An aluminum alloy vehicle door stamping forming profile deviation detection device

Abstract

This invention relates to the field of aluminum alloy car door processing technology, and discloses a device for detecting the profile offset of aluminum alloy car door stamping. The device includes a light-shielding box, inside which a worktable for placing the aluminum alloy car door is fixedly installed. A robotic arm is fixedly installed on the inner wall of the light-shielding box. This invention incorporates a dust collection mechanism. When dust is present in the light-shielding box, a motor is activated, driving a rotating rod and a first bevel gear to rotate. The first bevel gear then drives a second bevel gear and an impeller to rotate around a bearing. The impeller's rotation generates suction, creating a negative pressure in the air collection box. The dust in the light-shielding box then enters the dust collection hood and suction pipe, finally adsorbing onto the surface of the dust collector bag. Under gravity, the dust falls into the dust box, completing the dust collection. Without dust interference, the 3D scanner can accurately scan the car door data, thereby improving the accuracy of the detection.

Description

Technical Field

[0001] This invention relates to the field of aluminum alloy car door processing technology, specifically to a device for detecting the profile offset of aluminum alloy car door stamping. Background Technology

[0002] Aluminum alloy car doors are made from aluminum alloy as the raw material. They are generally formed by stamping during processing, which can replace traditional steel to achieve a weight reduction effect of more than 40%. After stamping, in order to prevent the outline from deviating, it is usually inspected by a testing device to ensure the accuracy of processing.

[0003] During testing, the aluminum alloy car door is usually placed inside the testing device, and then a 3D scanner emits a laser to quickly obtain measurement data. However, considering that loading and unloading aluminum alloy car doors requires personnel to enter the testing device, it is easy for personnel to bring dust into the testing device. The laser emitted by the 3D scanner will cause signal scattering when passing through dust, affecting the accuracy of the measurement.

[0004] To address this issue, we propose a device for detecting the profile offset of aluminum alloy car doors during stamping. Summary of the Invention

[0005] The purpose of this invention is to provide a device for detecting the profile offset of aluminum alloy car door stamping, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a device for detecting the profile offset of an aluminum alloy car door stamping, comprising a light-shielding box, a worktable for placing the aluminum alloy car door is fixedly installed inside the light-shielding box, a robotic arm is fixedly installed on the inner wall of the light-shielding box, a three-dimensional scanner is fixedly installed at the output end of the robotic arm, a dust collection hood is fixedly connected to the top of the light-shielding box, a dust collection box is fixedly installed on one side of the light-shielding box, a suction pipe is fixedly connected to one side of the dust collection box, one end of the suction pipe is fixedly connected to one side of the dust collection hood, a partition is fixedly connected inside the dust collection box, three dust collection bags are fixedly installed at the bottom of the partition, and an exhaust pipe is fixedly connected to the top of the dust collection box;

[0007] A vacuuming mechanism, which is fixedly mounted on the exhaust pipe;

[0008] A vibration mechanism, which is fixedly mounted on the dust collection box;

[0009] A lifting mechanism is fixedly mounted on a light-shielding box.

[0010] Preferably, the dust collection mechanism includes a mounting bracket installed on one side of the exhaust pipe. A motor is fixedly installed on one side of the mounting bracket. The output end of the motor extends through the interior of the mounting bracket and is fixedly connected to a rotating rod. One end of the rotating rod extends through the interior of the exhaust pipe and is fixedly connected to a first bevel gear. A second bevel gear is meshed with one side of the first bevel gear, and an impeller is fixedly connected to the bottom of the second bevel gear.

[0011] Preferably, the vibration mechanism includes a compression box fixedly connected to one side of the dust collection box, and one side of the compression box is fixedly connected to an air jet pipe through a one-way pressure valve. One end of the air jet pipe extends into the interior of the dust collection box and is fixedly connected to a nozzle.

