Automobile wheel hub marking all-in-one machine

Abstract

The utility model relates to a kind of automobile wheel hub marking integrated machine, it includes: material conveying mechanism, the material conveying mechanism is used to receive automobile wheel hub and convey it downstream;Material blocking mechanism, the material blocking mechanism is liftable and is installed on the material conveying mechanism, for making the automobile wheel hub pause movement;Centering mechanism, the centering mechanism is adjustably installed on the material conveying mechanism, for clamping and adjusting the position of the automobile wheel hub;Marking mechanism, the marking mechanism includes support assembly, bidirectional movement component, marking mobile unit and laser marking head the laser marking head is installed on the Z-axis movement component, for with the centering mechanism cooperation to mark on the circumferential surface of the automobile wheel hub. So that laser marking head can mark on the circumferential surface of automobile wheel hub, simple structure, good reliability.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical equipment technology, and relates to a marking machine, specifically an integrated marking machine for automobile wheel hubs. Background Technology

[0002] A wheel rim is a cylindrical metal component mounted on an axle, supporting the tire from its inner contour; it is also called a wheel rim, steel rim, wheel, or tire rim. Wheel rims come in many varieties depending on their diameter, width, molding method, and materials. Depending on the characteristics and needs of different car models, the surface treatment of wheel rims also varies, broadly categorized into painted and electroplated finishes. For ordinary car models, aesthetics are less of a concern; good heat dissipation is a basic requirement, and painted finishes are generally used, involving spraying and then electroplating. This method is relatively economical and produces vibrant colors that last a long time. Electroplated rims are further divided into electroplated silver, water-based electroplating, and pure electroplating. While electroplated silver and water-based electroplating offer bright and vivid colors, their color retention is relatively short-lived; pure electroplating offers long-lasting color retention but is of higher quality and more expensive. Chinese utility model patent application number 202420122802.9 discloses an automatic wheel hub marking machine, relating to the technical field of wheel hub marking auxiliary devices. It aims to solve the problems of existing wheel hub marking devices, which use two horizontally positioned rollers for horizontal positioning of the wheel hub and a vertically positioned positioning plate for end face positioning. To prevent wheel hub misalignment during marking, a pressure plate is manually used to press the wheel hub firmly before marking, resulting in low work efficiency and high labor intensity for workers. The proposed automatic wheel hub marking machine includes a conveyor line with a frame connected to it, wheel hubs mounted on the conveyor line, a pressure plate slidably mounted on the frame, a base mounted on the pressure plate, and symmetrically distributed pressing cylinders on the base. The movable end of each pressing cylinder communicates with the pressure plate. A stopper is fixedly connected to the frame, and the wheel hub abuts against the stopper. Guide rails are symmetrically distributed on the frame, and supports are slidably connected to the guide rails. This automatic wheel hub marking machine requires a vertically positioned positioning plate for end face positioning, resulting in a complex structure and high cost. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an integrated marking machine for automobile wheel hubs.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: an integrated marking machine for automobile wheel hubs, comprising: A material conveying mechanism for receiving and transporting automobile wheel hubs downstream; A material blocking mechanism, which is vertically and flexibly mounted on the material conveying mechanism, is used to stop the movement of the automobile wheel hub; A centering mechanism, which is adjustablely mounted on the conveying mechanism, is used to clamp and adjust the position of the automobile wheel hub; A marking mechanism, comprising a support assembly, a bidirectional motion assembly, a marking moving unit, and a laser marking head; The support assembly includes a support frame mounted on one side of the material conveying mechanism and a support platform mounted on the top of the support frame; the bidirectional motion assembly includes a first linear motion module mounted on the support platform, a first adapter plate slidably mounted on the first linear motion module, a carrier frame mounted on the first adapter plate, a second linear motion module mounted on the carrier frame and vertically arranged, and a second adapter plate slidably mounted on the second linear motion module; the marking motion unit includes a receiving frame mounted on the second adapter plate, an X-axis motion assembly mounted in the receiving frame, and a Z-axis motion assembly mounted on the X-axis motion assembly and located in the receiving frame; the laser marking head is mounted on the Z-axis motion assembly and is used to cooperate with the centering mechanism to mark on the circumferential surface of the automobile wheel hub.

