Automatic double-sided steel seal marking machine

Abstract

The invention relates to an automatic double-sided steel seal marking machine. The marking machine comprises a rack; the transfer bearing device is mounted on the rack, a bearing platform used for bearing a steel plate to be marked is formed on the transfer bearing device, and the transfer bearing device can drive the bearing platform to transversely reciprocate between a starting point and an ending point; the overturning and grabbing device is mounted on the rack, is used for fixing and releasing the steel plate to be marked on the bearing platform when the bearing platform moves to the end point, and can drive the steel plate to be marked to overturn when the steel plate to be marked is fixed and the bearing platform leaves the end point; and the marking device is mounted on the bearing platform and is used for stamping and marking the steel plate to be marked when the bearing platform moves to the end point every time. The device has the advantages that workpiece overturning and double-face marking are achieved near a single station, so that the process is simplified, the equipment cost is reduced, and the positioning consistency between two times of marking is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automated industrial manufacturing, and in particular to an automatic double-side steel stamp marking machine. BACKGROUND

[0002] In the field of industrial automation production, such as automobile parts manufacturing, in order to meet the demand of product information tracing, it is often necessary to apply permanent marks on both sides of a workpiece such as a steel plate. In the existing technical solutions, double-side marking is usually realized by a multi-process, multi-step process.

[0003] Specifically, the workpiece is first transported to a first station, where it is initially positioned, and then the marking device performs marking on the front side of the workpiece. After the front side marking is completed, the workpiece must be transported to the next independent process or station. At the new station, the workpiece is flipped by a flipping mechanism. The key is that after flipping, the workpiece must be precisely positioned again to determine the position of the back side mark. After this second positioning, the back side of the workpiece is marked by the marking device.

[0004] This scheme relying on two independent processes brings some obvious technical problems. First, it makes the entire automation process more complicated, occupies more production line space, and prolongs the total processing period, affecting production efficiency. Second, the system includes two independent positioning steps, which not only increases the complexity of the equipment and additional processing time, but also challenges the final marking accuracy. Since the two positions are separated, it becomes relatively difficult to ensure the relative position accuracy between the front side mark and the back side mark. This multi-station, multi-step layout also leads to an increase in the total cost of the equipment. SUMMARY

[0005] In order to realize the flipping and double-side marking of the workpiece near a single station, thereby simplifying the process, reducing the cost of the equipment, and improving the positioning consistency between the two markings, the present application provides an automatic double-side steel stamp marking machine.

[0006] The automatic double-side steel stamp marking machine provided by the present application adopts the following technical solution: An automatic double-side steel stamp marking machine, comprising: a frame; a transfer support device installed on the frame, forming a support platform for supporting a steel plate to be marked, and capable of driving the support platform to move laterally between a starting point and an ending point; a flipping and grabbing device installed on the frame, for fixing and releasing the steel plate to be marked on the support platform when the support platform moves to the ending point, and capable of driving the steel plate to be marked to flip when the steel plate to be marked is fixed and the support platform leaves the ending point; a marking device installed on the supporting platform, for stamping marking on the steel plate to be marked each time the supporting platform moves to the end point.

[0007] Optionally, the transfer supporting device comprises: a vertical plane support installed on the frame; a transfer motor installed on the frame; a gear system fixed on the vertical plane support and driven by the transfer motor to provide power in vertical and horizontal directions respectively; a first crank, a first end of which is used to receive power in horizontal direction from the gear system and rotate in horizontal plane; a second crank, a first end of which is used to receive power in vertical direction from the gear system and rotate in vertical plane; a first connecting rod, a first end of which is hinged to a second end of the first crank, and a second end of which is hinged to the supporting platform; a second connecting rod, a first end of which is hinged to a second end of the second crank, and a second end of which is hinged to the supporting platform; a first sprocket system, two sprockets of which are installed on the first end of the first crank and the first end of the first connecting rod respectively and connected by a chain; a second sprocket system, two sprockets of which are installed on the first end of the second crank and the first end of the second connecting rod respectively and connected by a chain.

[0008] Optionally, the gear system comprises: a horizontal transmission shaft, which is horizontally and rotatably installed on the vertical plane support and connected with an output shaft of the transfer motor; a vertical transmission shaft, which is vertically and rotatably installed on the vertical plane support; a first bevel gear, which is installed on a first end of the horizontal transmission shaft; a second bevel gear, which is installed on a second end of the horizontal transmission shaft; a fourth bevel gear, which is installed on a first end of the vertical transmission shaft; a fifth bevel gear, which is installed on a second end of the vertical transmission shaft; the first bevel gear and the fourth bevel gear are engaged.

[0009] Optionally, a rotating shaft is formed on the first end of the first crank as a rotating center of the first crank, a third bevel gear is coaxially arranged on the rotating shaft of the first end of the first crank, and the third bevel gear and the second bevel gear are engaged. The first end of the second crank is formed with a rotating shaft as a rotating center of the second crank, and a sixth bevel gear is coaxially arranged at the rotating shaft of the first end of the second crank, and the sixth bevel gear is engaged with the fifth bevel gear; The first sprocket system comprises a first large sprocket and a first small sprocket, the first large sprocket is coaxially fixedly arranged at the rotating shaft of the first end of the first crank, and the first small sprocket is coaxially fixedly arranged at the rotating center of the first end of the first connecting rod, and the first large sprocket and the first small sprocket are driven by a chain. The second sprocket system comprises a second large sprocket and a second small sprocket, the second large sprocket is coaxially fixedly arranged at the rotating shaft of the first end of the second crank, and the second small sprocket is coaxially fixedly arranged at the rotating center of the first end of the second connecting rod, and the second large sprocket and the second small sprocket are driven by a chain. The bottom of the supporting platform is rotationally connected with the end of the first connecting rod, the vertical side of the supporting platform is rotationally connected with the end of the second connecting rod, and the top surface of the supporting platform is horizontally arranged.

[0010] Optionally, the overturning grabbing device comprises a vertical driving mechanism mounted on the rack and used for driving a vertical sliding block to move up and down. The overturning adjusting assembly is mounted on the vertical sliding block and is formed with a rotating center, a first touch overturning point and a second touch overturning point located on the left side of the rotating center, and a third touch overturning point and a fourth touch overturning point located on the right side of the rotating center, the first touch overturning point and the second touch overturning point are above and below the rotating center, the third touch overturning point and the fourth touch overturning point are above and below the rotating center, the overturning adjusting assembly extends two touch rods which move around the rotating center, and the touch rods return to the first touch overturning point and the second touch overturning point or return to the third touch overturning point and the fourth touch overturning point in a natural state. The overturning grabbing assembly is used for connecting the steel plate to be marked on the supporting platform, grabbing and fixing the steel plate to be marked when the steel plate to be marked is inclined, and releasing the steel plate to be marked when the steel plate to be marked is restored to be horizontal. The horizontal sliding outer frame is mounted on the rack and is slidably connected with the rack in the horizontal direction, the horizontal sliding outer frame moves between a left reference position and a right reference position, the top of the horizontal sliding outer frame is formed with an opening through which the overturning adjusting assembly passes, and left and right blocking parts are formed on the two sides of the opening, and a triangular block is formed on the bottom of the horizontal sliding outer frame, the triangular block has a left inclined surface facing the left side and a right inclined surface facing the right side.