[0012] A gas collection box is fixedly connected to one side of the exhaust pipe. A transmission pipe is fixedly connected to one side of the gas collection box via a first one-way valve. One end of the transmission pipe is fixedly connected to one side of the compression box. Both sides of the gas collection box are fixedly connected to air inlet pipes via second one-way valves. A piston plate is installed inside the gas collection box. A push rod is fixedly connected to the top of the piston plate. The push rod extends through to the top of the gas collection box and is fixedly connected to a push block. A cam that cooperates with the push block is fixedly connected to the surface of the rotating rod. A spring is fixedly connected to the bottom of the push block. The bottom of the spring is fixedly connected to the top of the gas collection box.

[0013] Preferably, the lifting mechanism includes two support frames symmetrically arranged inside the light-shielding box. A fan is fixedly installed on the inner wall of the support frame. A U-shaped block is fixedly connected to one side of the support frame. A positioning block is rotatably connected to the inner wall of the U-shaped block through a rotating shaft. One side of the positioning block is fixedly connected to the inner wall of the light-shielding box. A hydraulic rod for driving the support frame is hinged to the inner wall of the light-shielding box.

[0014] Preferably, the number of jet pipes is three, and they are positioned opposite to the dust collector bag.

[0015] Preferably, a dust box is provided at the bottom of the dust collection box, and the dust box is detachably connected to the dust collection box by screws.

[0016] Preferably, the first check valve is a valve that can only allow air to enter the compression box, and the second check valve is a valve that can only allow air to enter the air collection box.

[0017] Preferably, a crossbar is fixedly connected to the inner wall of the exhaust pipe, and a bearing is provided at the bottom of the crossbar, which is rotatably connected to the top of the second bevel gear through the bearing.

[0018] Preferably, a dustproof net is fixedly installed on the top of the exhaust pipe, and the dustproof net is detachably connected to the exhaust pipe by screws.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. This invention incorporates a dust collection mechanism. When dust is present in the sunshade box, the motor is activated, driving the rotating rod and the first bevel gear to rotate. The first bevel gear then drives the second bevel gear and the impeller to rotate around the bearing. The impeller's rotation generates suction, creating negative pressure in the air collection box. The dust in the sunshade box then enters the dust collection pipe through the dust collection hood and finally adheres to the surface of the dust collection bag. Under gravity, the dust falls into the dust box, completing the dust collection. Without dust interference, the 3D scanner can accurately scan the data of the car door, thereby improving the accuracy of the detection.

[0021] 2. This invention incorporates a vibration mechanism. When the rotating rod rotates, it drives the cam to rotate as well. When the cam's protruding end contacts the pushing block, the pushing block moves downward due to compression. When the cam rotates to a point where it no longer contacts the pushing block, the spring force pushes the pushing block upward. The pushing block then drives the pushing rod and piston plate upward. At this point, the air collection box is under negative pressure, and gas enters the air collection box through the inlet pipe. When the pushing block moves downward, it drives the pushing rod and piston plate downward, causing the gas in the air collection box to enter the compression box through the transmission pipe. This cycle repeats intermittently, injecting gas into the compression box. When the compressed gas pressure exceeds the limit of the one-way pressure valve, the gas is ejected from the nozzle through the jet pipe. The compressed gas impacts the dust collector bag, causing vibration and shaking off the dust adsorbed on its surface, thereby improving the dust removal effect.

[0022] 3. By setting up a lifting mechanism, the present invention can generate wind by starting a fan and blowing it towards the bottom of the light-shielding box. At the same time, the hydraulic rod can be activated to push the support frame and the fan to swing around the pivot. The wind generated by the fan will lift the dust inside the light-shielding box so that the dust collection mechanism can effectively suck the dust into the dust collection box. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure in this invention;

[0024] Figure 2 This is a perspective view taken in cross-section in this invention;

[0025] Figure 3 In this invention Figure 2 Enlarged view of the area at point A in the middle;

[0026] Figure 4 This is a perspective view of the lifting mechanism in this invention;

[0027] Figure 5 This is a perspective view of a partial structure in this invention;

[0028] Figure 6 This is a perspective view of the vibration mechanism in this invention;

[0029] Figure 7 This is a perspective view of the dust collection mechanism in this invention;

[0030] Figure 8 This is a perspective view of the gas collection box in this invention.

