A laser marking robot for automotive mufflers

Abstract

The present invention relates to the technical field of marking robots, and specifically discloses a laser marking robot for automobile mufflers, which includes a body and two symmetrically arranged support plates fixedly installed inside the body front and back. A conveyor belt for conveying mufflers is arranged between the two support plates. A sliding table unit is arranged inside the body. A marking device and two symmetrically arranged L-shaped frames are fixedly installed on the sliding table unit. Positioning units are arranged on the two L-shaped frames, and clamping and fixing units are arranged on the positioning units. Before and after marking, the top of the muffler is scraped twice by a scraping assembly for decontamination operations, effectively removing the welding residues and marking residues on the top of the muffler, providing a clean and interference-free surface for laser marking, ensuring the clarity and accuracy of the marking lines, reducing the damage of impurities to the marking device, and prolonging the service life of the marking device.

Description

Technical Field

[0001] The present invention relates to the technical field of marking robots, and more specifically, it relates to a laser marking robot for automobile mufflers. Background Art

[0002] An automobile muffler, also known as an automobile silencer, is an important component in an automobile exhaust system. Its main function is to reduce the noise generated when the motor vehicle engine operates, and to avoid the impact of noise on the driver, passengers and the surrounding environment.

[0003] The production process of automobile mufflers generally includes: raw material preparation, stamping, welding and assembly, laser marking, and finished product inspection. Among them, laser marking is an important process in the production of automobile mufflers, mainly used to mark product numbers, production dates, manufacturer information, etc. on the mufflers. Currently, for the laser marking of automobile mufflers, specifically, the welded muffler is fixed on the workbench through a fixture, and then the marking operation is carried out by a marking device. However, there are still certain defects in the current marking process:

[0004] Currently, during the production of automobile mufflers, a separate decontamination component is set between the welding process and the marking process to remove welding residues, ensuring the marking quality. At the same time, a separate decontamination component is also set between the marking process and the finished product inspection process to improve the appearance quality of the finished product.

[0005] However, firstly, adding an independent decontamination step means extending the overall production cycle. At the same time, since the decontamination speed is faster than the marking speed, that is, whenever a muffler is decontaminated, it needs to wait for the ongoing marking operation to be completed before entering the marking process. Similarly, after a marked muffler is sent to the next decontamination component for decontamination, the muffler being marked has not yet completed the marking operation. This will cause workpiece accumulation to gradually occur between the decontamination component between the welding process and the marking process and the marking process during the long-term production process. And the decontamination component between the marking process and the finished product inspection process will be idle for a period of time during the marking process of the muffler, causing congestion in the production line, reducing the utilization rate of the equipment, and increasing the overall production cycle. Although such frequency asynchrony can be alleviated to a certain extent by appropriately increasing the marking speed to shorten the time of the marking link in actual production, the increase in the marking speed will also sacrifice the marking quality and effect to a certain extent. Secondly, setting a separate decontamination component also means an increase in the production investment cost of the muffler, and at the same time, the separate decontamination component needs to be driven separately, resulting in an increase in the usage cost. Summary of the Invention

[0006] The present invention provides a laser marking robot for automobile mufflers, which solves the technical problem in the prior art that the setting of decontamination components before and after marking leads to an extended production cycle and reduced production efficiency.

[0007] The present invention provides a laser marking robot for automobile mufflers, including a body and two symmetrically arranged support plates fixedly installed inside the body in the front and rear. A conveyor belt for conveying mufflers is arranged between the two support plates. A sliding table unit is arranged inside the body. A marking device and two symmetrically arranged L-shaped frames are fixedly installed on the sliding table unit. Positioning units are arranged on the two L-shaped frames. A clamping and fixing unit is arranged on the positioning unit. The clamping and fixing unit includes a clamping component and a clamping control component for controlling the clamping component to clamp the muffler. Two symmetrically arranged scraping and decontamination units are arranged on the left positioning unit. The scraping and decontamination unit includes a scraping component, a telescopic component, and a scraping control component for controlling the scraping component to scrape the surface of the muffler.

[0008] The clamping component includes clamping plates. Two symmetrically arranged guide rails are fixedly installed on the top of the clamping plates. Sliders are slidably connected to the tops of the two left guide rails. The scraping component includes a mounting plate fixedly installed on the tops of the two sliders and a scraping plate fixedly installed on the bottom of the mounting plate and adapted to the muffler.

[0009] Drive the L-shaped frame and the marking device to move downwards, drive the positioning unit to press against the two support plates to position the clamping and fixing unit, the scraping and decontamination unit, and the marking device. Then the L-shaped frame continues to move downwards, so that the clamping control component drives the clamping component to clamp the muffler. At the same time, the left and right guide rails are butted against each other. Then the scraping control component drives the scraping plate to move to the right to scrape the welding residues on the surface of the muffler and perform secondary scraping on the surface of the muffler to the left after the marking is completed to remove the marking residues.