[0011] Optionally, when the overturning adjusting assembly moves upward and the horizontal sliding outer frame is located at the right reference position, after the touch rod located at the first touch overturning point touches the left blocking part, the two touch rods rotate relative to the rotating center to the third touch overturning point and the fourth touch overturning point. When the flip adjustment assembly moves downward and the lateral sliding outer frame is located at the right reference position, the touch rod located at the fourth touch flip point pushes the lateral sliding outer frame from the right reference position to the left reference position after touching the right inclined surface; When the flip adjustment assembly moves upward and the lateral sliding outer frame is located at the left reference position, the two touch rods rotate to the first touch flip point and the second touch flip point relative to the rotation center after touching the right blocking part located at the third touch flip point; When the flip adjustment assembly moves downward and the lateral sliding outer frame is located at the left reference position, the touch rod located at the second touch flip point pushes the lateral sliding outer frame from the left reference position to the right reference position after touching the left inclined surface.

[0012] Optionally, the flip adjustment assembly comprises: a central rotation shaft, which is used as the rotation center and is arranged through the vertical slider and connected with the vertical slider in rotation; a V-shaped rod, the center of which is fixedly connected with the central rotation shaft, and the two ends of the V-shaped rod are provided with the touch rods; a vertical extension support, which is arranged on the vertical slider and extends upward in the vertical direction; a reset rocker, the rotating end of which is fixedly connected with the end of the central rotation shaft away from the V-shaped rod, and the end of the reset rocker is connected with the top end of the vertical extension support through a reset spring; the reset spring enables the touch rods to return to the first touch flip point and the second touch flip point, or return to the third touch flip point and the fourth touch flip point in the natural state.

[0013] Optionally, the marking device comprises: a pre-marking support, which is provided with a marking track in the vertical direction; the supporting platform is used for placing the steel plate to be marked at the marking track; the pre-marking support is provided with a lower connecting point; a marking slider, which is installed in the marking track and connected with the marking track in sliding in the vertical direction, and one side of the marking slider is hingedly connected with a lifting rod; a post-marking support, which is located at the side of the marking slider provided with the lifting rod; a lifting motor, which is installed on the post-marking support; a rotating support plate, which is installed on the post-marking support in the horizontal direction and is driven by the lifting motor to rotate in a vertical plane; the rotating support plate is symmetrically provided with two lifting small cylinders relative to the rotation center of the lifting motor; The sleeve rod comprises a sleeve ring and an outer connecting rod which is integrally connected to the outer side of the sleeve ring and extends away from the center of the sleeve ring, and the end of the outer connecting rod away from the sleeve ring is hingedly connected to the end of the lifting rod away from the marking slider; The eccentric disc is provided with two circular-arc-shaped slits with the same radius and arranged concentrically, and two pulling small cylinders are respectively embedded in the two circular-arc-shaped slits; the eccentric disc is provided with an upper connecting point on the side away from the rotating supporting plate, and the center of the circular-arc-shaped slit does not coincide with the upper connecting point; The reset tension spring connects the upper connecting point and the lower connecting point.

[0014] In summary, the present application has at least one of the following beneficial technical effects: 1. An integrated automatic double-sided marking solution is provided. By arranging the overturning grabbing device and the marking device in the same working area, the steel plate to be marked can complete all processes such as initial positioning, front marking, unloading overturning, re-supporting and back marking near a single position after being sent to the end point by the supporting platform. Compared with the prior art which must rely on two independent stations and perform two separate positioning and marking processes, the design of the present application simplifies the overall process, reduces the number of times of transferring the workpiece between different stations, and helps to improve production efficiency. At the same time, since the device structure is more compact, the number of required stations is reduced, and the manufacturing cost is also correspondingly reduced. In addition, since the front marking and the back marking of the workpiece are both performed based on the same positioning reference, the present application improves the relative position accuracy between the front mark and the back mark, and solves the problem of difficult to ensure position consistency due to two separate positioning in the prior art; 2. The transfer supporting device of the present application uses a specific mechanical structure design of crank, connecting rod and sprocket system, and only uses one ordinary transfer motor to mechanically realize the nonlinear motion curve of the supporting platform of "gradual acceleration, gradual deceleration and short temporary stop at the end". Compared with the conventional cylinder or ordinary motor push-pull scheme (which has a rigid impact when starting and stopping), the present scheme can effectively overcome the technical difficulty of sliding of the steel plate to be marked (usually heavy, large inertia and smooth) at the moment of starting and stopping due to large inertia. This makes the present application unnecessary to add an additional magnetic attraction fixing step (avoiding the increase of cost and affecting the efficiency), and also avoids the use of expensive servo motor, avoids the use of a sledgehammer to kill a chicken, ensures the positioning accuracy while reducing the cost, improving the efficiency and reducing the impact damage to the driving motor; 3. In this application, the marking device is installed on the support platform and moves as an integral part of the platform. This ensures that the marking device and the steel plate to be marked remain in a fixed relative position during the transfer process. Only one positioning is required at the end point by the flipping and gripping device. There is no need for secondary alignment between the platform, steel plate, and marking head at the marking station, thereby reducing the number of processes and improving the marking alignment accuracy and automation efficiency. 4. The marking device of this application utilizes a reset spring to accumulate elastic potential energy when the marking slider is lifted and releases it when it falls. Combined with the gravitational potential energy of the marking slider itself, it achieves the high impact force required for steel stamp marking. The structure is simple and reliable, and avoids the use of easily damaged robotic arms (the joints of robotic arms are difficult to withstand the huge vibrations of steel stamp marking). 5. The flipping gripper of this application features high structural integration and simplified control. It employs only a single vertical drive mechanism, which, through its simple up-and-down reciprocating motion, combined with the purely mechanical interference between the flipping adjustment component, the horizontal sliding outer frame, the stop blocks, and the triangular blocks, automatically achieves multiple complex timing actions such as vertical lifting, workpiece flipping, horizontal station switching, workpiece reverse flipping, and horizontal station reset. Compared to conventional solutions that require at least three independent drive sources (such as lifting cylinders, rotary cylinders, and translation cylinders) supplemented by multiple sensors and complex PLC (Programmable Logic Controller) programming logic, this application replaces the complex electrical control timing logic with a sophisticated mechanical timing structure, significantly simplifying the control system, substantially reducing manufacturing costs and potential failure points, and improving long-term operational reliability in harsh industrial environments. 6. The marking device of this application employs a continuous transmission mechanism. The lifting motor rotates continuously and at a constant speed, driving a small lifting cylinder to slide within the arc-shaped gap of the eccentric disc. Because the rotation center of the rotating support plate does not coincide with the motion center of the eccentric disc, this continuous rotation is mechanically converted into a non-linear reciprocating motion of the eccentric disc, i.e., a gradual lifting and lowering. This reciprocating motion then drives the marking slider, enabling it to achieve a specific motion curve of first gradually lifting to accumulate force, and then rapidly releasing for marking. This design transforms the constant-speed rotational motion of the motor into a customized lifting rhythm required for marking through a purely mechanical structure, avoiding the use of expensive servo motors to program motion curves. It ensures smooth operation, reliable structure, and contributes to improving the durability and lifespan of the mechanism. Attached Figure Description

[0015] Figure 1 A schematic diagram of an automatic double-sided steel stamping and marking machine according to an embodiment of the present invention is shown. Figure 1 .

