Automatic laser marking device for engine valve guide

Abstract

The application discloses an automatic laser marking and marking equipment for engine valve guide pipes, which comprises a fixed base and a laser device, the laser device is movably arranged above the fixed base, a galvanometer is arranged on the lower end outer surface of the laser device, a guide pipe conveying belt for conveying the valve guide pipes is movably arranged on the inner side of the upper end of the fixed base, a plurality of groups of arc-shaped grooves are arranged on the outer surface of the guide pipe conveying belt, magnetic pads are fixedly arranged on the inner side of the arc-shaped grooves, deviation correctors are fixedly arranged on the outer surface of the upper end of the fixed base and located on both sides of the guide pipe conveying belt, and an electric push rod is movably arranged at the middle position of one end of the deviation corrector.

Description

Technical Field

[0001] This invention belongs to the field of engine-related technology, and more specifically, it relates to an automatic laser marking device for engine valve guides. Background Technology

[0002] Valve guides are guiding devices for the valves of an automobile engine. They guide the valves and transfer heat from the valve stem to the cylinder head. Valve guides manufactured by different manufacturers have different markings. This laser marking equipment is a device for laser marking valve guides.

[0003] Patent document CN113199154A discloses a large-format laser marking machine, including a worktable, an X-axis module mounted on the worktable, a Z-axis module mounted on the X-axis module, a Y-axis module mounted on the Z-axis module, a scanning head mounted on the Y-axis module, and a display, control module, and control switches mounted on the worktable. The worktable has multiple feet at its bottom, and a shock-resistant support connects the worktable to the feet. The shock-resistant support includes a lower support fixedly connected to the feet, an upper support fixedly connected to the worktable, and two shock-absorbing blocks fixedly mounted on the top of the lower support. This design features stable operation and accurate results.

[0004] The aforementioned laser marking equipment has certain shortcomings in use. It is primarily designed for marking planar structures, where the two ends of the object being marked are flat and difficult to move. Since valve guides are cylindrical and hollow, they require clamps for fixation during marking, preventing continuous marking and feeding. Repeated marking necessitates repeated clamping and disassembly of the valve guide, reducing laser marking efficiency. Furthermore, after marking, the valve guide must be manually removed by the user; it cannot be automatically removed from cylindrical valve guides, limiting its functionality. Additionally, traditional laser marking equipment lacks an auxiliary correction structure, making cylindrical valve guides prone to tilting and shifting during movement. This results in markings that are not correctly placed, leading to tilted or incomplete markings and reducing the marking accuracy of automatic laser marking equipment. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic laser marking device for engine valve guides, which can solve existing problems.

[0006] The problem solved by this invention is:

[0007] 1. Traditional equipment is mostly used for marking operations on planar structures. The two ends of the object to be marked are planar structures, which are not easy to move. However, the valve guide is a cylindrical hollow structure, which requires it to be fixed by a clamp during marking. It is impossible to continuously mark and feed the material. When marking repeatedly, the valve guide needs to be installed and removed repeatedly using the clamp, which reduces its laser marking efficiency.

[0008] 2. At the same time, after the valve guide is marked, the user needs to manually remove the marked valve guide. It cannot automatically remove valve guides with cylindrical structures, and its functionality is limited.

[0009] 3. Traditional laser marking equipment does not have an auxiliary correction structure. The valve guide with the column structure is prone to tilting and displacement when moving, which makes it impossible for the mark to be correctly marked in the corresponding position. This results in the surface mark being tilted or incomplete, reducing the marking accuracy of the automatic laser marking equipment.

[0010] The objective of this invention can be achieved through the following technical solutions:

[0011] An automatic laser marking device for engine valve guides includes a fixed base and a laser. The laser is movably mounted above the fixed base. A galvanometer is provided on the lower outer surface of the laser. A valve guide conveyor belt for conveying valve guides is movably mounted on the upper inner side of the fixed base. The outer surface of the valve guide conveyor belt has several sets of arc-shaped grooves. Magnetic pads are fixedly installed on the inner side of the arc-shaped grooves. A guide device is fixedly mounted on both sides of the guide guide conveyor belt on the upper outer surface of the fixed base. An electric actuator is movably mounted at the middle of one end of the guide device. A collection box for collecting valve guides is provided below the valve guide conveyor belt, and two sets of arc-shaped baffles for separating valve guides are movably mounted on the inner side of the collection box.