[0010] Further, the clamping component further includes a fixing plate and a first return spring fixedly installed on the fixing plate. A circular plate is fixedly installed at the left end of the first return spring. A first limiting rod slidably penetrating the fixing plate is fixedly installed on the right side of the circular plate. A mounting sleeve is fixedly installed at the right end of the first limiting rod. The muffler is composed of a cylinder body and a pipe. A sleeve is fixedly installed inside the mounting sleeve. The clamping plate is fixedly installed on the outside of the sleeve. There is a clearance fit between the sleeve and the muffler pipe.

[0011] Further, the clamping control component includes a first pressing rod and a first control rod fixedly installed on the left side of the mounting sleeve. The first control rod is composed of a first horizontal section and a first bent section. The first horizontal section slidably penetrates the fixing plate.

[0012] Further, the positioning unit includes a connecting plate fixedly installed at the front end of the L-shaped frame and fixedly connected to the marking device, and a third return spring fixedly installed at the bottom of the connecting plate. A positioning frame is fixedly installed at the bottom end of the third return spring. Claws symmetrically arranged in the front and rear and respectively cooperating with the two support plates are fixedly installed at the bottom of the positioning frame.

[0013] Furthermore, a second limiting rod is fixedly installed at the top of the positioning frame, covered by the third reset spring and sliding through the connecting plate. The fixed plate is fixedly installed on the inner wall of the top of the positioning frame, and the first pressing rod is fixedly installed on the front side of the connecting plate.

[0014] Furthermore, the telescopic assembly includes a moving plate, a first hinge seat fixedly installed on the positioning frame, and a second reset spring. The front end of the second reset spring is fixedly installed with a second hinge seat through a reset plate. A shear fork arm is arranged between the first hinge seat and the second hinge seat. The shear fork arm is composed of a plurality of upper fork arms and lower fork arms that are hinged to each other. The upper fork arm closest to the positioning frame is hinged to the second hinge seat, and the lower fork arm closest to the positioning frame is hinged to the first hinge seat.

[0015] Furthermore, the moving plate is fixedly installed on the top of the mounting plate. A chute is opened on the side of the moving plate close to the shear fork arm. The upper fork arm closest to the moving plate is hinged to the moving plate, and the lower fork arm closest to the moving plate is slidably connected in the chute. A reinforcing plate is fixedly installed on the positioning frame, a guiding groove is opened on the top of the reinforcing plate, and a guiding rod slidably connected to the guiding groove is fixedly installed at the bottom of the second hinge seat.

[0016] Furthermore, the scraping control assembly includes a second pressing rod fixedly installed on the connecting plate and a second control rod fixedly installed on the second hinge seat. The second control rod is composed of a second horizontal section and a second bent section.

[0017] Furthermore, arc-shaped plates are fixedly installed on the sides of the two support plates close to each other. The two arc-shaped plates are arranged symmetrically front and back, and a plurality of pulleys are rotatably installed on the sides of the two arc-shaped plates close to each other. The pulleys limit the silencer during the transportation of the silencer.

[0018] Furthermore, the sliding table unit includes a fixed frame fixedly installed inside the machine body and a Z-axis slide rail fixedly installed on the right side of the fixed frame. A Z-axis slide table is slidably connected to the right side of the Z-axis slide rail. An L-shaped frame and a marking device are both fixedly installed on the top of the Z-axis slide table, and the two L-shaped frames are symmetrically distributed on the left and right sides of the marking device.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. Before and after marking, the top of the muffler is scraped and decontaminated twice by the scraping component. The first scraping and decontamination effectively removes the welding residues on the top of the muffler, providing a clean and interference-free surface for laser marking, thus ensuring the clarity and accuracy of the marking lines, reducing the damage to the marker caused by impurities, extending the service life of the marker. The second scraping and decontamination can remove the metal oxide dust formed on the surface of the muffler by the laser beam during the laser marking process, thus ensuring the clarity and beauty of the marking. At the same time, the two scraping and decontamination operations do not need to be carried out separately after welding and before the finished product inspection process, thus shortening the production process and improving the production efficiency.

[0021] 2. By utilizing the moving stroke of the connecting plate, first, the fixed positioning of the positioning frame is realized, thus avoiding the movement or deviation of the marker, the clamping component and the scraping component during the marking process, and then improving the marking stability. Second, the clamping and fixing of the muffler by the clamping component is realized, avoiding the movement or deviation of the muffler during the marking process. Immediately afterwards, the scraping of the top surface of the muffler by the scraping component is also realized, removing the welding residues. And after the marking is completed, the scraping component performs secondary scraping on the top surface of the muffler to remove the marking residues, realizing the linkage between the components, improving the overall coordination of the equipment, and the whole process is completed through the moving stroke of the connecting plate, thus reducing the use cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0023] Figure 2 is the present invention Figure 1 A partial enlarged view of part A in the present invention.

