Wheel hub code scanning equipment and code scanning method

Abstract

The invention aims to solve the problem that the existing hub code scanning equipment is difficult to accurately position the position of a hub. The invention provides hub code scanning equipment and a code scanning method. The code scanning equipment comprises a code scanning structure, a conveying structure, a supporting frame action structure and a photoelectric assembly. The transmission structure comprises a roller conveyor belt, and the roller conveyor belt is fixedly arranged above the supporting frame; an action structure is arranged in a set area on the roller conveying belt, and the action structure is further fixedly connected with the supporting frame; the code scanning structure is arranged on the supporting frame and faces the roller conveying belt on the supporting frame. The photoelectric assembly comprises two sets of photoelectric sensors A, and the two photoelectric sensors A in each set of photoelectric sensors A are arranged on the two sides of the roller conveying belt correspondingly. The second group of photoelectric sensors A are arranged corresponding to the area of the action structure on the roller conveying belt; the first group of photoelectric sensors A is arranged in the beginning direction of the second group of photoelectric sensors A in the transmission direction of the roller conveyor belt; and the determination of the middle position of the hub is realized.

Description

Technical Field

[0001] The present invention relates to the field of wheel hub inspection, and in particular to a wheel hub code scanning device and a code scanning method. Background Art

[0002] After the production of the vehicle's wheel hub is completed, it needs to go through multiple inspection processes. In order to facilitate the recording of the wheel hub information, coding information is also set on the wheel hub, such as one-dimensional code or two-dimensional code. The existing wheel hub coding information acquisition device is usually installed on the side of the wheel hub transmission equipment, such as the content shown in the patent with the authorization announcement number CN213411894U and the application publication number CN111452004A. However, in the existing structure, it is difficult to accurately determine the position of the wheel hub on the conveyor belt. It is usually necessary for personnel to assist in determining the transmission position of the wheel hub, and after the wheel hub reaches the specified position, control the clamping of the wheel hub, and complete the code reading and other operations in the subsequent process. In the above process, personnel are required to assist in the operation, which is time-consuming and laborious, and the personnel require the wheel hub to move to the center position of the clamping component when the wheel hub is clamped, and there are certain requirements for the timing. Therefore, a fully automatic wheel hub code scanning device and code scanning method are needed. Summary of the invention

[0003] The purpose of the present invention is to solve the deficiencies of the prior art and provide a wheel hub code scanning device and a code scanning method.

[0004] In order to solve the above problems, the present invention adopts the following technical solutions: A wheel hub code scanning device includes a code scanning structure for scanning codes; also includes a transmission structure for transmitting the wheel hub, a support frame for supporting, an action structure for clamping, ejecting and rotating the wheel hub, and a photoelectric component for identifying the position of the wheel hub; the transmission structure includes a roller conveyor belt, which is fixedly arranged above the support frame; an action structure is arranged in a set area on the roller conveyor belt, and the action structure is also fixedly connected to the support frame; the code scanning structure is arranged on the support frame, and the code scanning structure faces the roller conveyor belt on the support frame; the photoelectric component includes two groups of photoelectric sensors A, wherein two photoelectric sensors A in each group of photoelectric sensors A are respectively arranged on both sides of the roller conveyor belt; the second group of photoelectric sensors A is arranged corresponding to the area of ​​the action structure on the roller conveyor belt; the first group of photoelectric sensors A is arranged on the starting side of the second group of photoelectric sensors A in the transmission direction of the roller conveyor belt.

[0005] Furthermore, the photoelectric component also includes two adjustment seats, wherein the two adjustment seats are respectively arranged on both sides of the roller conveyor belt, and the adjustment seats are overall in a long strip shape; a slide groove is arranged on the adjustment seat, and the photoelectric sensor A is slidably arranged in the slide groove.

[0006] Furthermore, the photoelectric component also includes a photoelectric seat; the slide groove on the adjustment seat is an inverted "T"-shaped through groove as a whole; a slider is slidably arranged in the slide groove; a photoelectric sensor A is fixedly arranged on the photoelectric seat; and the two sides of the photoelectric seat are fixedly connected to the two sliders respectively.

[0007] Furthermore, the roller conveyor belt is also provided with a baffle for converging the hub position; the baffle is arranged at an acute angle with the edge of the roller conveyor belt, wherein the acute angle faces forward in the transmission direction of the roller conveyor belt.