[0031] In the diagram: 1. Light-shielding box; 2. Workbench; 3. Robotic arm; 4. 3D scanner; 5. Dust collection hood; 6. Dust collection box; 7. Suction pipe; 8. Partition; 9. Dust collector bag; 10. Exhaust pipe; 11. Mounting frame; 12. Motor; 13. Rotating rod; 14. First bevel gear; 15. Second bevel gear; 16. Impeller; 17. Compression box; 18. Jet pipe; 19. Nozzle; 20. Air collection box; 21. Transmission pipe; 22. Inlet pipe; 23. Piston plate; 24. Push rod; 25. Push block; 26. Cam; 27. Spring; 28. Support frame; 29. ​​Fan; 30. U-shaped block; 31. Positioning block; 32. Hydraulic rod; 33. Dust box; 34. Crossbar; 35. Bearing; 36. Dustproof net. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figure 1 - Figure 8 As shown,

[0034] Example 1:

[0035] A device for detecting the profile offset of an aluminum alloy car door stamping process includes a light-shielding box 1, a workbench 2 for placing the aluminum alloy car door is fixedly installed inside the light-shielding box 1, a robotic arm 3 is fixedly installed on the inner wall of the light-shielding box 1, a 3D scanner 4 is fixedly installed at the output end of the robotic arm 3, a dust collection hood 5 is fixedly connected to the top of the light-shielding box 1, a dust collection box 6 is fixedly installed on one side of the light-shielding box 1, a suction pipe 7 is fixedly connected to one side of the dust collection box 6, one end of the suction pipe 7 is fixedly connected to one side of the dust collection hood 5, a partition 8 is fixedly connected inside the dust collection box 6, three dust collection bags 9 are fixedly installed at the bottom of the partition 8, and an exhaust pipe 10 is fixedly connected to the top of the dust collection box 6.

[0036] A vacuuming mechanism is fixedly installed on the exhaust pipe 10;

[0037] Vibration mechanism, which is fixedly mounted on dust collection box 6;

[0038] The lifting mechanism is fixedly installed on the light-shielding box 1.

[0039] The dust collection mechanism includes a mounting bracket 11 installed on one side of the exhaust pipe 10. A motor 12 is fixedly installed on one side of the mounting bracket 11. The output end of the motor 12 extends into the interior of the mounting bracket 11 and is fixedly connected to a rotating rod 13. One end of the rotating rod 13 extends into the interior of the exhaust pipe 10 and is fixedly connected to a first bevel gear 14. A second bevel gear 15 is meshed with one side of the first bevel gear 14. An impeller 16 is fixedly connected to the bottom of the second bevel gear 15.

[0040] In this embodiment, a dust collection mechanism is provided. When dust is present in the light shield box 1, the motor 12 can be started. The motor 12 will drive the rotating rod 13 and the first bevel gear 14 to rotate. Then, the first bevel gear 14 will drive the second bevel gear 15 and the impeller 16 to rotate around the bearing 35. When the impeller 16 rotates, it will generate suction, making the air collection box 20 negative pressure. Then, the dust in the light shield box 1 will enter the dust collection pipe 7 through the dust collection hood 5, and finally enter the dust collection box 6 to be adsorbed on the surface of the dust collection bag 9. Under the action of gravity, it will fall into the dust box 33, completing the dust collection. Without the interference of dust, the 3D scanner 4 can accurately scan the data of the car door, thereby improving the accuracy of the detection.

[0041] A crossbar 34 is fixedly connected to the inner wall of the exhaust pipe 10. A bearing 35 is provided at the bottom of the crossbar 34, and the bearing 35 is rotatably connected to the top of the second bevel gear 15.

[0042] In this embodiment, by setting the crossbar 34 and bearing 35, the second bevel gear 15 and impeller 16 can be supported, while improving the smoothness and stability of their rotation process.

[0043] A dustproof net 36 is fixedly installed on the top of the exhaust pipe 10. The dustproof net 36 is detachably connected to the exhaust pipe 10 by screws.

[0044] In this embodiment, by setting a dustproof net 36, dust can be prevented from entering the dust collection box 6 from the exhaust pipe 10, thus playing a dustproof role.

