An automatic sampling device for automotive parts

Abstract

The application discloses an automatic sampling device for automobile parts, and relates to the technical field of material sampling, which comprises a bottom plate, four supports which are symmetrically arranged in pairs on the bottom plate, a sampling mechanism arranged on the bottom plate and used for sampling automobile parts on a conveying mechanism, an industrial robot fixedly connected to one side of the bottom plate close to a detection table, an operating rod fixedly connected to an operating end of the industrial robot, a fixed plate fixedly connected to one end of the operating rod close to the bottom plate, two symmetrically arranged sliding plates slidingly connected to the fixed frame, and a plurality of suction cups arranged on the side, away from the fixed plate, of each of the two sliding plates. The sampling mechanism is arranged, and in the process that the suction cups abut against the surface of the automobile parts, the sampling process precision and stability of the automobile parts are improved, and the stability of the conveying belt in conveying the automobile parts is ensured.

Description

Technical Field

[0001] This invention relates to the field of material sampling technology, specifically to an automatic sampling device for automotive parts. Background Technology

[0002] In the production process of automotive parts, it is often necessary to collect samples of finished products from the production line to analyze whether the product quality meets the standards. Sampling and testing help companies to identify problems in the production process in a timely manner, such as unstable production processes or equipment failures. Based on this, companies can take corresponding measures to adjust and improve. At the same time, by regularly sampling and testing automotive parts, companies can promptly identify and resolve potential problems, preventing small problems from escalating into major malfunctions. This not only extends the service life of automobiles but also significantly saves on maintenance costs, thereby allowing companies to adjust the production line and ultimately improve product quality.

[0003] When gripping and inspecting automotive parts, for parts with smooth, flat surfaces and a certain degree of rigidity, such as body panels (e.g., doors, hoods), glass components (e.g., windshields, windows), and some interior trim parts, suction cups are typically used for adsorption and fixation. While suction cups reduce the risk of surface damage to automotive parts, they require a certain amount of pressure to ensure complete contact. During this contact, the downward pressure generated by the suction cup can exceed the maximum static friction between the part and the conveyor belt, causing the part to slip. This affects the accuracy and stability of gripping the automotive parts during sampling. Furthermore, the conveyor belt (made of rubber) can become dented during the contact process, and its elasticity recovers after the pressure is released, potentially causing other parts on the conveyor belt to "bounce," thus affecting the stability of transporting other automotive parts. Therefore, we propose an automatic sampling device for automotive parts. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic sampling device for automotive parts to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic sampling device for automotive parts, comprising a base plate and four supports arranged symmetrically in pairs on the base plate, wherein a detection platform is provided on the side of the base plate near the four supports, and further comprising a conveying mechanism disposed on the four supports for conveying automotive parts and a sampling mechanism disposed on the base plate for sampling automotive parts on the conveying mechanism.

[0006] The sampling mechanism includes an industrial robot fixedly connected to the base plate near the testing platform. An operating rod is fixedly connected to the operating end of the industrial robot. A fixed plate is fixedly connected to the end of the operating rod near the base plate. A fixed frame is fixedly connected to the end of the fixed plate away from the operating rod. Two symmetrically arranged sliding plates are slidably connected to the fixed frame. Multiple suction cups are respectively provided on the side of each sliding plate away from the fixed plate. The fixed frame is provided with a driving component for driving each suction cup. Each of the two sliding plates is provided with an adjusting component for self-adjusting the suction position of each suction cup. The fixed frame is provided with a moving component for moving the distance between the two sliding plates.

[0007] Preferably, the drive assembly includes multiple L-shaped plates fixedly connected to the side of the fixed frame near the suction cup. Each L-shaped plate is fixedly connected to an air supply pipe at the end away from the fixed frame. Multiple corrugated pipes are fixedly connected to the side of the air supply pipe near the suction cup. A connecting pipe is fixedly connected to the end of each corrugated pipe away from the air supply pipe. A control valve is provided on the side wall of each connecting pipe. The air supply pipe is connected to an external vacuum pump through a connecting hose.