[0008] Furthermore, the action structure includes a first connecting plate for connecting the support frame, an ejection cylinder, an ejection plate, a second connecting plate, a guide column, a rotating device and a clamping device; wherein the first connecting plate is fixedly connected to the support frame, and the first connecting plate is located below the roller conveyor belt; the guide column is fixedly arranged between the first connecting plate and the second connecting plate, and the second connecting plate is located between the roller conveyor belt and the first connecting plate; the ejection plate is slidably arranged on the guide column; an ejection cylinder is also fixedly arranged on the first connecting plate or the second connecting plate, and the movable end of the ejection cylinder is connected to the ejection plate; a rotating device is also fixedly arranged on the ejection plate, and the rotating shaft in the rotating device is located in the vertical direction; a clamping device is arranged on the top of the rotating shaft, and the clamping device is used to clamp the wheel hub.

[0009] Furthermore, the rotating device also includes a rotating motor and a transmission assembly, wherein the transmission assembly is fixedly arranged on the ejection plate, the transmission assembly is transmission-connected to the rotating motor, and the transmission assembly is also transmission-connected to the rotating shaft.

[0010] Furthermore, the rotating shaft is provided with a raised sensing portion for sensing the angle of the rotating shaft, and the second connecting plate is provided with a proximity sensor corresponding to the sensing portion.

[0011] Furthermore, the clamping device includes an air claw and a clamping jaw; the air claw is fixedly arranged on the top of the rotating shaft; the air claw includes two cylinder bodies that can move towards or away from each other; two clamping jaws are respectively arranged on the two movable cylinder bodies of the air claw; the clamping jaws on the two cylinder bodies are arranged in a mirror image to each other; each clamping jaw is provided with two bearings for clamping the edge of the wheel hub; the two bearings on the same clamping jaw are spaced at a set distance.

[0012] Furthermore, the air claw also includes a side wall panel, an intermediate wall panel, a sliding rod and a piston rod; wherein there are two side wall panels, the two side wall panels are symmetrically arranged on both sides of the intermediate wall panel, and mutually parallel piston rods and at least one sliding rod are arranged between each side wall panel and the intermediate wall panel; the cylinder body is slidably arranged on the sliding rod; the cylinder body is also transmission-connected to the piston rod, and the piston rod controls the cylinder body to slide on the sliding rod.

[0013] A wheel hub code scanning method, based on the above-mentioned code scanning device, the code scanning method comprises the following steps: Step 1: The roller conveyor in the conveying structure conveys the hub placed thereon to a position close to the photovoltaic component; Step 2: The wheel hub passes through the first group of photoelectric sensors A, and the time t that the photoelectric sensor A is blocked by the wheel hub is obtained; Step 3: The wheel hub passes through the second group of photoelectric sensors A. When the second group of photoelectric sensors A is blocked for t / 2, the roller conveyor stops rolling and conveying, and the clamping device in the action structure is controlled to clamp the wheel hub, and at the same time, the ejection cylinder is controlled to lift the wheel hub upward; Step 4: The rotating device in the action structure moves, controls the clamping device to drive the wheel hub to rotate, and cooperates with the code scanning structure to complete the reading of the code on the wheel hub.

[0014] The beneficial effects of the present invention are: By setting two groups of photoelectric sensors A, the middle position of the wheel hub can be determined, so that the clamping device can accurately clamp the wheel hub transported on the roller conveyor belt and complete the code scanning in cooperation with the code scanning structure; By setting an adjustment seat, the position of the photoelectric sensor A can be easily adjusted to cope with wheels of different sizes; The clamping device includes an air claw and a clamping claw, and the air claw drives the clamping claw to clamp the wheel hub carried thereon; By setting the wheel hub scanning method, the process of automatic positioning and scanning of the wheel hub is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of Example 1; Figure 2 The action structure of Example 1 is shown in FIG. Figure 1 ; Figure 3 The action structure of Example 1 is shown in FIG. Figure 2 ; Figure 4 A schematic diagram of the action structure of Example 1 with one cylinder removed; Figure 5 Schematic diagram of the transmission structure and optoelectronic components of Example 1; Figure 6 An exploded view of the optoelectronic component of Example 1; Figure 7 This is an exploded diagram of the code scanning structure of Example 1; Description of the accompanying drawings: conveying structure 1, roller conveyor belt 11, baffle 12, fixed plate 13, support frame 2, action structure 3, first connecting plate 31, ejection cylinder 32, ejection plate 33, second connecting plate 34, guide column 35, rotating device 36, rotating shaft 361, rotating motor 362, transmission assembly 363, clamping device 37, air claw 371, clamping claw 372, side wall plate 373, middle wall plate 374, slide rod 375, piston rod 376, connecting bottom plate 377, protective tube 378, cylinder body 379, sensing part 38, proximity sensor 39, photoelectric component 4, photoelectric sensor A 41, adjustment seat 42, slide groove 43, slider 44, photoelectric seat 45, code scanning structure 5, code reading device 51, moving structure 52, linear slide rail 521, support base 522, photoelectric sensor B 53, baffle 54, hub 6, encoder 61. DETAILED DESCRIPTION