[0005] Optimally, the support assembly includes four parallel and spaced support columns, a connecting crossbar installed at the lower part of two adjacent support columns, a support foot installed at the bottom of each support column, and a reinforcing crossbar installed at the upper part of two adjacent support columns. The support platform is installed on the top of the four support columns and supported on the reinforcing crossbar. The accommodating frame includes a vertically arranged carrier plate mounted on the second adapter plate and a circumferential enclosure mounted on the periphery of the carrier plate and forming a ring, with an accommodating space formed between the carrier plate and the circumferential enclosure.

[0006] Furthermore, the X-axis moving assembly includes a first slide rail mounted on the carrier plate and horizontally arranged, at least one first slider slidably mounted on the first slide rail, a third adapter plate mounted on the first slider, a first pulley rotatably mounted on the carrier plate, a first motor mounted on the outer surface of the carrier plate and having a first output shaft passing through the carrier plate, a second pulley mounted on the first output shaft, and a first belt wound around the first pulley and the second pulley, wherein the first belt is connected to the third adapter plate; The Z-axis moving assembly includes a second slide rail mounted vertically on the third adapter plate, a second slider slidably mounted on the second slide rail, a fourth adapter plate mounted on the second slider, a third pulley rotatably mounted on the third adapter plate, a second motor mounted on the inner surface of the third adapter plate with its second output shaft passing through the third adapter plate, a fourth pulley mounted on the second output shaft, and a second belt wound around the third pulley and the fourth pulley, the second belt being connected to the fourth adapter plate.

[0007] Optimally, the material conveying mechanism includes two sets of support units arranged vertically and spaced apart, two parallel support beams mounted one-to-one on the support units, multiple drive rollers rotatably mounted on the two support beams and spaced apart, at least one reinforcing rod installed between the two sets of support units, a carrier frame installed between the support beams and the reinforcing rod, a drive motor installed on the carrier frame, a first transmission chain connected to the drive motor, and multiple short transmission chains. Two drive gears are installed at a distance from one end of each drive roller, and the first drive chain is also connected to one of the drive gears of at least one of the drive rollers; Each of the aforementioned short transmission chains is mounted on two adjacent and corresponding transmission gears; Each set of the support unit includes two support rods spaced apart, a connecting crossbar connecting the two adjacent support rods, and a second support foot installed at the bottom of each support rod; The material conveying mechanism also includes a mounting frame installed between the supporting crossbeam and the connecting crossbar, corresponding to the marking mechanism.

[0008] Furthermore, the material blocking mechanism includes a cylinder mounted on the mounting bracket, a lifting plate mounted on the cylinder and extending above the transmission roller, and a buffer block mounted on the lifting plate to block the vehicle wheel hub.

[0009] Furthermore, the centering mechanism includes a gearbox mounted on the mounting frame, a drive motor connected to the gearbox, two first vertical shafts rotatably mounted on the gearbox and spaced apart, a first polyurethane sleeve fitted on the first vertical shafts and higher than the drive rollers, two second vertical shafts movably mounted on the mounting frame and corresponding to the two first drive shafts, and a second polyurethane sleeve fitted on the second vertical shafts and higher than the drive rollers.

[0010] Furthermore, the centering mechanism also includes two sliding rails spaced apart and mounted on the mounting frame, a sliding block slidably mounted on each of the sliding rails, a transfer base plate mounted on the sliding block, a cylinder connecting frame mounted on the bottom surface of the transfer base plate, and a drive cylinder mounted on the mounting frame and connected to the cylinder connecting frame. The second vertical shaft is mounted on the transfer base plate. The beneficial effects of this application are: This utility model, an integrated marking machine for automotive wheel hubs, combines a material feeding mechanism, a material blocking mechanism, a centering mechanism, and a marking mechanism. This allows the material blocking mechanism to hold an automotive wheel hub, and the centering mechanism to clamp it and align it with the laser marking head, enabling the laser marking head to mark on the circumference of the automotive wheel hub. The structure is simple and the reliability is high. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the integrated marking machine for automobile wheel hubs according to this utility model; Figure 2 This is a top view of the integrated marking machine for automobile wheel hubs according to this utility model; Figure 3 This is a schematic diagram of the material conveying mechanism in the integrated marking machine for automobile wheel hubs of this utility model; Figure 4 This is a schematic diagram of the marking mechanism in the integrated marking machine for automobile wheel hubs of this utility model; Figure 5 This is a partial structural diagram of the marking mechanism in the integrated marking machine for automobile wheel hubs of this utility model. Detailed Implementation