[0008] Preferably, the adjustment assembly includes two symmetrically arranged first strip plates fixedly connected to the side of the sliding plate near the suction cup, a second strip plate connected between the two first strip plates via a rotating shaft, an adjustment tube fixedly connected to the end of the second strip plate away from the sliding plate, the end of the connecting tube away from the corrugated pipe connected to the adjustment tube, and one of the two first strip plates is provided with a locking assembly for locking the position of the adjustment tube after adjustment.

[0009] Preferably, the locking assembly includes an arc-shaped plate fixedly connected to the side of the first strip plate near the corrugated pipe, a locking tube fixedly connected to the arc-shaped plate, a locking rod slidably connected to the end of the locking tube near the rotating shaft, a wedge-shaped groove being provided on the side of the locking rod near the adjusting pipe, an installation tube being fixedly connected to the end of the locking tube away from the locking rod, and the end of the installation tube away from the locking tube being connected to a connecting pipe, and the locking tube being provided with a pressing assembly for pressing the locking rod.

[0010] Preferably, the extrusion assembly includes an extrusion plate slidably connected to the locking tube, the end of the locking rod away from the rotation axis is connected to the extrusion plate, a spring is fixedly connected to the side of the extrusion plate away from the locking rod, the end of the spring away from the extrusion plate is connected to the bottom wall of the locking tube, and the locking tube is provided with a limiting assembly for limiting the movement of the extrusion plate.

[0011] Preferably, the limiting component includes two mutually symmetrically arranged limiting grooves formed in the inner wall of the locking tube, the two limiting grooves are slidably connected to limiting plates, and the opposite ends of the two limiting plates are connected to the extrusion plate.

[0012] Preferably, the moving component includes moving slots formed on two opposing inner walls of the fixed frame, two moving plates slidably connected to the two moving slots respectively, two opposing moving plates connected to the sliding plates, a double-ended threaded rod rotatably connected between the two opposing inner walls of the fixed frame, two sliding plates threadedly connected to the double-ended threaded rod respectively, a motor fixedly connected to one side of the fixed frame, and the output end of the motor connected to the double-ended threaded rod.

[0013] Preferably, the conveying mechanism includes a support plate fixedly connected between two opposing supports, a plurality of drive wheels connected between the two opposing support plates by rotating rollers, a conveyor belt connecting the two opposing drive wheels, a plurality of support plates for supporting the conveyor belt fixedly connected between the two support plates, and a push assembly for pushing the automotive parts conveyed by the conveyor belt.

[0014] Preferably, the pushing assembly includes a long strip plate fixedly connected between four supports in pairs. Two of the long strip plates are located on the side of the conveyor belt near the bottom plate and are fixedly connected to a rectangular plate. The side of the rectangular plate near the conveyor belt is connected to a pushing plate through four guide sleeves arranged symmetrically in pairs. The side of the pushing plate away from the rectangular plate is fixedly connected to a plurality of pushing rods. Each of the pushing rods is slidably connected between the conveyor belt and the support plate.

[0015] Preferably, each of the push rods is fixedly connected to a push block at the end away from the rectangular plate, and the side of each push block closest to the automotive part is frosted. The rectangular plate is provided with a push rod motor for pushing each push block on the side away from the automotive part.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The automatic sampling device for automotive parts of the present invention, through the setting of the sampling mechanism, under the combined action of the adjusting component and the pushing component, provides rigid support for the suction cup to abut against the surface of the automotive part during the process of abutting, reducing the sliding friction of the automotive part during the abutment process. At the same time, it also avoids the risk of other automotive parts "bouncing" due to the elastic force generated by the compression and deformation of the conveyor belt. Thus, it improves the grasping accuracy and stability during the sampling of automotive parts, while ensuring the stability of the conveyor belt in transporting the automotive parts.