[0016] Figure 2 A schematic diagram of an automatic double-sided steel stamping and marking machine according to an embodiment of the present invention is shown. Figure 2 .

[0017] Figure 3 A schematic diagram of an automatic double-sided steel stamping and marking machine according to an embodiment of the present invention is shown. Figure 3 .

[0018] Figure 4 It is illustrated Figure 2 A magnified view of a portion of point A in the middle.

[0019] Explanation of reference numerals in the attached figures: 1. Rack; 2. Transfer and support device; 21. Vertical planar support; 22. Transfer motor; 23. Gear system; 231. Lateral drive shaft; 232. Vertical drive shaft; 233. First bevel gear; 234. Second bevel gear; 235. Third bevel gear; 236. Fourth bevel gear; 237. Fifth bevel gear; 238. Sixth bevel gear; 241. First crank; 242. Second crank; 243. First connecting rod; 244. Second connecting rod; 25. First sprocket system; 251. First large sprocket; 252. First small sprocket; 26. Second sprocket system; 261. Second large sprocket; 262. Second small sprocket; 27. Supporting platform; 3. Flipping and gripping device; 31. Vertical drive mechanism; 311. Drive cylinder; 312. Vertical track; 313. Vertical slider; 32. Flip adjustment component; 321. V-shaped rod; 3211. Contact rod; 322. Vertical extension bracket; 323. Reset rocker; 324. Reset spring; 33. Flip-grabbing component; 34. Horizontal sliding outer frame; 341. Left barrier; 342. Right barrier; 343. Triangular block; 344. Left bevel; 345. Right bevel; 4. Marking device; 41. Marking front bracket; 411. Marking track; 412. Lower connection point; 42. Marking slider; 43. Marking support; 44. Lifting motor; 45. Rotate the support plate; 451. Lift the small cylinder; 46. ​​Sleeve; 461. Sleeve ring; 462. External connecting rod; 47. Eccentric disc; 471. Arc-shaped gap; 472. Upper connection point; 48. Reset spring. Detailed Implementation

[0020] The present application will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the application and are not intended to limit the scope of the application.

[0021] In the following description, numerous specific details are set forth for purposes of explanation in order to provide a thorough understanding of the inventive concept. As part of this specification, some of the accompanying drawings of this disclosure are block diagrams illustrating structures and devices to avoid complicating the disclosed principles. For clarity, not all features of the actual embodiment need to be described. Furthermore, the language used in this disclosure has been primarily chosen for readability and instructional purposes and may not have been chosen to define or limit the subject matter of the invention, thus requiring the necessary claims to determine such inventive subject matter. References to “an embodiment” or “an embodiment” in this disclosure mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in at least one embodiment, and multiple references to “an embodiment” or “an embodiment” should not be construed as necessarily referring to the same embodiment.

[0022] Unless explicitly defined, the terms “a,” “an,” and “the” are not intended to refer to a singular entity, but rather to include a general category whose specific examples can be used for illustration. Therefore, the use of the terms “a” or “an” can mean any number of at least one, including “a,” “one or more,” “at least one,” and “one or more.” The term “or” means any of the options and any combination of the options, including all options unless explicitly indicated that the options are mutually exclusive. The phrase “at least one of” when combined with a list of items refers to a single item in the list or any combination of items in the list. The phrase does not require all items listed unless explicitly defined as such.

[0023] In automated industrial manufacturing, particularly in automotive powertrain production, it is often necessary to apply permanent markings, such as stamps, to metal components like sheet metal. These markings are essential for quality control and long-term traceability. A common method for this process is to use automated transfer devices to move the sheet metal to designated marking stations.

[0024] A significant technical challenge arises when transferring these steel plates. These plates are typically heavy, possess considerable inertia, and have smooth surfaces. When using conventional transfer devices, such as cylinders or standard motors, their start-up and stopping are often abrupt. This sudden change in speed generates strong inertial forces, easily causing the smooth steel plates to slide on the support platform 27. This sliding leads to inaccurate positioning at the marking station, resulting in a high defect rate and reduced production efficiency.

[0025] To address this slippage issue, the industry has explored various approaches. One approach is to add auxiliary clamping mechanisms, such as electromagnetic chucks, to secure the steel plate during transport. However, this introduces additional components, complex control logic, and extra clamping and releasing steps, increasing overall cycle time and cost. Another approach is to use more expensive servo motors, which can be programmed to produce smooth acceleration and deceleration curves to mitigate inertial shocks. While feasible, this solution is often too costly for simple, repetitive transport tasks, resulting in poor cost-effectiveness when applied on large-scale production lines.

[0026] The marking process itself further complicates this transfer problem. Steel stamping is a high-impact operation, requiring a robust and typically heavy marking device. In some integrated designs, to reduce alignment steps, the marking device is mounted on a support platform 27 along with the steel plate for transfer. In this case, the total mass and inertia of the moving components increase significantly. This increased combined weight exacerbates inertial slippage, placing higher demands on the transfer device and rendering simple pneumatic or electric solutions less effective. Furthermore, the high-impact vibrations generated during the marking process can damage precision or high-precision transfer components, such as robotic arms, making them unsuitable for such applications.

[0027] Therefore, refer to Figure 1 This application discloses an automatic double-sided steel stamping and marking machine, capable of reliably transporting heavy loads with high inertia, including steel plates and marking equipment, while ensuring high-precision positioning. The automatic double-sided steel stamping and marking machine includes a frame 1, a transport support device 2, a flipping gripping device 3, and a marking device 4. The transport support device 2 is mounted on the frame 1, forming a support platform 27 for supporting the steel plate to be marked, and is capable of driving the support platform 27 to move laterally back and forth between the starting point and the ending point. The flipping gripping device 3 is mounted on the frame 1, used to fix and release the steel plate to be marked on the support platform 27 when it moves to the ending point, and can drive the steel plate to be marked to flip when it is fixed and the support platform 27 leaves the ending point. The marking device 4 is mounted on the support platform 27, used to stamp and mark the steel plate to be marked each time the support platform 27 moves to the ending point.