[0012] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0013] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0014] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0015] like Figure 1 and Figure 2 The integrated marking machine for automobile wheel hubs shown mainly includes a marking mechanism, a material conveying mechanism 4, a material blocking mechanism 5, and a centering mechanism 6.

[0016] The material conveying mechanism 4 is used to receive the car wheel hub 1' and convey it downstream (the upstream and downstream are defined according to the conveying direction of the car wheel hub 1' in this application); the material blocking mechanism 5 is elliptically mounted on the material conveying mechanism 4 to stop the movement of the car wheel hub 1'; the centering mechanism 6 is adjustablely mounted on the material conveying mechanism 4 to clamp and adjust the position of the car wheel hub 1'.

[0017] The marking mechanism includes a support assembly 1, a bidirectional motion assembly 2, a marking moving unit 3, and a laser marking head. In this embodiment, the support assembly 1 includes a support frame installed on one side of the material conveying mechanism 4 and a support platform 15 installed on the top of the support frame. Specifically, the support assembly 1 includes four parallel and spaced support columns 11 (the projections of these four support columns 11 on the ground are located at the four corners of a rectangle or a square), connecting crossbars 13 installed at the lower part of two adjacent support columns 11 (therefore there are four connecting crossbars 13), support feet 12 installed at the bottom of each support column 11, and reinforcing crossbars 14 installed at the upper part of two adjacent support columns 11 (therefore there are also four reinforcing crossbars 14, which correspond one-to-one with the connecting crossbars 13 and are located above the connecting crossbars 13), so that the support platform 15 is installed on the top of the four support columns 11 and supported on the reinforcing crossbars 14, thereby achieving strong support for the support platform 15.

[0018] The bidirectional motion assembly 2 includes a first linear motion module 21 mounted on a support platform 15, a first adapter plate 22 slidably mounted on the first linear motion module 21 (since the first linear motion module 21 has a slider, the first adapter plate 22 is mounted on the slider, so that when the first linear motion module 21 is working, the slider can drive the first adapter plate 22 to move relative to the first linear motion module 21, so that the first adapter plate 22 is slidably mounted on the first linear motion module 21; the same applies below), and a support frame 2 mounted on the first adapter plate 22. 3. A second linear motion module 24 mounted vertically on the support frame 23 and a second adapter plate slidably mounted on the second linear motion module 24 (the connection method between the second adapter plate and the second linear motion module 24 is the same as above); In this embodiment, the first linear motion module 21 is set perpendicular to the hub conveyor line, so that the first adapter plate 22 can approach or move away from the aforementioned hub conveyor line, and ultimately the second adapter plate can move in two directions (at this time, the movement range of the first adapter plate 22 and the second adapter plate is large).

[0019] The marking moving unit 3 includes a receiving frame mounted on the second adapter plate, an X-axis moving component 33 mounted within the receiving frame, and a Z-axis moving component 34 mounted on the X-axis moving component 33 and located within the receiving frame. Specifically, the receiving frame includes a vertically arranged carrier plate 32 mounted on the second adapter plate and a circumferential barrier 31 (i.e., a hollow square frame) mounted on the circumference of the carrier plate 32 and forming a accommodating space between the carrier plate 32 and the circumferential barrier 31.