[0018] The automatic sampling device for automotive parts of the present invention, by adjusting the configuration of the components, allows the suction cup to rotate adaptively under the pushing of the industrial robot and the pressing force against the surface of the automotive part, thereby making the center line of the suction cup perpendicular to the inclined surface of the automotive part, thus ensuring sufficient contact between the suction cup and the surface of the automotive part. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the conveying mechanism of the present invention;

[0021] Figure 3 This is a schematic diagram of the actuator structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the drive component structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the mobile component of the present invention;

[0024] Figure 6 This is a schematic diagram of the locking component structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the extrusion assembly and the limiting assembly of the present invention;

[0026] Figure 8 For Figure 6 Enlarged view of point A in the middle.

[0027] In the diagram: 101, base plate; 102, bracket; 103, testing table; 201, industrial robot; 202, operating lever; 203, fixing plate; 204, fixing frame; 205, sliding plate; 206, suction cup; 301, air supply pipe; 302, corrugated pipe; 303, L-shaped plate; 304, connecting pipe; 305, control valve; 401, first strip plate; 402, rotating shaft; 403, second strip plate; 404, adjusting pipe; 501, arc plate; 502, locking pipe; 503, locking lever; 504 505. Wedge groove; 601. Mounting tube; 602. Extrusion plate; 703. Spring; 704. Limiting groove; 705. Limiting plate; 906. Moving groove; 907. Moving plate; 908. Double-ended threaded rod; 909. Motor; 1000. Support plate; 1001. Transmission wheel; 1002. Conveyor belt; 1003. Support plate; 1004. Long strip plate; 1105. Rectangular plate; 1106. Guide sleeve; 1107. Push plate; 1108. Push rod; 1109. Push block; 11000. Push rod motor. Detailed Implementation

[0028] 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.

[0029] Example 1

[0030] Please see Figures 1-8 The figure shows an automatic sampling device for automobile parts, including a base plate 101 and four supports 102 arranged symmetrically in pairs on the base plate 101. A detection platform 103 is provided on the side of the base plate 101 near the four supports 102. The device also includes a conveying mechanism arranged on the four supports 102 for conveying automobile parts and a sampling mechanism arranged on the base plate 101 for sampling automobile parts on the conveying mechanism.

[0031] The sampling mechanism includes an industrial robot 201 fixedly connected to the base plate 101 near the detection table 103. An operating rod 202 is fixedly connected to the operating end of the industrial robot 201. A fixed plate 203 is fixedly connected to the end of the operating rod 202 near the base plate 101. A fixed frame 204 is fixedly connected to the end of the fixed plate 203 away from the operating rod 202. Two symmetrically arranged sliding plates 205 are slidably connected to the fixed frame 204. Multiple suction cups 206 are respectively provided on the side of the two sliding plates 205 away from the fixed plate 203. The fixed frame 204 is provided with a driving component for driving each suction cup 206. The two sliding plates 205 are respectively provided with an adjustment component for self-adjusting the adsorption position of each suction cup 206. The fixed frame 204 is provided with a moving component for moving the distance between the two sliding plates 205.

[0032] It should be noted that, through the configuration of the sampling mechanism, with the combined action of the adjusting and pushing components, during the process of the suction cup 206 contacting the surface of the automotive part, it can provide rigid support for the contact between the suction cup 206 and the automotive part, reducing the sliding friction of the automotive part during the contact process. At the same time, it can also avoid the risk of other automotive parts "bounce" due to the elastic force generated by the compression and deformation of the conveyor belt 1003. Thus, while improving the grasping accuracy and stability during the sampling of automotive parts, it also ensures the stability of the conveyor belt 1003 in transporting the automotive parts.