[0016] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0017] It should be noted that the illustrations provided in the following embodiments are only used to schematically illustrate the basic concept of the present invention. The figures only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0018] Embodiment 1: like Figure 1 to Figure 7As shown, a wheel hub code scanning device includes a code scanning structure 5 for scanning a code 61. In this example, a raised one-dimensional code is provided on the wheel hub 6. The one-dimensional code includes bar codes of different widths. When the code scanning structure 5 scans different bar codes in width and spacing, it can obtain the bar code information to identify the code 61 of the wheel hub 6. It should be noted that the method for the code scanning structure 5 to read the one-dimensional code 61 adopts the existing technology; it also includes a transmission structure 1 for transmitting the wheel hub 6, a support frame 2 for supporting, an action structure 3 for clamping, ejecting and rotating the wheel hub 6, and an optoelectronic component 4 for identifying the position of the wheel hub 6; the transmission structure includes a roller conveyor belt 11, a roller conveyor The belt 11 is fixedly arranged above the support frame 2; an action structure 3 is arranged in a set area on the roller conveyor belt 11, and the action structure 3 is also fixedly connected to the support frame 2; a code scanning structure 5 is arranged on the support frame 2, and the code scanning structure 5 faces the roller conveyor belt 11 on the support frame 2; the photoelectric component 4 includes two groups of photoelectric sensors A41, wherein the two photoelectric sensors A41 in each group of photoelectric sensors A41 are respectively arranged on both sides of the roller conveyor belt 11; the second group of photoelectric sensors A41 is arranged corresponding to the area of ​​the action structure 3 on the roller conveyor belt 11; the first group of photoelectric sensors A41 is arranged in the starting direction of the second group of photoelectric sensors A41 in the transmission direction of the roller conveyor belt 11.

[0019] The support frame 2 is a hollow quadrangular prism frame structure; a roller conveyor belt 11 is arranged on the top of the support frame 2; an action structure 3 is arranged inside the support frame 2, wherein the part of the roller conveyor belt 11 corresponding to the action structure 3 is not provided with a roller, so as to facilitate the upward movement of the action structure 3 and lift up the wheel hub 6; a code scanning structure 5 is also arranged on the side of the support frame 2. The code scanning structure 5 includes a code reading device 51 for reading the code 61 set on the wheel hub 6 and a moving structure 52 for adjusting the position of the code reading device 51; the moving structure 52 is fixedly arranged on the side of the support frame 2; the code reading device 51 is arranged on the moving structure 52, and the moving structure 52 controls the code reading device 51 to move in a set direction; in this example, the wheel hub 6 is horizontally transported on the upper surface of the roller conveyor belt 11 in a horizontally lying state, and the code reading device 51 is controlled by the moving device to move up and down in the vertical direction to identify the one-dimensional code 61 formed by steel stamping or casting on the outer side of the wheel hub 6; it should be noted that.