[0024] Figure 3 is a three-dimensional structural schematic diagram of the support plate, conveyor belt, muffler, sliding table unit and marker parts of the present invention.

[0025] Figure 4 is a three-dimensional structural schematic diagram of the clamping and fixing unit, scraping and decontamination unit, positioning unit and L-shaped frame parts of the present invention.

[0026] Figure 5 is a three-dimensional structural schematic diagram of the connecting plate, return spring three, limiting rod two, positioning frame and guide rail parts of the present invention.

[0027] Figure 6 is a three-dimensional structural schematic diagram of the pressing rod two, sleeve, clamping plate and claw parts of the present invention.

[0028] Figure 7 is a three-dimensional structural schematic diagram of the fixing plate, mounting sleeve, control rod one and pressing rod one parts of the present invention.

[0029] Figure 8 is a schematic perspective view of the reset spring one, circular plate, limiting rod one, slider, mounting plate and scraper part of the present invention.

[0030] Figure 9 is a schematic perspective view of the guide rod, hinge seat one, reset spring two, reset plate, hinge seat two and scissor arm part of the present invention.

[0031] Figure 10 is a schematic perspective view of the fixing frame, Z-axis slide rail, Z-axis slide table, L-shaped frame and marking device part of the present invention.

[0032] Figure 11 is a schematic perspective view of the scissor arm and moving plate part of the present invention.

[0033] In the figure: 1, body; 2, support plate; 3, conveyor belt; 4, silencer; 5, slide unit; 6, clamping and fixing unit; 7, scraping and decontamination unit; 8, positioning unit; 9, L-shaped frame; 10, marking device; 11, arc plate; 12, guide rail; 13, slider; 14, pulley; 501, fixing frame; 502, Z-axis slide rail; 503, Z-axis slide table; 601, clamping assembly; 602, clamping control assembly; 6011, fixing plate; 6012, reset spring one; 6013, circular plate; 6014, limiting rod one; 6015, mounting sleeve; 6016, sleeve; 6017, clamping plate; 6021, pressing rod one; 6022, control rod one; 701, scraping assembly; 702, telescopic assembly; 703, scraping control assembly; 7011, mounting plate; 7012, scraper; 7021, hinge seat one; 7022, reset spring two; 7023, reset plate; 7024, hinge seat two; 7025, scissor arm; 7026, moving plate; 7027, chute; 7028, reinforcing plate; 7029, guide groove; 7020, guide rod; 7031, pressing rod two; 7032, control rod two; 801, connecting plate; 802, reset spring three; 803, positioning frame; 804, claw; 805, limiting rod two. Detailed implementation manners

[0034] Now, the subject matter described herein will be discussed with reference to example embodiments. It should be understood that discussing these embodiments is for enabling those skilled in the art to better understand and thus implement the subject matter described herein. Without departing from the protection scope of the content of this specification, changes can be made to the functions and arrangements of the elements discussed. Each example can omit, substitute or add various processes or components as needed. Additionally, the features described relative to some examples can also be combined in other examples.

[0035] Refer to Figure 1 , Figure 2 ,Figure 3 and Figure 4 In this embodiment, a laser marking robot for an automobile muffler is proposed, which includes a machine body 1 and two support plates 2 that are fixedly installed inside the machine body 1 and symmetrically arranged front and back. A conveyor belt 3 for conveying the muffler 4 is arranged between the two support plates 2. A sliding table unit 5 is arranged inside the machine body 1. A marking device 10 and two symmetrically arranged L-shaped frames 9 are fixedly installed on the sliding table unit 5. Positioning units 8 are arranged on the two L-shaped frames 9. A clamping and fixing unit 6 is arranged on the positioning unit 8. The clamping and fixing unit 6 includes a clamping assembly 601 and a clamping control assembly 602 for controlling the clamping assembly 601 to clamp the muffler 4. Two scraping and decontamination units 7 are arranged symmetrically front and back on the left positioning unit 8. The scraping and decontamination unit 7 includes a scraping assembly 701, a telescopic assembly 702, and a scraping control assembly 703 for controlling the scraping assembly 701 to scrape the surface of the muffler 4.

[0036] Refer to Figure 2 and Figure 3 On the side of the two support plates 2 close to each other, arc-shaped plates 11 are fixedly installed. The two arc-shaped plates 11 are symmetrically arranged front and back, and a plurality of pulleys 14 are rotatably installed on the side of the two arc-shaped plates 11 close to each other. The pulleys 14 limit the muffler 4 when conveying the muffler 4.