[0033] Please see Figure 4 , Figure 5 , Figure 6 and Figure 8 The drive assembly shown in the figure includes multiple L-shaped plates 303 fixedly connected to the side of the fixed frame 204 near the suction cup 206. Each L-shaped plate 303 is fixedly connected to an air supply pipe 301 at the end away from the fixed frame 204. Multiple corrugated pipes 302 are fixedly connected to the side of the air supply pipe 301 near the suction cup 206. Each corrugated pipe 302 is fixedly connected to a connecting pipe 304 at the end away from the air supply pipe 301. Each connecting pipe 304 has a control valve 305 on its side wall. The air supply pipe 301 is connected to an external vacuum pump through a connecting hose.

[0034] It should be noted here that the drive component is configured to bring each suction cup 206 into a vacuum state, thereby achieving the adsorption and fixation of automotive parts.

[0035] Please see Figure 5 and Figure 6 The adjustment assembly shown in the figure includes two symmetrically arranged first strip plates 401 fixedly connected to the side of the sliding plate 205 near the suction cup 206. A second strip plate 403 is connected between the two first strip plates 401 through a rotating shaft 402. An adjustment tube 404 is fixedly connected to the end of the second strip plate 403 away from the sliding plate 205. The end of the connecting tube 304 away from the bellows 302 is connected to the adjustment tube 404. One of the two first strip plates 401 is provided with a locking assembly for locking the position of the adjustment tube 404 after adjustment.

[0036] It should be noted that by adjusting the component settings, the suction cup 206 will rotate adaptively under the push of the industrial robot 201 and the pressure force against the surface of the automotive part, thereby making the center line of the suction cup 206 perpendicular to the inclined surface of the automotive part, thus ensuring sufficient contact between the suction cup 206 and the surface of the automotive part.

[0037] Please see Figure 6 , Figure 7 and Figure 8 The locking assembly shown in the figure includes an arc-shaped plate 501 fixedly connected to the side of the first strip plate 401 near the bellows 302. The arc-shaped plate 501 is fixedly connected to a locking tube 502. A locking rod 503 is slidably connected to one end of the locking tube 502 near the rotating shaft 402. A wedge-shaped groove 504 is provided on the side of the locking rod 503 near the adjusting tube 404. An installation tube 505 is fixedly connected to one end of the locking tube 502 away from the locking rod 503. The end of the installation tube 505 away from the locking tube 502 is connected to the connecting tube 304. The locking tube 502 is provided with a pressing assembly for pressing the locking rod 503.

[0038] It should be noted that the locking component is used to lock and fix the rotating shaft 402, and then the adjusting tube 404 locks and fixes the suction cup 206 after the rotation adjustment is completed. This avoids stress concentration at the connection point caused by the rotating connection between the suction cup 206 and the sliding plate 205, and thus ensures stability during the upward lifting of the car parts.

[0039] Please see Figure 6 , Figure 7 and Figure 8The extrusion assembly shown in the figure includes an extrusion plate 601 slidably connected to a locking tube 502, a locking rod 503 connected at one end away from the rotation shaft 402 to the extrusion plate 601, a spring 602 fixedly connected to the side of the extrusion plate 601 away from the locking rod 503, and the end of the spring 602 away from the extrusion plate 601 connected to the bottom wall of the locking tube 502. The locking tube 502 is provided with a limiting assembly for limiting the movement of the extrusion plate 601.

[0040] It should be noted here that the compression assembly is designed to provide elastic restoring force to the locking lever 503.

[0041] Please see Figure 6 , Figure 7 and Figure 8 The limiting component shown in the figure includes two symmetrically arranged limiting grooves 701 formed on the inner wall of the locking tube 502. The two limiting grooves 701 are slidably connected to limiting plates 702, and the opposite ends of the two limiting plates 702 are connected to the extrusion plate 601.

[0042] It should be noted here that the limiting component is used to guide and limit the movement of the extrusion plate 601.