[0020] The mobile structure 52 includes a linear slide 521; a sliding block capable of sliding along the linear slide 521 is arranged on the linear slide 521, and the code reading device 51 is arranged on the sliding block of the linear slide 521; in this example, the linear slide 521 adopts a GCR embedded module, and the rotation of the internal ball screw is controlled by a motor, and the rotation of the ball screw is converted into the sliding of the sliding block, so as to control the relative position of the code reading device 51 on the sliding block. The moving direction of the linear slide 521 is parallel to the axial direction of the wheel hub 6. In this example, the wheel hub 6 is in a horizontal lying state as a whole, and the axis of the wheel hub 6 is in the vertical direction at this time, so the sliding direction of the linear slide 521 is the vertical direction. It should be noted that in some other embodiments, the mobile structure 52 can also adopt other transmission methods, such as a motor cooperates with a rack or electric slide structure meshing therewith. By arranging the code reading device 51 in the code scanning structure 5 on the moving structure 52 that can move in a set direction, it is convenient to control the movement of the code reading device 51 to complete the recognition process of the code 61 on the side of the wheel hub 6.

[0021] The mobile structure 52 further includes a support base 522 , which is detachably disposed on a side of the support device; the linear slide rail 521 is fixedly disposed on the support base 522 .

[0022] The linear guide rail 521 is also provided with a photoelectric sensor B53 for detecting the position of the code reading device 51; a baffle 54 corresponding to the photoelectric sensor B53 is provided on the sliding block of the linear guide rail 521 or the code reading device 51. When the baffle 54 is located in the photoelectric sensor B53, it indicates that the code reading device 51 is already located near the photoelectric sensor B53. In this example, there are three photoelectric sensors B53, and the three photoelectric sensors B53 are respectively set at the set positions on the linear guide rail 521. In this example, two photoelectric sensors B53 are respectively set at positions close to the two ends of the linear guide rail 521, and another photoelectric sensor B53 is set on the other side of the linear guide rail 521; two baffles 54 are respectively provided on both sides of the sliding block. By providing the photoelectric sensor B53 on the linear guide rail 521 and cooperating with the baffle 54, the position detection of the code reading device 51 is realized, and the code reading device 51 is prevented from exceeding the height area of ​​the hub 6, which makes it difficult to align with the code 61 on the hub 6.

[0023] The photoelectric assembly 4 also includes two adjustment seats 42, wherein the two adjustment seats 42 are respectively arranged on both sides of the roller conveyor belt 11, and the adjustment seats 42 are in the shape of a long strip as a whole; a slide groove 43 is arranged on the adjustment seat 42, and the photoelectric sensor A41 is slidably arranged on the slide groove 43. In this example, the photoelectric assembly 4 also includes a photoelectric seat 45; the slide groove 43 on the adjustment seat 42 is in the shape of an inverted "T"-shaped through groove as a whole; a slider 44 is slidably arranged in the slide groove 43, and the slider 44 adopts a T-shaped nut; the T-shaped nut is located in the slide groove 43, and the middle part of the T-shaped nut is fixedly connected to the photoelectric seat 45 through a threaded structure; in this example, the two ends of the photoelectric seat 45 are respectively fixedly connected to the two sliders 44; the photoelectric seat 45 is fixedly provided with a photoelectric sensor A41.

[0024] The roller conveyor belt 11 is also provided with a baffle 12 for converging the position of the hub 6; the baffle 12 is arranged at an acute angle with the edge of the roller conveyor belt 11, wherein the acute angle faces forward in the transmission direction of the roller conveyor belt 11. In this example, two baffles 12 are respectively arranged on both sides of the roller conveyor belt 11, and the two baffles 12 are also respectively connected to the edge of the roller conveyor belt 11 through a fixing plate 13; the fixing plate 13 is in the shape of a right-angled triangle plate as a whole.

