, and the movable plate 48 is rotated so that the movable plate 48 drives the arc block 47 to rotate around the fixed axis 46 under the action of external force, so that the movable plate 48 moves out of the inner side of the loading shell 42. The staff moves the loading shell 42 to process the welding waste in the loading shell 42, and then fixes the processed loading shell 42 on the long rod 39 through the slider 41, screws on the limit bolt 40, and rotates the movable plate 48 back to the inner side of the loading shell 42.

[0028] Working principle: The staff transports the two large sheet materials to be welded to the frame plate 3 through the transport device, starts the pneumatic vacuum generator 11, controls the telescopic end of the telescopic cylinder 10 to extend, so that the telescopic end of the telescopic cylinder 10 can drive the pneumatic vacuum generator 11 to move downward, so that the pneumatic vacuum generator 11 sucks the large sheet material through the suction cup, and then controls the telescopic end of the telescopic cylinder 10 to rise to drive the large sheet material to rise, and controls the first drive motor 7 to operate, so that the output end of the first drive motor 7 rotates to drive the first screw rod 8 to rotate, so that The first screw rod 8 drives the threaded frame 9 to move through the thread action, so that the threaded frame 9 drives the large sheet to move through the telescopic cylinder 10 and the gas-controlled vacuum generator 11, so that the two large sheet to be welded are in contact with each other for overlapping work, and the telescopic end of the first electric telescopic rod 2 is controlled to extend to drive the frame plate 3 to move upward, so that the frame plate 3 contacts the large sheet to cooperate with the gas-controlled vacuum generator 11 to support the large sheet, and then the telescopic end of the second electric telescopic rod 4 is controlled to extend to drive the clamping plate 5 to move, so that the two clamping plates 5 cooperate with each other to build the two large The sheet metal is clamped and fixed, and the second drive motor 13 is controlled to operate, so that the output end of the second drive motor 13 rotates to drive the second screw rod 14 to rotate, so that the second screw rod 14 drives the thread block 16 to move by the thread action, so that the thread block 16 drives the laser detection head 18 to move through the top frame 17, so that the laser detection head 18 moves along the top of the two large sheet metal parts, so that the laser detection head 18 performs the face difference detection work on the two large sheet metal parts. The detection data is transmitted to the display screen 19. If it exceeds the set The standard value is to give an audible and visual alarm. When there is no problem in the detection, the staff will weld the two large sheet metal parts. After the welding is completed, the fallen welding waste is received by the connecting plate 20. By controlling the operation of the third drive motor 22, the scraper 25 cleans the waste received on the connecting plate 20. The scraper 25 scrapes the welding waste on the connecting plate 20 and moves it to the inner side of the loading shell 42 through the semicircular shell 38, so that the loading shell 42 can load the welding waste in a centralized manner, and the welding waste can be evenly moved on the inner side of the loading shell 42 through the moving plate 48.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A mechanism combining a vehicle body tooling fixture with a flushness detection system, comprising a base plate (1), a plurality of first electric telescopic rods (2) being fixedly mounted on the base plate (1), a frame plate (3) being fixedly mounted on the telescopic ends of every two of the first electric telescopic rods (2), a side frame (6) being fixedly mounted on each of the frame plates (3), a first drive motor (7) being arranged on each of the side frames (6), a first screw rod (8) being fixedly mounted on the output end of each of the first drive motors (7) through a bearing passing through the side frame (6), a threaded frame (9) being threadedly mounted on each of the first screw rods (8), two telescopic cylinders (10) being fixedly mounted on each of the threaded frames (9), a gas-controlled vacuum generator (11) being fixedly mounted on the telescopic end of each of the telescopic cylinders (10), a detection mechanism being arranged on the base frame, characterized in that: It also includes a receiving and scraping mechanism and two air blowing mechanisms; Two second electric telescopic rods (4) are arranged on each of the frame plates (3), and the telescopic ends of the second electric telescopic rods (4) movably penetrate the frame plates (3), and a clamping plate (5) is fixedly mounted on the telescopic ends of each of the two second electric telescopic rods (4); The receiving and scraping mechanism comprises a connecting plate (20) fixedly mounted on the plurality of first electric telescopic rods (2); a round rod (21) is provided on the detection mechanism; a third drive motor (22) is fixedly mounted on the end of the round rod (21); a third screw rod (23) is fixedly mounted on the output end of the third drive motor (22); an inner block (24) is threadedly mounted on the third screw rod (23); a scraper (25) is fixedly mounted on the inner block (24), and the scraper (25) is in contact with the connecting plate (20); The air blowing mechanism is arranged on the receiving and scraping mechanism and is used to clean the welding waste remaining on the frame plate (3) by air blowing.