[0045] Example 2:

[0046] Based on Embodiment 1, in this embodiment, the dust collection mechanism can collect dust by sucking it into the dust collection box 6 and then adsorbing it onto the dust collection bag 9. However, considering that if a large amount of dust is adsorbed onto the dust collection bag 9, it will affect the suction force generated by the dust collection mechanism and thus reduce the dust removal effect, the vibration mechanism in this application includes a compression box 17 fixedly connected to one side of the dust collection box 6. One side of the compression box 17 is fixedly connected to an air jet pipe 18 through a one-way pressure valve. One end of the air jet pipe 18 penetrates into the interior of the dust collection box 6 and is fixedly connected to a nozzle 19.

[0047] A gas collection box 20 is fixedly connected to one side of the exhaust pipe 10. A transmission pipe 21 is fixedly connected to one side of the gas collection box 20 through a first one-way valve. One end of the transmission pipe 21 is fixedly connected to one side of the compression box 17. Both sides of the gas collection box 20 are fixedly connected to air inlet pipes 22 through second one-way valves. A piston plate 23 is provided inside the gas collection box 20. A push rod 24 is fixedly connected to the top of the piston plate 23. The push rod 24 extends through to the top of the gas collection box 20 and is fixedly connected to a push block 25. A cam 26 that works with the push block 25 is fixedly connected to the surface of the rotating rod 13. A spring 27 is fixedly connected to the bottom of the push block 25. The bottom of the spring 27 is fixedly connected to the top of the gas collection box 20.

[0048] In this embodiment, a vibration mechanism is set up. When the rotating rod 13 rotates, it will drive the cam 26 to rotate. When the protruding end of the cam 26 contacts the pushing block 25, the pushing block 25 will move downward due to the squeezing effect. When the cam 26 rotates to the point where it no longer contacts the pushing block 25, the elastic force generated by the spring 27 will push the pushing block 25 to move upward. The pushing block 25 will then drive the pushing rod 24 and the piston plate 23 to move upward. At this time, the air collection box 20 is under negative pressure, and the gas will enter the air collection box 20 through the air inlet pipe 22. When the pushing block 25 moves downward, it will drive the pushing rod 24 and the piston plate 23 to move downward, so that the gas in the air collection box 20 enters the compression box 17 through the transmission pipe 21. This cycle is repeated, and gas is intermittently injected into the compression box 17. When the compressed gas pressure is greater than the limit of the one-way pressure valve, the gas will be sprayed out through the jet pipe 18 and the nozzle 19. The compressed gas will vibrate when it hits the dust collector bag 9, shaking off the dust adsorbed on its surface, thereby improving the dust removal effect.

[0049] There are three jet pipes 18, and they are positioned opposite the dust collector bag 9.

[0050] In this embodiment, three jet pipes 18 are set up, and the positions of the jet pipes 18 are opposite to the positions of the dust collector bag 9. When the compressed gas is sprayed out from the nozzle 19, it will accurately hit the dust collector bag 9 and shake off the dust.

[0051] The bottom of the dust collection box 6 is equipped with a ash box 33, which is detachably connected to the dust collection box 6 by screws.

[0052] In this embodiment, by setting up a dust box 33, the dust will fall into the dust box 33 after being shaken off, and thus be collected. At the same time, the dust box 33 is detachably connected by screws, and when cleaning is required, only the screws need to be removed.

[0053] The first check valve allows air to enter only the compression chamber 17, and the second check valve allows air to enter only the air collection chamber 20.

[0054] In this embodiment, by setting a first one-way valve and a second one-way valve, when the gas in the gas collection box 20 is compressed, the gas can only enter the compression box 17 through the transmission pipe 21. When the gas collection box 20 is under negative pressure, the outside gas can only enter the gas collection box 20 through the air inlet pipe 22.

[0055] Example 3:

[0056] Based on Embodiment 1, in this embodiment, the dust collection mechanism can draw dust into the dust collection box 6 by generating suction. However, considering that some dust is at the bottom of the light shield box 1, it is difficult to effectively draw it out by suction. In this application, the lifting mechanism includes two support frames 28 symmetrically arranged inside the light shield box 1. A fan 29 is fixedly installed on the inner wall of the support frame 28. A U-shaped block 30 is fixedly connected to one side of the support frame 28. A positioning block 31 is rotatably connected to the inner wall of the U-shaped block 30 through a rotating shaft. One side of the positioning block 31 is fixedly connected to the inner wall of the light shield box 1. A hydraulic rod 32 for driving the support frame 28 is hinged to the inner wall of the light shield box 1.