[0028] Reference Figure 2 and Figure 4 The transfer support device 2 includes a vertical plane support 21, a transfer motor 22, a gear system 23, a first crank 241, a second crank 242, a first connecting rod 243, a second connecting rod 244, a first sprocket system 25, and a second sprocket system 26.

[0029] A vertical plane support 21 is fixedly mounted on the frame 1. A transfer motor 22 is also mounted on the frame 1, for example, fixed to the base of the frame 1. A gear system 23 is fixedly mounted on the vertical plane support 21. The gear system 23 is connected to the transfer motor 22 and serves as a power source, distributing the rotational motion of the transfer motor 22 to drive subsequent horizontal and vertical moving parts respectively.

[0030] The gear system 23 structurally includes a horizontal drive shaft 231, a vertical drive shaft 232, and a first bevel gear 233, a second bevel gear 234, a third bevel gear 235, a fourth bevel gear 236, a fifth bevel gear 237, and a sixth bevel gear 238 that mesh with it for transmission. The horizontal drive shaft 231 is arranged horizontally and rotatably mounted on a vertical plane support 21. One end of the horizontal drive shaft 231 is connected to the output shaft of the transfer motor 22. The vertical drive shaft 232 is arranged vertically and rotatably mounted on the vertical plane support 21.

[0031] The first bevel gear 233 is installed at the beginning of the transverse drive shaft 231, and the second bevel gear 234 is installed at the end of the transverse drive shaft 231. The fourth bevel gear 236 is installed at the beginning of the vertical drive shaft 232, and the fifth bevel gear 237 is installed at the end of the vertical drive shaft 232.

[0032] In terms of transmission, the axis of the transverse transmission shaft 231 is perpendicular to the axis of the vertical transmission shaft 232, and the first bevel gear 233 meshes with the fourth bevel gear 236. This meshing relationship is a beneficial design, which allows the single power of the transfer motor 22 to be transmitted to the transverse transmission shaft 231, and simultaneously transmitted to the vertical transmission shaft 232 through the 90-degree steering action of the pair of bevel gears, thus achieving power distribution.

[0033] The first end of the first crank 241 is connected to the gear system 23 for rotation in a horizontal plane. In one specific implementation, the first end of the first crank 241 forms a pivot that defines the center of rotation of the first crank 241. A third bevel gear 235 is coaxially fixed to this pivot. The third bevel gear 235 meshes with a second bevel gear 234 at the tail end of the transverse drive shaft 231. Thus, the rotation of the transverse drive shaft 231 is directly transmitted to the first crank 241 through the meshing of the second bevel gear 234 and the third bevel gear 235, driving it to perform circular motion in the horizontal plane.

[0034] The first end of the second crank 242 is connected to the gear system 23 for transmission, allowing it to rotate in a vertical plane. Similarly, the first end of the second crank 242 also forms a pivot, which defines the center of rotation of the second crank 242. The sixth bevel gear 238 is coaxially fixed to this pivot. The sixth bevel gear 238 meshes with the fifth bevel gear 237 at the tail end of the vertical drive shaft 232. In this way, the rotation of the vertical drive shaft 232 is directly transmitted to the second crank 242 through the meshing of the fifth bevel gear 237 and the sixth bevel gear 238, driving it to perform circular motion in the vertical plane.

[0035] The first connecting rod 243 is disposed between the first crank 241 and the support platform 27. The first end of the first connecting rod 243 is rotatably hinged to the rear end of the first crank 241. The rear end of the first connecting rod 243 is rotatably hinged to the support platform 27.

[0036] The second connecting rod 244 is disposed between the second crank 242 and the support platform 27. The first end of the second connecting rod 244 is rotatably hinged to the rear end of the second crank 242. The rear end of the second connecting rod 244 is also rotatably hinged to the support platform 27.

[0037] The first sprocket system 25 is used to establish a specific follower relationship between the first crank 241 and the first connecting rod 243. The first sprocket system 25 includes a first large sprocket 251 and a first small sprocket 252, which are connected by a chain drive. The first large sprocket 251 is coaxially fixed on the shaft at the beginning of the first crank 241. The first small sprocket 252 is coaxially fixed at the rotation center at the beginning of the first connecting rod 243, which is the hinge point where the first connecting rod 243 and the end of the first crank 241 are hinged.

[0038] The second sprocket system 26 is used to establish a similar follower relationship between the second crank 242 and the second connecting rod 244. The second sprocket system 26 includes a second large sprocket 261 and a second small sprocket 262, which are also connected by a chain drive. The second large sprocket 261 is coaxially fixed on the first end shaft of the second crank 242. The second small sprocket 262 is coaxially fixed at the rotation center of the first end of the second connecting rod 244, which is the hinge point where the second connecting rod 244 and the second crank 242 are hinged.

[0039] The bottom of the support platform 27 is provided with a hinge point, which is rotatably connected to the tail end of the first connecting rod 243. Another hinge point is provided on a vertical side of the support platform 27, which is rotatably connected to the tail end of the second connecting rod 244. The top surface of the support platform 27 remains horizontal.

[0040] When the entire system works in coordination, the transfer motor 22 drives the gear system 23. The gear system 23 divides the power in two, simultaneously driving the first crank 241 to rotate in the horizontal plane and the second crank 242 to rotate in the vertical plane.

[0041] The combination of the first crank 241 and the first connecting rod 243 primarily controls the horizontal reciprocating motion of the support platform 27. The combination of the second crank 242 and the second connecting rod 244 primarily controls the vertical orientation of the support platform 27. This combination has significant advantages: the presence of the first sprocket system 25 and the second sprocket system 26, through chain transmission constraints, allows the first connecting rod 243 and the second connecting rod 244 to swing in a pre-defined coordinated manner under the drive of their respective cranks. This design ensures that the top surface of the support platform 27 remains horizontal throughout the entire reciprocating motion. This ensures that the steel plate to be marked remains stable during transport and will not tilt or slip due to the geometric movement of the connecting rods, providing a stable foundation for subsequent marking processes.

[0042] Reference Figure 1 and Figure 3 The flipping gripping device 3 includes a vertical drive mechanism 31, a flipping adjustment component 32, a flipping gripping component 33, and a horizontal sliding outer frame 34.

[0043] A vertical drive mechanism 31 is mounted on the frame 1. The vertical drive mechanism 31 includes a vertical track 312, a vertical slider 313, and a drive cylinder 311. The vertical track 312 is a structural component fixedly mounted on the frame 1 and provides guidance for movement. The vertical track 312 is arranged vertically. The vertical slider 313 is slidably connected to the vertical track 312. This connection restricts the movement of the vertical slider 313, allowing it to move only in a straight line, reciprocating up and down along the axis of the vertical track 312. The drive cylinder 311 is the power source of this mechanism. In a typical configuration, the cylinder body of the drive cylinder 311 is fixedly mounted vertically on the frame 1. The end of the piston rod of the drive cylinder 311 is fixedly connected to the vertical slider 313. When the drive cylinder 311 is actuated, its piston rod extends or retracts vertically. Since the piston rod is connected to the vertical slider 313, the movement of the piston rod will directly drive the vertical slider 313 to slide up or down synchronously along the guide path of the vertical track 312.