[0012] As a further technical solution of the present invention, several sets of arc-shaped grooves are arranged side by side, and rotating rods are sleeved at both ends of the duct conveyor belt. The outer surface of the magnetic pad is an arc-shaped structure. The valve guide itself is small in volume and is a metallic cylindrical structure. The valve guide has a high working temperature and is made of cast iron or iron-based powder metallurgy with high graphite content, so that it can be attracted by magnetic materials. Its small volume is not convenient for automatic feeding. By setting the arc-shaped grooves, several sets of valve guides can be placed on the duct conveyor belt. The valve guides are fixed by magnetic pad adsorption, avoiding shaking when moving and improving the stability during laser engraving operation.

[0013] As a further technical solution of the present invention, a third motor for driving the rotating rod is provided at the lower part of the duct conveyor belt. The third motor and the rotating rod are connected by belt transmission. The user starts the third motor, which drives the rotating rod to rotate by the belt. The rotating rod drives the duct conveyor belt, causing the air valve guide on the duct conveyor belt to move. When the air valve guide moves to the lower part of the laser, the laser is used to perform laser marking operation on it.

[0014] As a further technical solution of the present invention, a discharge pipe is fixedly installed on the lower outer surface of the receiving hopper, and a receiving box for use with the discharge pipe is fixedly installed on the inner side of the fixed base. After the valve guide on the guide conveyor belt completes the laser marking operation, the valve guide is transported to the inner side of the fixed base by the movement of the guide conveyor belt. When the valve guide moves, its two ends contact the arc-shaped stop bar of the receiving hopper. The arc-shaped stop bar separates the valve guide from the magnetic pad, causing the valve guide to fall into the receiving hopper and be discharged through the discharge pipe of the receiving hopper. The receiving box is used to collect the discharged engine valve guide.

[0015] As a further technical solution of the present invention, a sliding retaining strip is fixedly installed on the inner side of the receiving hopper to cooperate with the arc-shaped stop bar. The sliding retaining strip and the lower end of the arc-shaped stop bar are movably connected by a slider. Different specifications of engine valve guides have different lengths. By adjusting the position between the two arc-shaped stop bars, the two arc-shaped stop bars can be used for valve guides of different lengths. Pulling the arc-shaped stop bar causes the slider of the arc-shaped stop bar to move inside the sliding retaining strip, thereby adjusting the distance between the two arc-shaped stop bars so that the two arc-shaped stop bars and the two ends of the engine valve guide are in contact.

[0016] As a further technical solution of the present invention, a material drop trough is provided in the middle of the inner side of the receiving hopper, and buffer pads are fixedly installed on both sides of the material drop trough. The upper part of the buffer pad is inclined. The buffer pad can reduce the vibration and noise generated by the valve guide, so that the valve guide slides down into the material drop trough through the inclined buffer pad and is discharged.

[0017] As a further technical solution of the present invention, both sides of the receiving hopper are provided with docking rods for fixing, the inner side of the slider is movably mounted with rollers, and one end of the arc-shaped stop is movably mounted with a roller. By using the roller, the valve guide can slide down along one side of the arc-shaped stop, reducing its resistance. At the same time, the rollers make the movement of the slider smoother.

[0018] As a further technical solution of the present invention, a drive seat is provided at the middle of the other end of the corrector, and two sets of fixed insert plates are fixedly installed on the outer surface of the lower end of the corrector. A wire harness connector is provided at the middle of the lower end of the corrector. After the wire harness connector is connected to power, the corrector as a whole is powered on. The sensor determines the movement position of the valve guide. When the valve guide moves between the two sets of correctors, the guide conveyor belt stops running. The two sets of correctors adjust the mark position of the valve guide. The electric push rod of the corrector pushes one end of the valve guide, so that the valve guide makes a corresponding position adjustment. The setting of two sets of correctors allows the valve guide to be arbitrarily adjusted to both ends according to the mark position.