[0025] The action structure 3 includes a first connecting plate 31 for connecting the support frame 2, an ejection cylinder 32, an ejection plate 33, a second connecting plate 34, a guide column 35, a rotating device 36 and a clamping device 37; wherein the first connecting plate 31 is fixedly connected to the support frame 2, and the first connecting plate 31 is located below the roller conveyor belt 11; the guide column 35 is fixedly arranged between the first connecting plate 31 and the second connecting plate 34. In this example, the first connecting plate 31 and the second connecting plate 34 are both in the shape of square plates, and four guide columns 35 are respectively arranged at the four corners near the first connecting plate 31; the second connecting plate 34 is located at the roller conveyor belt 11; between the conveyor belt 11 and the first connecting plate 31; the ejector plate 33 is slidably arranged on the guide column 35 through a linear bearing; an ejector cylinder 32 is also fixedly arranged on the first connecting plate 31 or the second connecting plate 34, and the movable end of the ejector cylinder 32 is connected to the ejector plate 33; in this example, there are two ejector cylinders 32, and both ejector cylinders 32 are arranged on the first connecting plate 31 located below; a rotating device 36 is also fixedly arranged on the ejector plate 33, and a rotating shaft 361 in the rotating device 36 is located in the vertical direction; a clamping device 37 is arranged on the top of the rotating shaft 361, and the clamping device 37 is used to clamp the wheel hub 6. The rotating device 36 also includes a rotating motor 362 and a transmission assembly 363, wherein the transmission assembly 363 is fixedly arranged on the ejection plate 33, the transmission assembly 363 is transmission-connected to the rotating motor 362, and the transmission assembly 363 is also transmission-connected to the rotating shaft 361. The rotating motor 362 rotates to drive the rotating shaft 361 to rotate, thereby controlling the rotation of the clamping device 37 fixedly arranged on the rotating shaft 361.

[0026] The rotating shaft 361 is provided with a protruding sensing portion 38 for sensing the angle of the rotating shaft 361, and the second connecting plate 34 is provided with a proximity sensor 39 corresponding to the sensing portion 38. In this example, when the sensing portion 38 is opposite to the proximity sensor 39, the clamping device 37 on the rotating shaft 361 is parallel to the roller axis of the roller conveyor belt 11. In this state, it is convenient to push the clamping device 37 upward, or to retract the clamping device 37 downward, and this state is used as the initial state.

[0027] The clamping device 37 includes an air gripper 371 and a clamping jaw 372; the air gripper 371 is fixedly arranged on the top of the rotating shaft 361; the air gripper 371 includes two cylinder bodies 379 that can move towards or away from each other; two clamping jaws 372 are respectively arranged on the two movable cylinder bodies 379 of the air gripper 371; the clamping jaws 372 on the two cylinder bodies 379 are arranged in mirror image with each other; each clamping jaw 372 is provided with two bearings for clamping the edge of the hub 6; the two bearings on the same clamping jaw 372 are spaced apart by a set distance. The air gripper 371 further includes a side wall plate 373, a middle wall plate 374, a slide rod 375 and a piston rod 376; wherein the side wall plates 373 are two in total, and the two side wall plates 373 are symmetrically arranged on both sides of the middle wall plate 374, and a piston rod 376 and at least one slide rod 375 parallel to each other are arranged between each side wall plate 373 and the middle wall plate 374; the cylinder body 379 is slidably arranged on the slide rod 375; the cylinder body 379 is also in transmission connection with the piston rod 376, and the piston rod 376 controls the cylinder body 379 to slide on the slide rod 375. The clamping device 37 further includes a connecting bottom plate 377, which is used to connect the side wall plates 373 and the middle wall plate 374, and is also connected to the rotating shaft 361.

[0028] In order to limit the range of motion of the cylinder 379 on the piston rod 376 and the slide rod 375 and prevent the cylinder 379 from colliding with the side wall plate 373 or the middle wall plate 374, elastic protective tubes 378 are respectively provided on the side wall plate 373 and the middle wall plate 374, one end of the protective tube 378 is connected to the side wall plate 373 or the middle wall plate 374, and the other end of the protective tube 378 faces the cylinder 379. In this example, the protective tube 378 includes an outer tube and an inner tube sleeved with the outer tube, and the inner tube is slidably provided inside the outer tube.

[0029] A wheel hub code scanning method, based on the above-mentioned code scanning device, the code scanning method comprises the following steps: Step 1: The roller conveyor belt 11 in the conveying structure 1 conveys the hub 6 placed thereon to a position close to the optoelectronic component 4; Step 2: The wheel hub 6 passes through the first group of photoelectric sensors A41, and the time length t that the photoelectric sensor A41 is blocked by the wheel hub 6 is obtained; Step 3: The wheel hub 6 passes through the second group of photoelectric sensors A41. When the second group of photoelectric sensors A41 is blocked for a period of t / 2, the roller conveyor stops rolling and conveying, and the clamping device 37 in the action structure 3 is controlled to clamp the wheel hub 6, and at the same time, the ejection cylinder 32 is controlled to move to lift the wheel hub 6 upward; Step 4: The rotating device 36 in the action structure 3 is actuated to control the clamping device 37 to drive the wheel hub 6 to rotate, and cooperate with the code scanning structure 5 to complete the reading of the code 61 on the wheel hub 6.