[0044] The flip adjustment assembly 32 is mounted on the vertical slider 313 and is a mechanical assembly used to achieve a bistable reset function. Structurally, the assembly mainly includes a central pivot, a V-bar 321, a vertical extension bracket 322, a reset rocker arm 323, and a reset spring 324.

[0045] In terms of specific connection, the central pivot functions as the rotation center of the entire assembly. It passes horizontally through the vertical slider 313 and is rotatably connected to the vertical slider 313.

[0046] The center of the V-shaped rod 321 is rigidly fixed to one end of the central rotating shaft. The two ends of the V-shaped rod 321 are respectively provided with contact rods 3211, which are configured to move in an arc around the central rotating shaft together with the V-shaped rod 321.

[0047] The vertical extension bracket 322 is fixedly mounted on the vertical slider 313 and extends upward from the vertical slider 313 to provide a fixed anchor point for the return spring 324.

[0048] The rotating end of the reset rocker 323 is fixedly connected to the other end of the central rotating shaft away from the V-shaped rod 321. The end of the reset rocker 323 is connected to the top of the vertical extension bracket 322 via the reset spring 324.

[0049] This combination of the reset rocker arm 323, the reset spring 324, and the vertical extension bracket 322 forms an ingenious midpoint reset mechanism. The tension of the reset spring 324 drives the reset rocker arm 323, which in turn forces the central pivot and the V-shaped rod 321 fixed thereto to automatically return and stably remain in one of the following two preset stable positions: The first stable position is when the two touch levers 3211 are located at the first touch flip point and the second touch flip point, respectively. Both flip points are located to the left of the rotation center and are arranged one above the other in space.

[0050] The second stable position is where the two touch levers 3211 are located at the third and fourth touch flip points, respectively. Both flip points are located to the right of the rotation center, also arranged in an up-down configuration.

[0051] It is important to note that there are requirements regarding the length and elasticity of the spring. The spring needs to provide sufficient elasticity when stretched to allow the touch rod 3211 to return to the first touch flip point and the second touch flip point, or the third touch flip point and the fourth touch flip point.

[0052] The flip-grip assembly 33 is used to dock with the steel plate to be marked on the support platform 27, and to grip and fix the steel plate to be marked when it tilts, and to release the steel plate to be marked when it returns to a horizontal position. The flip-grip assembly 33 is not the focus of this application, so it is not shown in the figure. Only a cylinder is used to indicate its proper position, but any structure that can achieve the above purpose is acceptable.

[0053] For example, in one embodiment, the flip-grip assembly 33 includes a spring-loaded pin. The pin is slidably mounted on the base of the flip-grip assembly 33, with its axis aligned with a pre-drilled hole or groove in the steel plate to be marked. The pin is connected to a small gravity pendulum via a connecting rod. When the flip-grip assembly 33 is in a horizontal position, the gravity pendulum is held in a vertically downward initial position under gravity. In this position, the gravity pendulum pulls the pin via the connecting rod, overcoming the spring force, keeping the pin in a retracted, released state. At this time, the steel plate to be marked can be freely joined or removed. When the flip-grip assembly 33 tilts, the gravity pendulum deviates from its initial position due to gravity, swinging to a new position. This swinging motion releases the tension on the connecting rod, thereby releasing the constraint on the spring-loaded pin. At this instant, the compressed spring releases energy, pushing the pin to quickly extend and insert into the pre-drilled hole in the steel plate, thereby achieving the gripping and fixing of the steel plate. When the component returns to a horizontal position, the gravity pendulum will automatically swing back to its initial position, pulling the pin back again to disengage it from the pre-drilled hole, thus releasing it.

[0054] In another embodiment, the flip-grip assembly 33 includes an inclined wedge-shaped groove. This wedge-shaped groove is machined into the base of the flip-grip assembly 33, located above the surface of the steel plate to be marked. A roller and a lightweight return spring are housed within the wedge-shaped groove. When the flip-grip assembly 33 is in a horizontal position, the return spring pushes the roller to the wider end of the wedge-shaped groove. At this end, the roller does not contact the steel plate surface, or only has very little contact pressure; the assembly is in a released state, and the steel plate can be freely loaded. When the flip-grip device 3 drives the assembly to begin tilting, the steel plate to be marked, under the influence of gravity, will have a slight tendency to slide down the surface of the assembly base. This slight downward force pushes the steel plate into contact with the roller and forces the roller to move towards the narrower end of the wedge-shaped groove. Due to the angle of the wedge-shaped groove, the roller quickly engages between the angle and the steel plate surface when pushed. The greater the weight of the steel plate, the greater the wedge clamping force, thus creating a self-locking effect that firmly grips and secures the steel plate. When the assembly returns to a horizontal position, the downward trend of the steel plate disappears, and the return spring pushes the roller back to the wider end of the wedge groove, releasing the self-locking mechanism.

[0055] In another embodiment, the base of the flipping gripping assembly 33 has a cavity within which a pendulum is suspended via a pivot point. The pendulum has a low center of gravity, causing it to tend to remain vertically downward under gravity. One end of an L-shaped locking rod is hinged to the upper part of the pendulum, while the other end is hinged to a spring block for gripping a steel plate. This spring block is biased by a compression spring, tending to remain in the released position after the steel plate is released.

[0056] When the flip-grip assembly 33 is in a horizontal position, the pendulum hangs down naturally. In this posture, the L-shaped locking bar is in an initial position, the spring pressure block remains released under the action of spring force, and the assembly is in a released state.

[0057] When the tilting gripping device 3 drives the entire component to tilt, the component base rotates, but the internal pendulum, due to gravity, delays rotation or attempts to remain vertical. This results in a relative motion between the pendulum and the component base. This relative motion pushes the L-shaped locking rod, causing it to overcome the spring force and drive the spring pressure block forward to press against the steel plate to be marked, thus achieving gripping and fixing. When the component returns to a horizontal position, the pendulum also returns to its natural downward position, the L-shaped locking rod is pulled back, and the spring pressure block automatically releases under the spring force.