[0019] As a further technical solution of the present invention, the upper end of the fixed base is provided with a lifting frame, one end of the lifting frame is movably mounted with a movable push rod, the lifting frame is provided with a first lead screw for driving the movable push rod to move up and down, the upper end of the lifting frame is provided with a first motor, starting the first motor causes the first lead screw to rotate, and the first lead screw drives the movable push rod to move up and down, thereby adjusting the operating height of the laser.

[0020] As a further technical solution of the present invention, one end of the movable push rod is provided with a threaded sleeve, the inner side of the movable push rod is provided with a second lead screw that cooperates with the threaded sleeve, one end of the movable push rod is provided with a second motor, the lower end of the laser is provided with a galvanometer, the lower end of the galvanometer is provided with a field lens, and sensors for determining the position of the valve guide are provided on both sides of the galvanometer. The galvanometer and one end of the threaded sleeve are fixed together, and four limiting rods are sleeved between the galvanometer and the movable push rod.

[0021] The beneficial effects of this invention are:

[0022] 1. By incorporating magnetic pads and arc-shaped grooves, this automatic laser marking equipment enables the automatic conveying of valve guides, eliminating the need for traditional clamps to install and remove them. This improves the continuity of the laser marking operation. During operation, the valve guides, being small in size and having a metallic cylindrical structure, operate at high temperatures. Made of cast iron or iron-based powder metallurgy with a high graphite content, they are magnetically attracted. Their small size makes automatic feeding difficult. The arc-shaped grooves allow several sets of valve guides to be placed on the conveyor belt, while the magnetic pads hold them in place, preventing wobbling during movement and improving stability during laser marking. The user activates a third motor, which drives a rotating rod via a belt, which in turn drives the conveyor belt. The machine rotates, causing the valve guide on the duct conveyor belt to move. When the valve guide moves to the lower part of the laser, the sensor determines its position and activates the laser to perform laser marking. Simultaneously, the user starts the first motor, which drives the first lead screw to rotate. The first lead screw drives the moving push rod up and down, adjusting the operating height of the laser. Then, the user starts the second motor, which drives the second lead screw to rotate. The second lead screw pushes the threaded sleeve to move. Four limit rods fix the laser to prevent it from rotating. The threaded sleeve adjusts the position of the laser as it moves, and a galvanometer moves the laser beam. After the valve guide is marked, it is removed by the duct conveyor belt. This automatic laser marking equipment can automatically load and unload valve guides, simplifying the valve guide installation and fixing process and improving marking efficiency.

[0023] 2. By setting up a receiving hopper and an arc-shaped stop, this automatic laser marking and marking equipment can automatically collect valve guides. Combined with the use of a guide conveyor belt, it eliminates the need for manual collection. During operation, after the valve guide on the guide conveyor belt completes the laser marking, the conveyor belt moves to the inside of the fixed base. As the valve guide moves, its two ends contact the arc-shaped stop of the receiving hopper. The arc-shaped stop separates the valve guide from the magnetic pad, causing it to fall into the receiving hopper. The discharge pipe discharges the engine valve guides, which are then collected by a receiving box. Since different specifications of engine valve guides have different lengths, the position of the two arc-shaped baffles is adjusted to accommodate valve guides of varying lengths. Pulling the arc-shaped baffles causes their sliders to move inside the sliding clips, thus adjusting the distance between the two baffles. This ensures that the two baffles contact both ends of the engine valve guides, separating them as they move. This automatic material handling enhances the equipment's functionality.