[0043] Please see Figure 5 and Figure 8 The movable component shown in the figure includes movable slots 901 formed on two opposing inner walls of the fixed frame 204. Two movable plates 902 are slidably connected to the two movable slots 901 respectively. The two opposing movable plates 902 are connected to the sliding plates 205. A double-ended threaded rod 903 is rotatably connected between the two opposing inner walls of the fixed frame 204. The two sliding plates 205 are threadedly connected to the double-ended threaded rod 903 respectively. A motor 904 is fixedly connected to one side of the fixed frame 204. The output end of the motor 904 is connected to the double-ended threaded rod 903.

[0044] It should be noted here that the movable component is used to adjust the spacing between the suction cups 206 located on both sides, thereby facilitating the gripping of automotive parts of different lengths.

[0045] Please see Figure 1 and Figure 2 The conveying mechanism shown in the figure includes a support plate 1001 fixedly connected between two opposing supports 102. The two support plates 1001 are connected to each other by a rotating roller and a plurality of transmission wheels 1002 are connected to each other by a conveyor belt 1003. A plurality of support plates 1004 for supporting the conveyor belt 1003 are fixedly connected between the two support plates 1001. The supports 102 are provided with a pushing assembly for pushing the automotive parts conveyed by the conveyor belt 1003.

[0046] It should be noted here that the conveyor mechanism is used to transport automotive parts, thereby facilitating the transfer between different processes.

[0047] Please see Figure 1 and Figure 2 The push assembly shown in the figure includes a long strip plate 1101 fixedly connected between two pairs of four supports 102. The two long strip plates 1101 are located on the side of the conveyor belt 1003 near the bottom plate 101 and are fixedly connected to a rectangular plate 1102. The side of the rectangular plate 1102 near the conveyor belt 1003 is connected to a push plate 1104 through four guide sleeves 1103 arranged symmetrically in pairs. The side of the push plate 1104 away from the rectangular plate 1102 is fixedly connected to a plurality of push rods 1105. Each push rod 1105 is slidably connected between each conveyor belt 1003 and the support plate 1004.

[0048] It should be noted here that the push component is designed to separate the automotive parts from the conveyor belt 1003, thereby reducing the risk of sliding friction between the automotive parts during the contact process.

[0049] Please see Figure 1 and Figure 2 In the figure, each push rod 1105 is fixedly connected to a push block 1106 at the end away from the rectangular plate 1102. The side of each push block 1106 close to the car part is frosted. The rectangular plate 1102 is provided with a push rod motor 1107 on the side away from the car part for pushing each push block 1106.

[0050] It should be noted here that the push rod motor 1107 is used to push each push rod 1105.

[0051] In this solution: an automatic sampling device for automotive parts includes the following steps:

[0052] During the sampling and testing of automotive parts, when the finished automotive parts are transported by the various conveyor belts 1003 on the bracket 102, when the automotive parts are transported to one side of each push rod 1105, the push rod motor 1107 is started, pushing the push block 1106 at one end of each push rod 1105 to abut against the surface of the automotive parts, and then separating the automotive parts from the surface of the conveyor belt 1003 during the continuous pushing process.

[0053] After the car parts separate from the surface of the conveyor belt 1003, the industrial robot 201 pushes the fixed frame 204 at one end of the operating lever 202 closer to the car parts (when sampling the car parts, the industrial robot 201 can pre-drive the fixed frame 204 to be opposite the pushing lever 1105, just enough to keep the car parts at a safe distance, so as to achieve rapid sampling of the car parts). As the fixed frame 204 moves closer to the car parts, it will simultaneously drive the suction cup 206 at one end of the adjusting tube 404 to move. When the suction cup 206 comes into contact with the surface of the car parts, if there is an inclined surface at the contact point, the suction cup 206 will adaptively rotate under the pushing of the industrial robot 201 and the pressing force against the surface of the car parts, so that the center line of the suction cup 206 is perpendicular to the inclined surface of the car parts, thereby ensuring sufficient contact between the suction cup 206 and the surface of the car parts.