[0058] In another embodiment, the flip-grip assembly 33 includes one or more eccentric cams. The eccentric cam is pivotally mounted on the assembly base and its working surface is machined with serrations or knurling to provide high friction. A lightweight return spring 324 is connected to the eccentric cam, initially orienting the non-working surface of the cam towards the steel plate to be gripped. When the flip-grip assembly 33 is in a horizontal position, the return spring 324 holds the eccentric cam in a released position, allowing the steel plate to be freely loaded. As the flip-grip assembly 33 begins to tilt, the heavier steel plate, due to gravity, will exhibit a slight downward tendency along the surface of the assembly base. This small displacement causes the edge or surface of the steel plate to contact and push the eccentric cam, causing it to rotate at a small angle. Due to the eccentric shape and serrated surface of the cam, this rotation causes it to quickly wedge and lock the steel plate. A key advantage of this mechanism is that the heavier the steel plate, the greater the downward force and gravity it generates, which causes the eccentric cam to rotate more tightly, resulting in a greater wedging self-locking force. This self-locking effect provides a very reliable hold for the heavy-duty steel plate. When the assembly returns to a horizontal position, the downward force on the steel plate disappears, and the tension of the lightweight return spring 324 is sufficient to cause the eccentric cam to rotate in the opposite direction, releasing the lock and achieving release.

[0059] To enable automatic switching of workstations with flipping motion, this application also includes a horizontal sliding frame 34. This horizontal sliding frame 34 cooperates with the flipping adjustment component 32 on the vertical slider 313 to convert the up-and-down reciprocating motion of the vertical slider 313 into the horizontal reciprocating motion of the frame itself.

[0060] In terms of specific structure, the horizontal sliding outer frame 34 is installed on the frame 1 and is slidably connected to the frame 1 through guide rails or slides, so that its movement is constrained in the horizontal direction and moves between a left reference position and a right reference position.

[0061] The horizontal sliding outer frame 34 has two key interactive structures: The top interactive structure has an opening at its top, the size of which allows the vertical slider 313 and its flip adjustment assembly 32 to pass through during vertical movement. A left blocking portion 341 and a right blocking portion 342 are integrally formed or fixedly provided on the two sides of the opening, respectively.

[0062] The bottom interactive structure: A triangular block 343 is fixedly installed at its bottom. The triangular block 343 has a left bevel 344 facing left and a right bevel 345 facing right.

[0063] These two structures work in conjunction with the touch lever 3211 on the flip adjustment assembly 32 to implement a purely mechanical timing logic: Right-side station flipping: When the horizontal sliding outer frame 34 is in the right reference position, the left blocking part 341 is configured to interfere: when the flipping adjustment component 32 moves upward, the left blocking part 341 will touch the touch rod 3211 located at the first touch flipping point, forcing the V-shaped rod 321 to rotate and switch it to the second stable position (i.e. the third and fourth touch flipping points).

[0064] Switch to the left workstation: Subsequently, when the flip adjustment component 32 moves downward, the right inclined surface 345 of the triangular block 343 is configured for interference: it contacts the touch rod 3211 located at the fourth touch flip point, and through the thrust of the inclined surface, pushes the entire horizontal sliding outer frame 34 from the right reference position to the left reference position.

[0065] Left station flip: When the horizontal sliding outer frame 34 is in the left reference position, the right blocking part 342 is configured to interfere: when the flip adjustment component 32 moves upward again, the right blocking part 342 will touch the touch rod 3211 located at the third touch flip point, forcing the V-shaped rod 321 to rotate and switch it back to the first stable position (i.e. the first and second touch flip points).

[0066] Switch back to the right station: Finally, when the flip adjustment component 32 moves downward again, the left slope 344 of the triangular block 343 is configured to interfere: it contacts the touch rod 3211 located at the second touch flip point, and pushes the horizontal sliding outer frame 34 from the left reference position back to the right reference position through the thrust of the slope, completing a full cycle.

[0067] Reference Figures 1-3 The marking device 4 is installed as a whole on the support platform 27. Its function is to convert the continuous rotational motion of the lifting motor 44 into the high-speed, intermittent impact motion of the marking slider 42 to achieve steel stamp marking. The device mainly includes a front marking bracket 41, a rear marking bracket 43, a marking slider 42, a lifting motor 44, a rotating support plate 45, a sleeve rod 46, an eccentric disc 47, and a return spring 48.

[0068] In terms of specific structure, the pre-marking bracket 41 and the post-marking bracket 43 together form the fixed frame of the marking device 4.

[0069] The marking support 41 has a marking track 411 in the vertical direction. The marking slider 42 is installed in the marking track 411 and is constrained to slide vertically along the marking track 411. A lifting rod is hinged to one side of the marking slider 42 for receiving power. The marking support 41 also has a lower connection point 412 for anchoring one end of the return spring 48.

[0070] The marking support 43 is located on the side of the marking slider 42 that is hinged to the lifting rod. A lifting motor 44 is mounted on the marking support 43. A rotating support plate 45 is horizontally mounted on the marking support 43 and is driven by the lifting motor 44 to rotate in a vertical plane. Two small lifting cylinders 451 are symmetrically arranged on the rotating support plate 45, and these two small cylinders rotate together with the rotating support plate 45.

[0071] The eccentric disk 47 is the core component for achieving intermittent motion. It has two concentric arc-shaped slots 471 with the same radius. Two lifting cylinders 451 on the rotating support plate 45 are respectively embedded in these two arc-shaped slots 471.

[0072] The sleeve 46 is a connecting rod that transmits motion, comprising a collar 461 and an outer connecting rod 462. The collar 461 is rotatably fitted onto a drive pin on an eccentric disk 47. The outer connecting rod 462 is integrally connected to the outer side of the collar 461 and extends outward. The end of the outer connecting rod 462 away from the collar 461 is hinged to a lifting rod on the marking slider 42.

[0073] The return spring 48 is an energy storage component that provides impact force. An upper connection point 472 is provided on the side of the eccentric disk 47 facing away from the rotating support plate 45. The position of this upper connection point 472 does not coincide with the center of the arc-shaped gap 471, thus creating an eccentricity. The two ends of the return spring 48 are connected to the upper connection point 472 and the lower connection point 412, respectively.

[0074] These components work together to transform continuous rotation into intermittent impact: The lifting motor 44 drives the rotating support plate 45 to rotate continuously. The lifting cylinder 451 on the rotating support plate 45 acts as the driving element and slides in the arc-shaped gap 471 of the eccentric disk 47.

[0075] Since the rotation center of the rotating support plate 45 does not coincide with the geometric center (or motion center) of the eccentric disk 47, the continuous rotation of the lifting cylinder 451 will gradually push the eccentric disk 47 (as a driven member) to reciprocate or rise and fall.

[0076] The movement of the eccentric disk 47, through the sleeve rod 46 and the lifting rod, causes the marking slider 42 to gradually rise. During the lifting process, since the upper connection point 472 on the eccentric disk 47 is eccentrically set, this lifting action will also stretch the return spring 48, causing the spring to accumulate elastic potential energy.