[0024] 3. By setting up a correction device, the marking position of the valve guide can be corrected in a timely manner when the automatic laser marking equipment for the engine valve guide is used, avoiding deviation during marking. During operation, when the valve guide moves between the two sets of correction devices, the sensor detects the position of the valve guide, causing the guide conveyor belt to stop running. The marking position of the valve guide is adjusted by the two sets of correction devices. The electric push rod of the correction device pushes one end of the valve guide, so that the valve guide makes corresponding position adjustments. The setting of two sets of correction devices allows the valve guide to be adjusted arbitrarily at both ends according to the marking position, thereby optimizing the use of the guide conveyor belt, giving it a marking correction structure, and improving its marking accuracy. Attached Figure Description

[0025] The invention will now be further described with reference to the accompanying drawings.

[0026] Figure 1 This is a schematic diagram of the overall structure of the automatic laser marking device for engine valve guides of the present invention;

[0027] Figure 2 This is a plan view of the guide conveyor belt in the automatic laser marking and marking equipment for engine valve guides of the present invention;

[0028] Figure 3 This is an overall view of the receiving hopper in the automatic laser marking and marking equipment for engine valve guides of the present invention;

[0029] Figure 4 It is the entirety of the correction device in the automatic laser marking and marking equipment for engine valve guides of the present invention;

[0030] Figure 5 This is an overall structural diagram of the movable push rod in the automatic laser marking and marking device for engine valve guides of the present invention;

[0031] Figure 6 This is an overall structural diagram of the arc-shaped stop bar in the automatic laser marking and marking device for engine valve guides of the present invention.

[0032] In the diagram: 1. Receiving box; 2. Discharge pipe; 3. Fixed base; 4. Conveyor belt; 5. First lead screw; 6. Lifting frame; 7. First motor; 8. Moving push rod; 9. Laser; 10. Galvanometer; 11. Field lens; 12. Deviation corrector; 13. Magnetic pad; 14. Receiving hopper; 15. Third motor; 16. Rotating rod; 17. Arc-shaped groove; 18. Belt; 19. Connecting rod; 20. Arc-shaped stop bar; 21. Sliding clip; 22. Drop chute; 23. Buffer pad; 24. Electric push rod; 25. Drive seat; 26. Fixed insert plate; 27. Wire harness connector; 28. Second motor; 29. ​​Second lead screw; 30. Limiting rod; 31. Threaded sleeve; 32. Roller; 33. Slider; 34. Roller. Detailed Implementation

[0033] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0034] like Figure 1-6 As shown, the automatic laser marking device for engine valve guides includes a fixed base 3 and a laser 9. The laser 9 is movably mounted above the fixed base 3. A galvanometer 10 is provided on the lower outer surface of the laser 9. A valve guide conveyor belt 4 for conveying valve guides is movably mounted on the upper inner side of the fixed base 3. The outer surface of the valve guide conveyor belt 4 is provided with several sets of arc-shaped grooves 17. A magnetic pad 13 is fixedly mounted on the inner side of the arc-shaped grooves 17. A guide device 12 is fixedly mounted on both sides of the upper outer surface of the fixed base 3. An electric push rod 24 is movably mounted at the middle of one end of the guide device 12. A collection box 1 for collecting valve guides is provided below the valve guide conveyor belt 4. Two sets of arc-shaped baffles 20 for separating valve guides are movably mounted on the inner side of the collection box 1. A collection hopper 14 is provided at the lower part of the valve guide conveyor belt 4.

[0035] Several sets of arc-shaped grooves 17 are arranged side by side. Rotating rods 16 are sleeved at both ends of the duct conveyor belt 4. The outer surface of the magnetic pad 13 has an arc-shaped structure. The valve guide itself is small in volume and has a metallic cylindrical structure. The valve guide has a high working temperature and is made of cast iron or iron-based powder metallurgy with a high graphite content, which allows it to be attracted by magnetic materials. Its small volume is not convenient for automatic feeding. By setting the arc-shaped grooves 17, several sets of valve guides can be placed on the duct conveyor belt 4. The valve guides are attracted and fixed by the magnetic pad 13 to avoid shaking when moving and improve the stability of its laser engraving operation.