[0030] In step 1, after passing through the baffle 12 on the roller conveyor belt 11, the wheel hub 6 is blocked by the baffle 12 and moves toward the middle position of the roller conveyor belt 11.

[0031] In step 2, the second group of photoelectric sensors A 41 is arranged at a position directly opposite to the clamping device 37 .

[0032] In the step 4, the code reading device 51 in the code scanning structure 5 will move to the set height according to the set value to complete the code reading operation; when dealing with wheel hubs 6 of different sizes, the position of the photoelectric sensor B53 on the linear slide rail 521 can be adjusted to control the height of the code reading device 51, or the number of rotations of the motor can be directly adjusted to control the height of the code reading device 51.

[0033] During the implementation process, by setting two groups of photoelectric sensors A41, the middle position of the wheel hub 6 is determined, which facilitates the clamping device 37 to accurately clamp the wheel hub 6 transported on the roller conveyor 11, and cooperate with the code scanning structure 5 to complete the code scanning; by setting the adjustment seat 42, the position of the photoelectric sensor A41 is conveniently installed and adjusted to cope with wheel hubs 6 of different sizes; by setting the clamping device 37 including the air claw 371 and the clamping claw 372, the air claw 371 drives the clamping claw 372 to clamp the wheel hub 6 carried thereon; by setting the wheel hub 6 scanning method, the process of automatic positioning and scanning of the wheel hub 6 is completed.

[0034] The above description is only a specific example of the present invention and does not constitute any limitation to the present invention. It is obvious that for professionals in this field, after understanding the content and principle of the present invention, various modifications and changes in form and details may be made without departing from the principle and structure of the present invention, but these modifications and changes based on the idea of ​​the present invention are still within the scope of protection of the claims of the present invention.

Claims

1. A wheel hub code scanning device, comprising a code scanning structure (5) for scanning a code (61); characterized in that: It also includes a transmission structure (1) for transmitting the wheel hub (6), a support frame (2) for supporting, an action structure (3) for clamping, ejecting and rotating the wheel hub (6), and a photoelectric component (4) for identifying the position of the wheel hub (6); the transmission structure includes a roller conveyor belt (11), the roller conveyor belt (11) is fixedly arranged above the support frame (2); the action structure (3) is arranged in a set area on the roller conveyor belt (11), and the action structure (3) is also fixedly connected to the support frame (2); the code scanning structure (5) is arranged on the support frame (2), The code scanning structure (5) faces the roller conveyor belt (11) on the support frame (2); the photoelectric component (4) comprises two groups of photoelectric sensors A (41), wherein the two photoelectric sensors A (41) in each group of photoelectric sensors A (41) are respectively arranged on both sides of the roller conveyor belt (11); the second group of photoelectric sensors A (41) is arranged corresponding to the area of ​​the action structure (3) on the roller conveyor belt (11); and the first group of photoelectric sensors A (41) is arranged on the starting side of the second group of photoelectric sensors A (41) in the transmission direction of the roller conveyor belt (11).

2. A wheel hub code scanning device according to claim 1, characterized in that: The photoelectric assembly (4) further comprises two adjustment seats (42), wherein the two adjustment seats (42) are respectively arranged on both sides of the roller conveyor belt (11), and the adjustment seats (42) are overall in the shape of a long strip; a slide groove (43) is arranged on the adjustment seat (42), and the photoelectric sensor A (41) is slidably arranged in the slide groove (43).

3. A wheel hub code scanning device according to claim 2, characterized in that: The photoelectric assembly (4) further comprises a photoelectric seat (45); the slide groove (43) on the adjustment seat (42) is in the form of an inverted "T"-shaped through groove as a whole; a slider (44) is slidably arranged in the slide groove (43); a photoelectric sensor A (41) is fixedly arranged on the photoelectric seat (45); and two sides of the photoelectric seat (45) are respectively fixedly connected to the two sliders (44).

4. The wheel hub code scanning device according to claim 1, characterized in that: The roller conveyor belt (11) is also provided with a baffle (12) for converging the position of the wheel hub (6); the baffle (12) and the edge of the roller conveyor belt (11) are arranged at an acute angle, wherein the acute angle faces forward in the transmission direction of the roller conveyor belt (11).