[0077] When the geometric center of the eccentric disk 47, the upper connection point 472, and the lower connection point 412 are aligned in a straight line, the elastic potential energy accumulates to its maximum. After passing this position, the marking slider 42 is pulled downwards sharply under the combined action of its own weight and the huge pulling force of the return spring 48, causing it to accelerate downwards rapidly, thereby generating a high-speed impact on the steel plate to be marked and completing the marking action.

[0078] The implementation principle of an automatic double-sided steel stamping and marking machine according to an embodiment of this application is as follows: At the start of a work cycle, an external gripping mechanism, such as a magnetic gripper, places a steel plate to be marked onto the support platform 27 of the transfer support device 2. At this time, the support platform 27 is located at the starting point of its movement trajectory. Subsequently, the transfer motor 22 starts, and its power is distributed through the gear system 23.

[0079] Gear system 23 drives a first crank 241 rotating in the horizontal plane and a second crank 242 rotating in the vertical plane, respectively. First sprocket system 25 and second sprocket system 26 ensure that the first connecting rod 243 and second connecting rod 244 keep the supporting platform 27 horizontal throughout the movement. A significant feature of this crank-connecting rod mechanism is that it drives the supporting platform 27 in a non-linear velocity curve motion, achieving gradual acceleration and deceleration. This ensures that when the supporting platform 27 carries a heavy steel plate laterally from the starting point to the ending point, the steel plate will not slip due to sudden start-stop impacts.

[0080] When the supporting platform 27 moves smoothly to the endpoint, it accurately delivers the steel plate to the working area of ​​the flipping gripper 3. At this time, the flipping gripper component 33 on the flipping gripper 3 is activated, and it docks, positions, and connects with the steel plate to be marked, preparing for subsequent marking and flipping.

[0081] Next, the marking device 4, mounted on the support platform 27, performs the first marking. The lifting motor 44 of the marking device 4 starts and rotates continuously, driving the rotating support plate 45. The lifting cylinder 451 on the rotating support plate 45 slides in the arc-shaped gap 471 of the eccentric disc 47. This eccentric transmission gradually drives the sleeve rod 46, lifting the marking slider 42 upward. During the lifting process, the return spring 48 is stretched, accumulating a large amount of elastic potential energy. When the mechanism rotates past the highest point, the marking slider 42, under the combined action of its own weight and the strong pulling force released by the return spring 48, impacts downward at high speed, completing the stamping and marking on the front of the steel plate.

[0082] After the front marking is completed, the transfer motor 22 of the transfer support device 2 reverses or continues to run for one cycle, driving the support platform 27 (and the marking device 4 on it) to gradually decelerate and return to the starting point. This retraction action frees up the necessary movement space for the flipping gripper 3.

[0083] Subsequently, the flipping gripping device 3 performs the core flipping action. Its vertical drive mechanism 31, such as a cylinder, drives the vertical slider 313 upward. Assuming the horizontal sliding outer frame 34 is currently in its right reference position, as the vertical slider 313 rises, a contact rod 3211 of the flipping adjustment assembly 32 (V-bar 321) mounted on it will strike the stationary left stop 341 on the horizontal sliding outer frame 34. This impact force will force the V-bar 321 to rotate 180 degrees around its central axis and be locked in a second stable position by the return spring 324. Since the flipping gripping assembly 33 is connected to the vertical slider 313, this action causes the gripped steel plate to also flip 180 degrees, so that its reverse side faces outward.

[0084] After the steel plate is flipped, the transfer support device 2 is started again, and the support platform 27 (and the marking device 4 on it) moves smoothly from the starting point to the end point, coming under the flipped steel plate and providing it with a firm support.

[0085] After the support platform 27 is in place, the marking device 4 performs the second marking. Its working process is exactly the same as the first: the lifting motor 44 drives the mechanism to lift the marking slider 42 to store force, and then it falls at high speed to complete the marking on the back of the steel plate.

[0086] After the reverse side marking is completed, the vertical drive mechanism 31 drives the vertical slider 313 to move downward. At this time, the touch rod 3211 on the V-shaped rod 321, located at the fourth touch flip point, will contact the triangular block 343 at the bottom of the horizontal sliding outer frame 34. The right inclined surface 345 of the triangular block 343 will simultaneously perform two functions: first, it will trigger the flip gripping component 33 to release its positioning and gripping of the steel plate; second, the inclined surface will apply a lateral thrust to push the horizontal sliding outer frame 34 from the right reference position to the left reference position, preparing for the B-side flipping of the next work cycle.

[0087] Finally, the steel plate with double-sided marking is placed freely on the support platform 27. The transfer support device 2 drives the support platform 27 to smoothly return from the end point to the starting point. At the starting point, the external magnetic gripper removes the marked steel plate, thus completing one full work cycle.

[0088] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. An automatic double-sided steel stamping and marking machine, characterized in that, include: Rack (1); The transfer support device (2) is installed on the frame (1) and forms a support platform (27) for supporting the steel plate to be marked, and can drive the support platform (27) to move laterally back and forth between the starting point and the ending point; A flipping gripping device (3) is installed on the frame (1) for fixing and releasing the steel plate to be marked on the support platform (27) when the support platform (27) moves to the end point, and can drive the steel plate to be marked to flip when the steel plate to be marked is fixed and the support platform (27) leaves the end point; The marking device (4) is installed on the support platform (27) and is used to stamp and mark the steel plate to be marked each time the support platform (27) moves to the end point.

2. The automatic double-sided steel stamping and marking machine according to claim 1, characterized in that, The transfer support device (2) includes: A vertical planar support (21) is installed on the frame (1); A transfer motor (22) is mounted on the frame (1); The gear system (23) is fixed to the vertical plane support (21) and driven by the transfer motor (22) to provide power in the vertical and horizontal directions respectively; The first crank (241) has its head end used to receive the transverse power of the gear system (23) and rotate in the transverse plane; The second crank (242) has its head end used to receive power from the gear system (23) in the vertical direction and rotate in the vertical plane; The first link (243) has its first end hinged to the end of the first crank (241) and its end hinged to the support platform (27). The first end of the second link (244) is hinged to the end of the second crank (242), and the end of the second link (244) is hinged to the support platform (27). The first sprocket system (25) has two sprockets respectively installed at the beginning of the first crank (241) and the beginning of the first connecting rod (243) and connected by a chain; The second sprocket system (26) has two sprockets respectively mounted at the beginning of the second crank (242) and the beginning of the second connecting rod (244) and connected by a chain.

3. The automatic double-sided steel stamping and marking machine according to claim 2, characterized in that, The gear system (23) includes: A transverse drive shaft (231) is rotatably mounted on the vertical plane bracket (21) and connected to the output shaft of the transfer motor (22); A vertical drive shaft (232) is vertically and rotatably mounted on the vertical plane bracket (21). The first bevel gear (233) is mounted at the beginning of the transverse transmission shaft (231); The second bevel gear (234) is mounted at the end of the transverse drive shaft (231); A fourth bevel gear (236) is mounted at the beginning of the vertical drive shaft (232); A fifth bevel gear (237) is mounted at the end of a vertical drive shaft (232); The first bevel gear (233) and the fourth bevel gear (236) mesh.