2. The mechanism combining a vehicle body fixture and a flushness detection system according to claim 1, characterized in that: The detection mechanism comprises an L-shaped frame (12) fixedly mounted on the base plate (1), a second drive motor (13) fixedly mounted on the top end of the L-shaped frame (12), a second screw rod (14) fixedly mounted on the output end of the second drive motor (13) passing through the L-shaped frame (12) via a bearing, and a limit rod (15) fixedly mounted on the L-shaped frame (12).

3. The mechanism combining a vehicle body fixture and a flushness detection system according to claim 2, characterized in that: The detection mechanism further comprises a threaded block (16) threadably mounted on the second screw rod (14), the threaded block (16) being movably connected to the limit rod (15), and a top frame (17) being fixedly mounted on the threaded block (16).

4. The mechanism combining a vehicle body fixture and a flushness detection system according to claim 3 is characterized in that: The detection mechanism also includes a laser detection head (18) fixedly mounted on the end of the top frame (17), and a display screen (19) is fixedly mounted on the L-shaped frame (12).

5. The mechanism combining a vehicle body fixture and a flushness detection system according to claim 1, characterized in that: The air blowing mechanism comprises an outer sleeve (26) fixedly mounted on the scraper (25), an inner sleeve (27) movably mounted on the inner side of the outer sleeve (26), a movable rod (28) movably mounted on the inner side of the inner sleeve (27), a support block (29) fixedly mounted on the end of the movable rod (28), a short rod (30) fixedly mounted on the support block (29), and a guide shell (301) fixedly mounted on each of the frame plates (3), and the guide shell (301) is movably connected to the short rod (30).

6. The mechanism combining a vehicle body fixture and a flushness detection system according to claim 5, characterized in that: The air blowing mechanism further comprises a connecting frame (31) fixedly mounted on the supporting block (29), a buckle block (32) fixedly mounted on the connecting frame (31), a supporting sleeve (33) movably mounted on the buckle block (32), and an air pipe (34) fixedly mounted on the supporting sleeve (33).

7. The mechanism combining a vehicle body fixture and a flushness detection system according to claim 6, characterized in that: The air blowing mechanism further comprises a third electric telescopic rod (35) arranged on the connecting frame (31), a shaft housing (36) being fixedly mounted on the movable end of the third electric telescopic rod (35), a semicircular block (37) being movably mounted on the shaft housing (36), and the semicircular block (37) being fixedly connected to the air pipe (34).

8. The mechanism combining a vehicle body fixture and a flushness detection system according to claim 1, characterized in that: A semicircular shell (38) is fixedly mounted on the connecting plate (20), two long rods (39) are fixedly mounted on the bottom plate (1), a limit bolt (40) is threadedly mounted on each of the long rods (39), a slider (41) is movably mounted on each of the long rods (39), and a loading shell (42) is fixedly mounted on both of the two sliders (41).

9. The mechanism combining a vehicle body fixture and a flushness detection system according to claim 8, characterized in that: A driving motor (43) is fixedly mounted on the bottom plate (1); a fourth screw rod (44) is fixedly mounted on the output end of the driving motor (43); a moving block (45) is threadedly mounted on the fourth screw rod (44); a fixed shaft (46) is fixedly mounted on the moving block (45); an arc block (47) is movably mounted on the fixed shaft (46); a moving plate (48) is fixedly mounted on the end of the arc block (47); and the moving plate (48) is located on the inner side of the loading shell (42).

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