[0054] Furthermore, during the process of the suction cup 206 contacting the surface of the car part, the car part is pushed away from the conveyor belt 1003 by each push block 1106. Therefore, during the contact process of the suction cup 206 contacting the surface of the car part, it can provide rigid support for the contact between the suction cup 206 and the car part, reducing the sliding friction of the car part during the contact process. At the same time, it can also avoid the risk of other car parts "bounce" due to the elastic force generated by the compression and deformation of the conveyor belt 1003. Thus, while improving the grasping accuracy and stability during the sampling process of the car part, it also ensures the stability of the conveyor belt 1003 in conveying the car part.

[0055] After the suction cup 206 is fully in contact with the surface of the automotive part, the vacuum pump can be activated to remove air from the suction cup 206 through the connecting hose, air supply pipe 301, and bellows 302, thus creating a vacuum state for the suction cup 206. Under the influence of the air pressure difference, the suction cup 206 adsorbs and fixes the automotive part. Simultaneously, while the suction cup 206 is vacuum adsorbing and fixing the automotive part, the gas in the locking pipe 502 is simultaneously extracted through the mounting pipe 505. At this time, under the guiding action of the vacuum adsorption and limiting components, the locking... The extrusion plate 601 inside the tube 502 moves closer to the mounting tube 505, which in turn drives the locking rod 503 to move. This causes the wedge-shaped groove 504 on the surface of the locking rod 503 to abut against the surface of the rotating shaft 402. Under the wedge-shaped abutment, the rotating shaft 402 is locked and fixed. Then, the suction cup 206, which has been rotated and adjusted, is locked and fixed through the adjusting tube 404. This avoids stress concentration at the connection point caused by the rotating connection between the suction cup 206 and the sliding plate 205, thus ensuring stability during the upward lifting of the automotive parts.

[0056] 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 process, method, article, or apparatus.

[0057] 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. An automatic sampling device for automotive parts, comprising: The base plate (101) and four supports (102) arranged symmetrically in pairs on the base plate (101) are provided with a testing platform (103) on the side of the base plate (101) near the four supports (102). Its characteristic is that it further includes: A conveying mechanism for conveying automotive parts, mounted on four supports (102); A sampling mechanism is installed on the base plate (101) for sampling automotive parts on the conveying mechanism; The sampling mechanism includes an industrial robot (201) fixedly connected to the side of the base plate (101) near the testing table (103). The operating end of the industrial robot (201) is fixedly connected to an operating rod (202). The end of the operating rod (202) near the base plate (101) is fixedly connected to a fixed plate (203). The end of the fixed plate (203) away from the operating rod (202) is fixedly connected to a fixed frame (204). The fixed frame (204) is slidably connected to two mutually symmetrically arranged sliding plates (205). The side of the two sliding plates (205) away from the fixed plate (203) is respectively provided with multiple suction cups (206). The fixed frame (204) is provided with a driving component for driving each suction cup (206). The two sliding plates (205) are respectively provided with an adjustment component for self-adjusting the adsorption position of each suction cup (206). The fixed frame (204) is provided with a moving component for moving the distance between the two sliding plates (205). The drive assembly includes multiple L-shaped plates (303) fixedly connected to the side of the fixed frame (204) near the suction cup (206). Each L-shaped plate (303) is fixedly connected to an air supply pipe (301) at the end away from the fixed frame (204). Multiple corrugated pipes (302) are fixedly connected to the side of the air supply pipe (301) near the suction cup (206). Each corrugated pipe (302) is fixedly connected to a connecting pipe (304) at the end away from the air supply pipe (301). Each connecting pipe (304) has a control valve (305) on its side wall. The air supply pipe (301) is connected to an external vacuum pump through a connecting hose. The adjustment assembly includes two symmetrically arranged first strip plates (401) fixedly connected to the sliding plate (205) near the suction cup (206). A second strip plate (403) is connected between the two first strip plates (401) via a rotating shaft (402). An adjustment tube (404) is fixedly connected to one end of the second strip plate (403) away from the sliding plate (205). The end of the connecting tube (304) away from the bellows (302) is connected to the adjustment tube (404). One of the two first strip plates (401) is provided with a locking assembly for locking the position of the adjustment tube (404) after adjustment. The locking assembly includes an arc-shaped plate (501) fixedly connected to the side of the first strip plate (401) near the bellows (302). The arc-shaped plate (501) is fixedly connected to a locking tube (502). A locking rod (503) is slidably connected to one end of the locking tube (502) near the rotating shaft (402). A wedge-shaped groove (504) is provided on the side of the locking rod (503) near the adjusting tube (404). An installation tube (505) is fixedly connected to one end of the locking tube (502) away from the locking rod (503). The end of the installation tube (505) away from the locking tube (502) is connected to the connecting tube (304). The locking tube (502) is provided with a pressing assembly for pressing the locking rod (503).