4. The automatic double-sided steel stamping and marking machine according to claim 3, characterized in that, The first crank (241) has a shaft at its head end that serves as the rotation center of the first crank (241). A third bevel gear (235) is coaxially arranged at the shaft at the head end of the first crank (241), and the third bevel gear (235) meshes with the second bevel gear (234). The first end of the second crank (242) is formed with a shaft that serves as the rotation center of the second crank (242). A sixth bevel gear (238) is coaxially arranged at the shaft at the first end of the second crank (242), and the sixth bevel gear (238) meshes with the fifth bevel gear (237). The first sprocket system (25) includes a first large sprocket (251) and a first small sprocket (252). The first large sprocket (251) is coaxially fixedly mounted on the first crank (241) at the beginning of the shaft. The first small sprocket (252) is coaxially fixedly mounted on the first connecting rod (243) at the center of rotation. The first large sprocket (251) and the first small sprocket (252) are driven by a chain. The second sprocket system (26) includes a second large sprocket (261) and a second small sprocket (262). The second large sprocket (261) is coaxially fixedly mounted on the first end shaft of the second crank (242). The second small sprocket (262) is coaxially fixedly mounted at the rotation center of the first end of the second connecting rod (244). The second large sprocket (261) and the second small sprocket (262) are driven by a chain. The bottom of the support platform (27) is rotatably connected to the end of the first connecting rod (243), the vertical side of the support platform (27) is rotatably connected to the end of the second connecting rod (244), and the top surface of the support platform (27) is horizontally set.

5. The automatic double-sided steel stamping and marking machine according to claim 1, characterized in that, The flipping gripping device (3) includes: a vertical drive mechanism (31), mounted on the frame (1), for driving a vertical slider (313) to move up and down; The flip adjustment component (32) is installed on the vertical slider (313) and forms a rotation center, a first touch flip point and a second touch flip point located to the left of the rotation center, and a third touch flip point and a fourth touch flip point located to the right of the rotation center. The first touch flip point and the second touch flip point are one up and one down relative to the rotation center, and the third touch flip point and the fourth touch flip point are one up and one down relative to the rotation center. The flip adjustment component (32) extends two touch rods (3211) and the touch rods (3211) move around the rotation center. In its natural state, the touch rods (3211) will return to the first touch flip point and the second touch flip point, or return to the third touch flip point and the fourth touch flip point. The flip-grip component (33) is used to dock with the steel plate to be marked on the support platform (27), and to grab and fix the steel plate to be marked when it tilts, and to release the steel plate to be marked when it returns to a horizontal position. A horizontal sliding outer frame (34) is mounted on the frame (1) and is slidably connected to the frame (1) in the horizontal direction. The horizontal sliding outer frame (34) moves between the left reference position and the right reference position. An opening is formed at the top of the horizontal sliding outer frame (34) for the flip adjustment component (32) to pass through, and a left blocking part (341) and a right blocking part (342) are formed on both sides of the opening. A triangular block (343) is formed at the bottom of the horizontal sliding outer frame (34). The triangular block (343) has a left inclined surface (344) facing the left and a right inclined surface (345) facing the right.

6. The automatic double-sided steel stamping and marking machine according to claim 5, characterized in that, When the flip adjustment component (32) moves upward and the horizontal sliding outer frame (34) is located at the right reference position, after the touch rod (3211) located at the first touch flip point touches the left blocking part (341), the two touch rods (3211) rotate relative to the rotation center to the third touch flip point and the fourth touch flip point. When the flip adjustment component (32) moves downward and the horizontal sliding outer frame (34) is located at the right reference position, the touch rod (3211) located at the fourth touch flip point touches the right inclined surface (345) and pushes the horizontal sliding outer frame (34) from the right reference position to the left reference position. When the flip adjustment component (32) moves upward and the horizontal sliding outer frame (34) is located at the left reference position, after the touch rod (3211) located at the third touch flip point touches the right blocking part (342), the two touch rods (3211) rotate relative to the rotation center to the first touch flip point and the second touch flip point. When the flip adjustment component (32) moves downward and the horizontal sliding outer frame (34) is located at the left reference position, the touch rod (3211) located at the second touch flip point touches the left inclined surface (344) and pushes the horizontal sliding outer frame (34) from the left reference position to the right reference position.

7. The automatic double-sided steel stamping and marking machine according to claim 5, characterized in that, The flip adjustment component (32) includes: A central rotating shaft, which serves as the rotation center, passes through the vertical slider (313) and is rotatably connected to the vertical slider (313); V-shaped rod (321), the center of which is fixedly connected to the central rotating shaft, and the two ends of the V-shaped rod (321) are provided with the touch rod (3211). A vertical extension bracket (322) is disposed on the vertical slider (313) and extends vertically upward; A reset rocker arm (323) is provided, with its rotating end fixedly connected to the end of the central rotating shaft away from the V-shaped rod (321). The end of the reset rocker arm (323) is connected to the top of the vertical extension bracket (322) via a reset spring (324). The reset spring (324) causes the touch rod (3211) to return to the first touch flip point and the second touch flip point, or to the third touch flip point and the fourth touch flip point in its natural state.

8. The automatic double-sided steel stamping and marking machine according to claim 1, characterized in that, The marking device (4) includes: A marking support (41) is provided with a marking track (411) in the vertical direction; a support platform (27) is used to place the steel plate to be marked at the marking track (411); and a lower connection point (412) is provided on the marking support (41). A marking slider (42) is installed in the marking track (411) and is slidably connected to the marking track (411) in the vertical direction. A lifting rod is hinged to one side of the marking slider (42). The marking support (43) is located on the side of the marking slider (42) where the lifting rod is provided; A lifting motor (44) is mounted on the marking support (43); Rotary support plate (45) is horizontally mounted on the marking support bracket (43) and driven by the lifting motor (44) to rotate in a vertical plane; two lifting cylinders (451) are symmetrically arranged on the rotating support plate (45) with respect to the rotation center of the lifting motor (44). Sleeve rod (46), the sleeve rod (46) includes a collar (461) and an outer connecting rod (462), the outer connecting rod (462) is integrally connected to the outer side of the collar (461) and extends in a direction away from the center of the collar (461), and the end of the outer connecting rod (462) away from the collar (461) is hinged to the end of the lifting rod away from the marking slider (42); An eccentric disc (47) is provided with two concentric arc-shaped slits (471) with the same radius. Two lifting cylinders (451) are respectively embedded in the two arc-shaped slits (471). An upper connection point (472) is provided on the side of the eccentric disc (47) away from the rotating support plate (45). The center of the upper connection point (472) does not coincide with the center of the arc-shaped slits (471). A reset spring (48) connects the upper connection point (472) and the lower connection point (412).

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