[0057] In this embodiment, by setting up a lifting mechanism, the fan 29 can be activated to generate wind force, which blows towards the bottom of the light-shielding box 1. At the same time, the hydraulic rod 32 can be activated to push the support frame 28 and the fan 29 to swing around the position of the pivot. The wind force generated by the fan 29 will lift the dust in the light-shielding box 1, so that the dust collection mechanism can effectively suck the dust into the dust collection box 6.

[0058] The working principle and usage process of this invention: When there is dust in the sunshade box 1, the motor 12 can be started. The motor 12 will drive the rotating rod 13 and the first bevel gear 14 to rotate. Then the first bevel gear 14 will drive the second bevel gear 15 and the impeller 16 to rotate around the bearing 35. When the impeller 16 rotates, it will generate suction, making the air collection box 20 negative pressure. Then the dust in the sunshade box 1 will enter the suction pipe 7 through the dust collection hood 5, and finally enter the dust collection box 6 and be adsorbed on the surface of the dust collection bag 9. Under the action of gravity, it will fall into the dust box 33, completing the collection of dust. Without the interference of dust, the 3D scanner 4 can accurately scan the data of the car door, thereby improving the accuracy of detection.

[0059] As the rotating rod 13 rotates, it drives the cam 26 to rotate. When the protruding end of the cam 26 contacts the push block 25, the push block 25 will move downward due to the squeezing effect. When the cam 26 rotates to the point where it no longer contacts the push block 25, the elastic force generated by the spring 27 will push the push block 25 upward. The push block 25 will then drive the push rod 24 and the piston plate 23 upward. At this time, the air collection box 20 is under negative pressure, and the gas will enter the air collection box 20 through the air inlet pipe 22. When the push block 25 moves downward, it will drive the push rod 24 and the piston plate 23 downward, so that the gas in the air collection box 20 enters the compression box 17 through the transmission pipe 21. This cycle continues, and gas is intermittently injected into the compression box 17. When the compressed gas pressure is greater than the limit of the one-way pressure valve, the gas will be ejected from the nozzle 19 through the jet pipe 18. The compressed gas will vibrate when it hits the dust collector bag 9, shaking off the dust adsorbed on its surface, thereby improving the dust removal effect.

[0060] The fan 29 can be activated to generate airflow towards the bottom of the light-shielding box 1. At the same time, the hydraulic rod 32 can be activated to push the support frame 28 and the fan 29 to swing around the pivot. The airflow generated by the fan 29 will lift the dust inside the light-shielding box 1 so that the dust collection mechanism can effectively suck the dust into the dust collection box 6.

[0061] The structure used in this application can be additionally fitted with protective measures that are common knowledge in the field of this technology under different usage environments, including but not limited to the following methods, such as protective covers for equipment protection, dustproof nets 36 for equipment dust prevention, and sealing components or waterproof coatings for equipment waterproofing, which are commonly used by those skilled in the art.

[0062] It should be noted that (workbench 2, robotic arm 3, 3D scanner 4, motor 12, fan 29 and hydraulic rod 32) are existing devices or equipment, or devices or equipment that can be implemented by existing technology. The power supply, connection method, usage method, power source, fixing method, installation method, control method, etc. of the equipment, as well as the materials of each accessory and the selection of various parameters are common knowledge to those skilled in the art, and therefore will not be described in detail in this application document.

[0063] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure performing the function described herein, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0064] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0065] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0066] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

[0067] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0068] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the profile offset of an aluminum alloy car door during stamping, characterized in that: The device includes a light shield box (1), a workbench (2) for placing aluminum alloy car doors is fixedly installed inside the light shield box (1), a robotic arm (3) is fixedly installed on the inner wall of the light shield box (1), a three-dimensional scanner (4) is fixedly installed at the output end of the robotic arm (3), a dust collection hood (5) is fixedly connected to the top of the light shield box (1), a dust collection box (6) is fixedly installed on one side of the light shield box (1), a suction pipe (7) is fixedly connected to one side of the dust collection box (6), one end of the suction pipe (7) is fixedly connected to one side of the dust collection hood (5), a partition (8) is fixedly connected inside the dust collection box (6), three dust removal bags (9) are fixedly installed at the bottom of the partition (8), and an exhaust pipe (10) is fixedly connected to the top of the dust collection box (6). A vacuuming mechanism is fixedly mounted on the exhaust pipe (10); A vibration mechanism is fixedly mounted on the dust collection box (6); The lifting mechanism is fixedly mounted on the light-shielding box (1).