[0020] In this embodiment, the X-axis moving assembly 33 includes a first slide rail 331 (the first slide rail 331 is perpendicular to the first linear moving module 21) mounted horizontally on the carrier plate 32, at least one first slider 332 slidably mounted on the first slide rail 331, a third adapter plate 333 mounted on the first slider 332, a first pulley (not shown in the figure; for example, a mounting shaft perpendicular to the carrier plate 32 can be mounted on the carrier plate 32 via a bearing, and the first pulley can be fitted onto the mounting shaft), a first motor (not shown in the figure, i.e., the first motor is mounted on the surface away from the peripheral enclosure 31, and it has a first output shaft) mounted on the outer surface of the carrier plate 32 and with its first output shaft passing through the carrier plate 32), a second pulley mounted on the first output shaft, and a first belt wound around the first pulley and the second pulley. The first belt is connected to the third adapter plate 333. Thus, when the first motor is working, the third adapter plate 333 can be driven to slide on the first slider 332 via the first belt.

[0021] The Z-axis moving assembly 34 includes a second slide rail 340 mounted vertically on a third adapter plate 333, a second slider 341 slidably mounted on the second slide rail 340, a fourth adapter plate 342 mounted on the second slider 341, a third pulley 344 rotatably mounted on the third adapter plate 333 (mounted in the same manner as above), a second motor (the second motor has a second output shaft) mounted on the inner surface of the third adapter plate 333 and having its second output shaft passing through the third adapter plate 333, a fourth pulley mounted on the second output shaft, and a second belt 343 wound around the third pulley 344 and the fourth pulley. The second belt 343 is connected to the fourth adapter plate 342. Thus, when the second motor is working, the fourth adapter plate 342 can be driven to slide on the second slider 341 via the second belt 343.

[0022] The laser marking head is mounted on the Z-axis moving assembly 34, allowing it to perform large (non-precision) and small (precision) movements under the drive of the aforementioned structure. This enables it to precisely move to the side of the wheel hub for marking, resulting in high reliability, stability, and accuracy. The laser marking head can be a conventional one, such as the one disclosed in Chinese invention patent application number 202410804194.4.

[0023] In this embodiment, the first linear motion module 21 and the second linear motion module 24 can be independently implemented using existing conventional methods (such as those disclosed in Chinese Invention Patent Application No. 202310602533.6) to achieve their own automated control. Furthermore, a PLC controller (Mitsubishi FX2N series-MT model) can be added to connect to the first motor and the second motor (both are conventional bidirectional stepper motors). This allows for automated control of the first and second motors via the PLC controller, improving the automation level and marking efficiency of the entire wheel hub pre-shipment traceability marking mechanism.

[0024] The material conveying mechanism 4 includes two sets of support units arranged vertically and spaced apart; two parallel support beams 41 mounted on the support units one to one; multiple drive rollers 47 rotatably mounted on the two support beams 41 and spaced apart (specifically, each drive roller 47 has a cylindrical protrusion at both ends, such that the cylindrical protrusion inserts into the two support beams 41 with a gap between the cylindrical protrusion and the support beams 41, so that the drive roller 47 can rotate relative to the support beams 41 under the action of external force); at least one reinforcing rod 45 (one in this application) installed between the two sets of support units; and rods installed on the support beams 41 and the reinforcing rods 45. The system comprises a carrier 46 between rods 45, a drive motor mounted on the carrier 46, a first transmission chain 49 connected to the drive motor, and multiple short transmission chains 48. In this embodiment, one end of each transmission roller 47 is equipped with two spaced-apart transmission gears 471, and the first transmission chain 49 is also connected to one transmission gear 471 of at least one transmission roller 47. Each short transmission chain 48 is mounted on two adjacent and corresponding transmission gears 471. Thus, when the drive motor operates, it can drive the first transmission chain 49 to rotate, thereby driving all the transmission rollers 47 to rotate through the aforementioned multiple transmission gears 471 and multiple short transmission chains 48. In this embodiment, each support unit includes two spaced-apart support rods 42, a connecting crossbar 44 connecting two adjacent support rods 42, and a second support foot 43 mounted at the bottom of each support rod 42. The material conveying mechanism 4 also includes a mounting frame 40 mounted between the support crossbeam 41 and the connecting crossbar 44 and corresponding to the marking mechanism.