[0036] The lower part of the duct conveyor belt 4 is equipped with a third motor 15 for driving the rotating rod 16. The third motor 15 and the rotating rod 16 are driven by a belt 18. The user starts the third motor 15, which drives the rotating rod 16 to rotate via the belt 18. The rotating rod 16 drives the duct conveyor belt 4, causing the air valve guide on the duct conveyor belt 4 to move. When the air valve guide moves to the lower part of the laser 9, the laser 9 performs laser marking on it.

[0037] A discharge pipe 2 is fixedly installed on the lower outer surface of the receiving hopper 14, and a receiving box 1 for use with the discharge pipe 2 is fixedly installed on the inner side of the fixed base 3. After the valve guide on the guide conveyor belt 4 completes the laser marking operation, the valve guide is transported to the inner side of the fixed base 3 by the movement of the guide conveyor belt 4. When the valve guide moves, its two ends contact the arc-shaped stop bar 20 of the receiving hopper 14. The arc-shaped stop bar 20 separates the valve guide from the magnetic pad 13, causing the valve guide to fall into the receiving hopper 14 and be discharged through the discharge pipe 2 of the receiving hopper 14. The receiving box 1 is used to collect the discharged engine valve guide.

[0038] A sliding retaining strip 21 is fixedly installed on the inner side of the receiving hopper 14 to cooperate with the arc-shaped stop bar 20. The sliding retaining strip 21 and the lower end of the arc-shaped stop bar 20 are movably connected by a slider 33. Different specifications of engine valve guides have different lengths. By adjusting the position between the two arc-shaped stop bars 20, the two arc-shaped stop bars 20 can be used for valve guides of different lengths. Pulling the arc-shaped stop bar 20 causes the slider 33 of the arc-shaped stop bar 20 to move inside the sliding retaining strip 21, thereby adjusting the distance between the two arc-shaped stop bars 20 so that the two arc-shaped stop bars 20 and the two ends of the engine valve guide are in contact.

[0039] A material discharge chute 22 is provided in the middle of the inner side of the receiving hopper 14, and buffer pads 23 are fixedly installed on both sides of the material discharge chute 22. The upper part of the buffer pads 23 is inclined. The buffer pads 23 can reduce the vibration and noise generated by the valve guide, so that the valve guide slides through the inclined buffer pads 23 and is discharged into the material discharge chute 22.

[0040] Both sides of the receiving hopper 14 are provided with docking rods 19 for fixing. Rollers 34 are movably installed on the inner side of the slider 33. A roller 32 is movably installed on one end of the arc-shaped baffle 20. The roller 32 allows the valve guide to slide down along one side of the arc-shaped baffle 20, reducing its resistance. At the same time, the roller 34 makes the movement of the slider 33 smoother.

[0041] A drive seat 25 is provided at the middle of the other end of the guide device 12. Two sets of fixed insert plates 26 are fixedly installed on the lower outer surface of the guide device 12. A wire harness connector 27 is provided at the middle of the lower end of the guide device 12. After the wire harness connector 27 is connected to the power, the guide device 12 is powered on as a whole. The sensor determines the movement position of the valve guide. When the valve guide moves between the two sets of guide devices 12, the guide conveyor belt 4 stops running. The mark position of the valve guide is adjusted by the two sets of guide devices 12. The electric push rod 24 of the guide device 12 pushes one end of the valve guide, so that the valve guide makes corresponding position adjustment. The setting of the two sets of guide devices 12 allows the valve guide to be adjusted arbitrarily to both ends according to the mark position.

[0042] The upper end of the fixed base 3 is provided with a lifting frame 6. A movable push rod 8 is movably installed at one end of the lifting frame 6. The lifting frame 6 is provided with a first lead screw 5 for driving the movable push rod 8 to move up and down. The upper end of the lifting frame 6 is provided with a first motor 7. When the first motor 7 is started, the first motor 7 drives the first lead screw 5 to rotate, and the first lead screw 5 drives the movable push rod 8 to move up and down, thereby adjusting the operating height of the laser 9.