2. The aluminum alloy car door stamping profile offset detection device according to claim 1, characterized in that: The dust collection mechanism includes a mounting bracket (11) installed on one side of the exhaust pipe (10). A motor (12) is fixedly installed on one side of the mounting bracket (11). The output end of the motor (12) extends into the interior of the mounting bracket (11) and is fixedly connected to a rotating rod (13). One end of the rotating rod (13) extends into the interior of the exhaust pipe (10) and is fixedly connected to a first bevel gear (14). A second bevel gear (15) is meshed on one side of the first bevel gear (14). An impeller (16) is fixedly connected to the bottom of the second bevel gear (15).

3. The aluminum alloy car door stamping profile offset detection device according to claim 2, characterized in that: The vibration mechanism includes a compression box (17) fixedly connected to one side of the dust collection box (6). One side of the compression box (17) is fixedly connected to an air jet pipe (18) through a one-way pressure valve. One end of the air jet pipe (18) extends into the interior of the dust collection box (6) and is fixedly connected to a nozzle (19). One side of the exhaust pipe (10) is fixedly connected to an air collection box (20). One side of the air collection box (20) is fixedly connected to a transmission pipe (21) through a first one-way valve. One end of the transmission pipe (21) is fixedly connected to one side of the compression box (17). Both sides of the air collection box (20) are fixedly connected to an air inlet pipe (22) through a second one-way valve. The inside of the air collection box (20) is provided with a piston plate (23). The top of the piston plate (23) is fixedly connected to a push rod (24). The push rod (24) extends through to the top of the air collection box (20) and is fixedly connected to a push block (25). The surface of the rotating rod (13) is fixedly connected to a cam (26) that works with the push block (25). The bottom of the push block (25) is fixedly connected to a spring (27). The bottom of the spring (27) is fixedly connected to the top of the air collection box (20).

4. The aluminum alloy car door stamping profile offset detection device according to claim 3, characterized in that: The lifting mechanism includes two support frames (28) symmetrically arranged inside the light-shielding box (1). A fan (29) is fixedly installed on the inner wall of the support frame (28). A U-shaped block (30) is fixedly connected to one side of the support frame (28). A positioning block (31) is rotatably connected to the inner wall of the U-shaped block (30) through a rotating shaft. One side of the positioning block (31) is fixedly connected to the inner wall of the light-shielding box (1). A hydraulic rod (32) for driving the support frame (28) is hinged to the inner wall of the light-shielding box (1).

5. The aluminum alloy car door stamping profile offset detection device according to claim 3, characterized in that: The number of jet pipes (18) is three, and they are positioned opposite the dust collection bag (9).

6. The aluminum alloy car door stamping profile offset detection device according to claim 3, characterized in that: The bottom of the dust collection box (6) is provided with a ash box (33), which is detachably connected to the dust collection box (6) by screws.

7. The aluminum alloy car door stamping profile offset detection device according to claim 3, characterized in that: The first check valve is a valve that can only allow air to enter the compression box (17), and the second check valve is a valve that can only allow air to enter the air collection box (20).

8. The aluminum alloy car door stamping profile offset detection device according to claim 2, characterized in that: A crossbar (34) is fixedly connected to the inner wall of the exhaust pipe (10). A bearing (35) is provided at the bottom of the crossbar (34), and the bearing (35) is rotatably connected to the top of the second bevel gear (15).

9. The aluminum alloy car door stamping profile offset detection device according to claim 2, characterized in that: A dustproof net (36) is fixedly installed on the top of the exhaust pipe (10), and the dustproof net (36) is detachably connected to the exhaust pipe (10) by screws.

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