5. The wheel hub code scanning device according to claim 1, characterized in that: The action structure (3) comprises a first connecting plate (31) for connecting the support frame (2), an ejection cylinder (32), an ejection plate (33), a second connecting plate (34), a guide column (35), a rotating device (36) and a clamping device (37); wherein the first connecting plate (31) is fixedly connected to the support frame (2), and the first connecting plate (31) is located below the roller conveyor belt (11); the guide column (35) is fixedly arranged between the first connecting plate (31) and the second connecting plate (34), and the second connecting plate (34) is located above the roller conveyor belt (11); 11) and the first connecting plate (31); the ejection plate (33) is slidably arranged on the guide column (35); an ejection cylinder (32) is also fixedly arranged on the first connecting plate (31) or the second connecting plate (34), and the movable end of the ejection cylinder (32) is connected to the ejection plate (33); a rotating device (36) is also fixedly arranged on the ejection plate (33), and a rotating shaft (361) in the rotating device (36) is located in the vertical direction; a clamping device (37) is arranged on the top of the rotating shaft (361), and the clamping device (37) is used to clamp the wheel hub (6).

6. The wheel hub code scanning device according to claim 5, characterized in that: The rotating device (36) further comprises a rotating motor (362) and a transmission assembly (363), wherein the transmission assembly (363) is fixedly disposed on the ejection plate (33), the transmission assembly (363) is transmission-connected to the rotating motor (362), and the transmission assembly (363) is also transmission-connected to the rotating shaft (361).

7. The wheel hub code scanning device according to claim 6, characterized in that: The rotating shaft (361) is provided with a raised sensing portion (38) for sensing the angle of the rotating shaft (361), and the second connecting plate (34) is provided with a proximity sensor (39) corresponding to the sensing portion (38).

8. The wheel hub code scanning device according to claim 5, characterized in that: The clamping device (37) comprises an air gripper (371) and a clamping jaw (372); the air gripper (371) is fixedly arranged on the top of the rotating shaft (361); the air gripper (371) comprises two cylinder bodies (379) that can move towards or away from each other; two clamping jaws (372) are respectively arranged on the two movable cylinder bodies (379) of the air gripper (371); the clamping jaws (372) on the two cylinder bodies (379) are arranged in a mirror image with each other; each clamping jaw (372) is provided with two bearings for clamping the edge of the wheel hub (6); and the two bearings on the same clamping jaw (372) are spaced apart by a set distance.

9. The wheel hub code scanning device according to claim 8, characterized in that: The air claw (371) further comprises a side wall plate (373), an intermediate wall plate (374), a sliding rod (375) and a piston rod (376); wherein there are two side wall plates (373), the two side wall plates (373) are symmetrically arranged on both sides of the intermediate wall plate (374), and mutually parallel piston rods (376) and at least one sliding rod (375) are arranged between each side wall plate (373) and the intermediate wall plate (374); the cylinder body (379) is slidably arranged on the sliding rod (375); the cylinder body (379) is also transmission-connected to the piston rod (376), and the piston rod (376) controls the cylinder body (379) to slide on the sliding rod (375).

10. A wheel hub code scanning method, characterized in that: Based on the code scanning device according to any one of claims 1 to 9, the code scanning method comprises the following steps: Step 1: The roller conveyor belt (11) in the conveying structure (1) conveys the hub (6) placed thereon to a position close to the optoelectronic component (4); Step 2: the wheel hub (6) passes through the first group of photoelectric sensors A (41), and the time length t during which the photoelectric sensors A (41) are blocked by the wheel hub (6) is obtained; Step 3: the wheel hub (6) passes through the second group of photoelectric sensors A (41). When the second group of photoelectric sensors A (41) is blocked for a period of t / 2, the roller conveyor belt (11) stops rolling and conveying, and the clamping device (37) in the action structure (3) is controlled to clamp the wheel hub (6), and at the same time, the ejection cylinder (32) is controlled to move to lift the wheel hub (6) upward. Step 4: The rotating device (36) in the action structure (3) is actuated to control the clamping device (37) to drive the wheel hub (6) to rotate, and cooperate with the code scanning structure (5) to complete the reading of the code (61) on the wheel hub (6).

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