[0043] One end of the movable push rod 8 is provided with a threaded sleeve 31. The inner side of the movable push rod 8 is provided with a second lead screw 29 that works with the threaded sleeve 31. One end of the movable push rod 8 is provided with a second motor 28. The lower end of the laser 9 is provided with a galvanometer 10. The lower end of the galvanometer 10 is provided with a field lens 11. Sensors for determining the position of the valve guide are provided on both sides of the galvanometer 10. The galvanometer 10 and one end of the threaded sleeve 31 are fixed together. Four limiting rods 30 are sleeved between the galvanometer 10 and the movable push rod 8.

[0044] This automatic laser marking device for engine valve guides, by incorporating magnetic pads 13 and arc-shaped grooves 17, enables automatic conveying of valve guides, eliminating the need for traditional clamps for valve guide installation and removal. This improves the continuity of the laser marking operation. During operation, the valve guides, being small in size and having a metallic cylindrical structure, operate at high temperatures. Made of cast iron or iron-based powder metallurgy with a high graphite content, they are magnetically attracted. Their small size makes automatic feeding difficult; the arc-shaped grooves 17 allow several sets of valve guides to be placed on the conveyor belt 4. The magnetic pads 13 hold the valve guides in place, preventing wobbling during movement and improving stability during laser marking. The user activates the third motor 15, which drives the rotating rod 16 via belt 18, thus driving the valve guide conveyor belt. The conveyor belt 4 rotates, causing the valve guide on the guide tube to move. When the valve guide moves to the lower part of the laser 9, the sensor determines its position and starts the laser 9 to perform laser marking. At the same time, the user starts the first motor 7, which drives the first lead screw 5 to rotate. The first lead screw 5 drives the moving push rod 8 to move up and down, which can adjust the working height of the laser 9. Then, the user starts the second motor 28, which drives the second lead screw 29 to rotate. The second lead screw 29 pushes the threaded sleeve 31 to move. The four limit rods 30 fix the laser 9 to prevent it from rotating. The threaded sleeve 31 adjusts the position of the laser 9 while moving. The galvanometer 10 moves the laser beam. After the valve guide is marked, it is removed by the guide tube conveyor belt 4. This automatic laser marking equipment can complete the automatic loading and unloading of valve guides, simplifying the valve guide installation and fixing steps and improving its marking efficiency.

[0045] By setting up a receiving hopper 14 and an arc-shaped stop bar 20, the automatic laser marking equipment can automatically collect valve guides during use. Combined with the use of the guide conveyor belt 4, this eliminates the need for manual collection. During operation, after the valve guide on the guide conveyor belt 4 completes the laser marking operation, the movement of the guide conveyor belt 4 transports the valve guide to the inside of the fixed base 3. As the valve guide moves, both ends contact the arc-shaped stop bar 20 of the receiving hopper 14. The arc-shaped stop bar 20 separates the valve guide from the magnetic pad 13, causing the valve guide to fall into the receiving hopper 14. The discharge pipe 2 discharges the engine valve guide, which is collected by the receiving box 1. Since the engine valve guides of different specifications have different lengths, the position between the two arc-shaped baffles 20 is adjusted so that the two arc-shaped baffles 20 can be used for valve guides of different lengths. Pulling the arc-shaped baffles 20 causes the slider 33 of the arc-shaped baffles 20 to move inside the sliding clip 21, thereby adjusting the distance between the two arc-shaped baffles 20 so that the two arc-shaped baffles 20 and the two ends of the engine valve guides come into contact. When they move, the valve guides are separated, giving the equipment automatic material handling and improving its functionality.