2. The automatic sampling device for automotive parts according to claim 1, characterized in that: The extrusion assembly includes an extrusion plate (601) slidably connected to a locking tube (502). One end of the locking rod (503) away from the rotating shaft (402) is connected to the extrusion plate (601). A spring (602) is fixedly connected to the side of the extrusion plate (601) away from the locking rod (503). One end of the spring (602) away from the extrusion plate (601) is connected to the bottom wall of the locking tube (502). The locking tube (502) is provided with a limiting assembly for limiting the movement of the extrusion plate (601).

3. An automatic sampling device for automotive parts according to claim 2, characterized in that: The limiting component includes two mutually symmetrically arranged limiting grooves (701) opened on the inner wall of the locking tube (502), the two limiting grooves (701) are slidably connected to limiting plates (702), and the opposite ends of the two limiting plates (702) are connected to the extrusion plate (601).

4. An automatic sampling device for automotive parts according to claim 3, characterized in that: The moving component includes moving slots (901) formed on two opposing inner walls of the fixed frame (204). Two moving plates (902) are slidably connected to the two moving slots (901). The two opposing moving plates (902) are connected to sliding plates (205). A double-threaded rod (903) is rotatably connected between the two opposing inner walls of the fixed frame (204). The two sliding plates (205) are threadedly connected to the double-threaded rod (903). A motor (904) is fixedly connected to one side of the fixed frame (204). The output end of the motor (904) is connected to the double-threaded rod (903).

5. An automatic sampling device for automotive parts according to claim 1, characterized in that: The conveying mechanism includes a support plate (1001) fixedly connected between two opposing supports (102). The two support plates (1001) are connected to each other by a rotating roller and a plurality of transmission wheels (1002). The two opposing transmission wheels (1002) are connected to each other by a conveyor belt (1003). A plurality of support plates (1004) for supporting the conveyor belt (1003) are fixedly connected between the two support plates (1001). The supports (102) are provided with a pushing assembly for pushing the automotive parts conveyed by the conveyor belt (1003).

6. An automatic sampling device for automotive parts according to claim 5, characterized in that: The pushing assembly includes a long strip plate (1101) fixedly connected between two pairs of four supports (102). Two of the long strip plates (1101) are located on the side of the conveyor belt (1003) near the bottom plate (101) and are fixedly connected to a rectangular plate (1102). The side of the rectangular plate (1102) near the conveyor belt (1003) is connected to a pushing plate (1104) through four guide sleeves (1103) arranged symmetrically in pairs. The side of the pushing plate (1104) away from the rectangular plate (1102) is fixedly connected to a plurality of pushing rods (1105). Each of the pushing rods (1105) is slidably connected between each conveyor belt (1003) and the support plate (1004).

7. An automatic sampling device for automotive parts according to claim 6, characterized in that: Each push rod (1105) has a push block (1106) fixedly connected to one end away from the rectangular plate (1102). Each push block (1106) has a frosted finish on the side close to the automotive parts, and the rectangular plate (1102) has a push rod motor (1107) on the side away from the automotive parts for pushing each push block (1106).

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