[0025] The material blocking mechanism 5 includes a cylinder 51 mounted on the mounting bracket 40, a lifting plate 52 mounted on the cylinder 51 and extending above the drive roller 47, and a buffer block 53 mounted on the lifting plate 52 to block the car wheel hub 1'. When a car wheel hub 1' is conveyed, the cylinder 51 operates, causing the lifting plate 52 to rise above the drive roller 47, thereby using the lifting plate 52 and the buffer block 53 to block the car wheel hub 1'. In this embodiment, it is preferable to add a sensor (upstream of the material blocking mechanism 5) to the support beam 41, and connect the sensor, cylinder 51, and the aforementioned PLC controller to detect whether a car wheel hub 1' is passing by. When a car wheel hub 1' is detected, the sensor sends a signal to the PLC controller, which then controls the cylinder 51 to work, causing the lifting plate 52 to rise above the transmission roller 47 to block the car wheel hub 1'. It is also preferable to connect the aforementioned drive motor to the PLC controller, so that when the cylinder 51 works, the PLC controller synchronously controls the drive motor to stop working, and the transmission roller 47 stops rotating. After the centering mechanism 6 and the marking mechanism have completed their work, the control cylinder 51 is reset (the lifting plate 52 is lower than the transmission roller 47), and the PLC controller then controls the drive motor to work, causing the transmission roller 47 to rotate and continue to transport materials downstream.

[0026] The centering mechanism 6 includes a gearbox mounted on the mounting frame 40, a drive motor connected to the gearbox, two first vertical shafts rotatably mounted on the gearbox and spaced apart (each first vertical shaft is vertically mounted on a corresponding gear; when the drive motor is working, it can drive the gears in the gearbox to rotate, thereby driving the first vertical shafts to rotate), a first polyurethane sleeve 62 fitted on the first vertical shafts and higher than the drive roller 47 (the first polyurethane sleeve 62 is close to the support beam 41), two second vertical shafts movably mounted on the mounting frame 40 and corresponding to the two first drive shafts (the second vertical shafts cannot rotate), and a second polyurethane sleeve 61 fitted on the second vertical shafts and higher than the drive roller 47. Specifically, the centering mechanism 6 also includes two sliding rails mounted on the mounting frame 40 and spaced apart, a sliding block slidably mounted on each sliding rail, a transfer base plate 63 mounted on the sliding block, a cylinder connecting frame mounted on the bottom surface of the transfer base plate 63, and a drive cylinder mounted on the mounting frame 40 and connected to the cylinder connecting frame. The second vertical shafts are mounted on the transfer base plate 63. In this embodiment, the drive cylinder and the transmission motor are preferably connected to the aforementioned PLC controller. When the sensor detects that a car wheel hub 1' is passing by, the PLC controller also sends a control signal to the drive cylinder, causing the drive cylinder to work and drive the two second polyurethane sleeves 61 to move towards the two first polyurethane sleeves 62, so that the two second polyurethane sleeves 61 and the two first polyurethane sleeves 62 cooperate to clamp the car wheel hub 1'. At the same time, the transmission motor drives the first polyurethane sleeves 62 to rotate, which in turn drives the car wheel hub 1' to rotate slightly, which facilitates the marking by the laser marking head.

[0027] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A comprehensive marking machine for automobile wheel hubs, characterized in that it include: Material conveying mechanism (4), which is used to receive automobile wheel hubs (1') and convey them downstream; A material blocking mechanism (5) is elliptically mounted on the material conveying mechanism (4) to stop the movement of the car wheel hub (1'); Centering mechanism (6), which is adjustablely mounted on the conveying mechanism (4) for clamping and adjusting the position of the car wheel hub (1'); The marking mechanism includes a support component (1), a bidirectional motion component (2), a marking moving unit (3), and a laser marking head; The support assembly (1) includes a support frame mounted on one side of the material conveying mechanism (4) and a support plate (15) mounted on the top of the support frame; the bidirectional motion assembly (2) includes a first linear motion module (21) mounted on the support plate (15), a first adapter plate (22) slidably mounted on the first linear motion module (21), a carrier frame (23) mounted on the first adapter plate (22), a second linear motion module (24) mounted on the carrier frame (23) and vertically arranged, and a second adapter plate slidably mounted on the second linear motion module (24); the marking moving unit (3) includes a receiving frame mounted on the second adapter plate, an X-axis moving assembly (33) mounted in the receiving frame, and a Z-axis moving assembly (34) mounted on the X-axis moving assembly (33) and located in the receiving frame; the laser marking head is mounted on the Z-axis moving assembly (34) and is used to cooperate with the centering mechanism (6) to mark on the circumferential surface of the car wheel hub (1').