[0046] By setting up the correction device 12, the marking position of the valve guide can be corrected in time when the automatic laser marking device for the engine valve guide is used, so as to avoid the deviation during marking. During operation, when the valve guide moves between the two sets of correction devices 12, the position of the valve guide is detected by the sensor, and the guide conveyor belt 4 is stopped. The marking position of the valve guide is adjusted by the two sets of correction devices 12. The electric push rod 24 of the correction device 12 pushes one end of the valve guide, so that the valve guide makes corresponding position adjustment. The setting of the two sets of correction devices 12 allows the valve guide to be adjusted arbitrarily to both ends according to the marking position, thereby optimizing the use of the guide conveyor belt 4, giving it a marking correction structure and improving its marking accuracy.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An automatic laser marking device for engine valve guides, comprising a fixed base (3) and a laser (9), wherein the laser (9) is movably mounted above the fixed base (3), and a galvanometer (10) is provided on the lower outer surface of the laser (9), characterized in that, The upper inner side of the fixed base (3) is movably installed with a duct conveyor belt (4) for conveying valve guides. The lower part of the duct conveyor belt (4) is provided with a collection hopper (14). The outer surface of the duct conveyor belt (4) is provided with several sets of arc-shaped grooves (17). The inner side of the arc-shaped grooves (17) is fixedly installed with magnetic pads (13). The upper outer surface of the fixed base (3) is fixedly installed with guide devices (12) on both sides of the duct conveyor belt (4). The middle part of one end of the guide device (12) is movably installed with an electric push rod (24). The lower part of the duct conveyor belt (4) is provided with a collection box (1) for collecting valve guides. The inner side of the collection box (1) is movably installed with two sets of arc-shaped baffles (20) for separating valve guides. The inner side of the receiving hopper (14) is fixedly installed with a sliding clip (21) for use with the arc-shaped stop bar (20), and the lower end of the sliding clip (21) and the arc-shaped stop bar (20) are movably connected by a slider (33); The receiving hopper (14) has a material drop trough (22) in the middle of its inner side, and buffer pads (23) are fixedly installed on both sides of the material drop trough (22). The upper part of the buffer pads (23) is inclined. Both sides of the receiving hopper (14) are provided with docking rods (19) for fixing, the inner side of the slider (33) is movably installed with rollers (34), and one end of the arc-shaped stop bar (20) is movably installed with a roller (32).

2. The automatic laser marking equipment for engine valve guides according to claim 1, characterized in that, Several sets of arc-shaped grooves (17) are arranged side by side, and rotating rods (16) are sleeved at both ends of the conduit conveyor belt (4). The outer surface of the magnetic pad (13) is an arc-shaped structure.

3. The automatic laser marking equipment for engine valve guides according to claim 2, characterized in that, The lower part of the conduit conveyor belt (4) is provided with a third motor (15) for driving the rotating rod (16), and the third motor (15) and the rotating rod (16) are driven by a belt (18).

4. The automatic laser marking equipment for engine valve guides according to claim 1, characterized in that, The lower outer surface of the receiving hopper (14) is fixedly installed with a discharge pipe (2), and the inner side of the fixed base (3) is fixedly installed with a receiving box (1) that works with the discharge pipe (2).

5. The automatic laser marking equipment for engine valve guides according to claim 1, characterized in that, The other end of the correction device (12) is provided with a drive seat (25), and two sets of fixing plates (26) are fixedly installed on the lower outer surface of the correction device (12). The lower end of the correction device (12) is provided with a wire harness connector (27).

6. The automatic laser marking equipment for engine valve guides according to claim 1, characterized in that, The upper end of the fixed base (3) is provided with a lifting frame (6), and a movable push rod (8) is movably installed at one end of the lifting frame (6). The lifting frame (6) is provided with a first lead screw (5) for driving the movable push rod (8) to move up and down. The upper end of the lifting frame (6) is provided with a first motor (7).

7. The automatic laser marking equipment for engine valve guides according to claim 6, characterized in that, One end of the movable push rod (8) is provided with a threaded sleeve (31), and the inner side of the movable push rod (8) is provided with a second lead screw (29) that works with the threaded sleeve (31). One end of the movable push rod (8) is provided with a second motor (28). The lower end of the laser (9) is provided with a galvanometer (10), and the lower end of the galvanometer (10) is provided with a field lens (11). Both sides of the galvanometer (10) are provided with sensors for determining the position of the valve guide. One end of the galvanometer (10) and the threaded sleeve (31) are fixed together. Four limiting rods (30) are sleeved between the galvanometer (10) and the movable push rod (8).

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