2. The integrated marking machine for automobile wheel hubs according to claim 1, characterized in that: The support assembly (1) includes four parallel and spaced support columns (11), a connecting crossbar (13) installed at the lower part of two adjacent support columns (11), a support foot (12) installed at the bottom of each support column (11), and a reinforcing crossbar (14) installed at the upper part of two adjacent support columns (11). The support platform (15) is installed on the top of the four support columns (11) and supported on the reinforcing crossbar (14). The accommodating frame includes a vertically arranged carrier plate (32) mounted on the second adapter plate and a circumferential enclosure (31) mounted on the periphery of the carrier plate (32) and forming a ring, with an accommodating space formed between the carrier plate (32) and the circumferential enclosure (31).

3. The integrated marking machine for automobile wheel hubs according to claim 2, characterized in that: The X-axis moving assembly (33) includes a first slide rail (331) mounted on the carrier plate (32) and arranged horizontally, at least one first slider (332) slidably mounted on the first slide rail (331), a third adapter plate (333) mounted on the first slider (332), a first pulley rotatably mounted on the carrier plate (32), a first motor mounted on the outer surface of the carrier plate (32) and having a first output shaft passing through the carrier plate (32), a second pulley mounted on the first output shaft, and a first belt wound around the first pulley and the second pulley, the first belt being connected to the third adapter plate (333); The Z-axis moving assembly (34) includes a second slide rail (340) mounted on the third adapter plate (333) and vertically arranged, a second slider (341) slidably mounted on the second slide rail (340), a fourth adapter plate (342) mounted on the second slider (341), a third pulley (344) rotatably mounted on the third adapter plate (333), a second motor mounted on the inner surface of the third adapter plate (333) and with its second output shaft passing through the third adapter plate (333), a fourth pulley mounted on the second output shaft, and a second belt (343) wound around the third pulley (344) and the fourth pulley, the second belt (343) being connected to the fourth adapter plate (342).

4. The integrated marking machine for automobile wheel hubs according to claim 1, characterized in that: The material conveying mechanism (4) includes two sets of support units arranged vertically and spaced apart, two support beams (41) installed on the support units in a corresponding manner and arranged in parallel, multiple transmission rollers (47) rotatably installed on the two support beams (41) and spaced apart, at least one reinforcing rod (45) installed between the two sets of support units, a carrier frame (46) installed between the support beams (41) and the reinforcing rod (45), a drive motor installed on the carrier frame (46), a first transmission chain (49) connected to the drive motor, and multiple short transmission chains (48). Two drive gears (471) are installed at one end of each drive roller (47), and the first drive chain (49) is also connected to one of the drive gears (471) of at least one drive roller (47). Each of the short drive chains (48) is mounted on two adjacent and corresponding drive gears (471); Each set of the support units includes two support rods (42) spaced apart, a connecting crossbar (44) connecting the two adjacent support rods (42), and a second support foot (43) installed at the bottom of each support rod (42). The material conveying mechanism (4) also includes a mounting bracket (40) installed between the support beam (41) and the connecting crossbar (44) and corresponding to the marking mechanism.

5. The integrated marking machine for automobile wheel hubs according to claim 4, characterized in that: The material blocking mechanism (5) includes a cylinder (51) mounted on the mounting bracket (40), a lifting plate (52) mounted on the cylinder (51) and extending above the drive roller (47), and a buffer block (53) mounted on the lifting plate (52) to block the car wheel hub (1').

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