[0037] Refer to Figure 1 、 Figure 3 and Figure 10 The sliding table unit 5 includes a fixed frame 501 fixedly installed inside the machine body 1 and a Z-axis slide rail 502 fixedly installed on the right side of the fixed frame 501. A Z-axis slide table 503 is slidably connected to the right side of the Z-axis slide rail 502. The L-shaped frames 9 and the marking device 10 are both fixedly installed on the top of the Z-axis slide table 503, and the two L-shaped frames 9 are symmetrically distributed on the left and right sides of the marking device 10. A driving component is arranged on the top of the Z-axis slide rail 502 for driving the Z-axis slide table 503 to move.

[0038] Refer to Figure 1 、 Figure 3 and Figure 10 The driving component is a motor fixedly installed on the top of the Z-axis slide rail 502 and a lead screw fixedly installed at the bottom end of the output shaft of the motor and threadedly connected to the Z-axis slide table 503. The rotation of the output shaft of the motor drives the lead screw to drive the Z-axis slide table 503 to move.

[0039] Refer to Figure 4 、 Figure 5 、 Figure 6 and Figure 7The positioning unit 8 includes a connecting plate 801 fixedly installed at the front end of the L-shaped frame 9 and fixedly connected to the marker 10, and a reset spring 3 802 fixedly installed at the bottom of the connecting plate 801. A positioning frame 803 is fixedly installed at the bottom of the reset spring 3 802. A clamping claw 804 that is symmetrical front and back and respectively cooperates with the two support plates 2 is fixedly installed at the bottom of the positioning frame 803. A limiting rod 2 805 that is covered by the reset spring 3 802 and slides through the connecting plate 801 is fixedly installed on the top of the positioning frame 803.

[0040] When in use, the left end of the conveyor belt 3 is connected to the discharge end of the welding process, and then the conveyor belt 3 is driven by an external power supply to convey the silencer 4 conveyed from the welding process to the right. By directly connecting the conveyor belt 3 with the welding process, the silencer 4 is seamlessly connected from welding to marking, thereby improving the degree of automation of the production line. During the conveying process, the pulleys 14 on the two arc-shaped plates 11 contact with the silencer 4, which limits the conveying of the silencer 4 and prevents the silencer 4 from shifting during the conveying process. When the silencer 4 is conveyed to the bottom of the marker 10, the Z-axis slider 13 is driven by the driving component to move downward along the Z-axis slide rail 502, thereby driving the connecting plate 801 to The connecting plate 801 moves downward, and the marker 10 also moves downward, thereby driving the positioning frame 803 to move downward. As the connecting plate 801 moves downward, the claw 804 is first clamped on the top of the corresponding support plate 2 to complete the positioning of the positioning frame 803. Then the connecting plate 801 drives the marker 10 to continue to move downward close to the muffler 4, and at the same time begins to compress the return spring 3 802, and as the connecting plate 801 moves, the clamping component 601 is driven by the clamping control component 602 to clamp and fix the muffler 4. At the same time, the scraping control component 703 drives the scraping component 701 to move right to scrape and remove the welding residue on the top of the muffler 4. Finally, the marker 10 marks the cleaned surface.

[0041] When marking is completed, the Z-axis slider 13 is driven by the driving component to move upward along the Z-axis slide rail 502, thereby driving the connecting plate 801 to move upward, and the reset spring three 802 is gradually stretched and reset. During the reset process, the scraping control component 703 first drives the scraping component 701 to move left to scrape and remove the marking residues on the top of the muffler 4, and then the clamping control component 602 drives the clamping component 601 to release the clamping fixation of the muffler 4, then the reset spring three 802 is completely reset, and then the connecting plate 801 continues to move to drive the claw 804 to disengage from the top of the support plate 2, release the positioning of the positioning frame 803 and wait for the next marking operation.

[0042] See also Figure 4 , Figure 7 and Figure 8, the clamping assembly 601 includes a clamping plate 6017. Two symmetric front and rear guide rails 12 are fixedly installed at the top of the clamping plate 6017. Sliders 13 are slidably connected to the tops of the two left guide rails 12. The scraping assembly 701 includes a mounting plate 7011 fixedly installed at the tops of the two sliders 13 and a scraping plate 7012 fixedly installed at the bottom of the mounting plate 7011 and cooperating with the silencer 4.

[0043] Refer to Figure 4 、 Figure 7 and Figure 8 , the clamping assembly 601 further includes a fixing plate 6011 fixedly installed on the inner wall of the top of the positioning frame 803 and a first return spring 6012 fixedly installed on the fixing plate 6011. A circular plate 6013 is fixedly installed at the left end of the first return spring 6012. A first limiting rod 6014 is fixedly installed on the right side of the circular plate 6013 and slidably penetrates through the fixing plate 6011. A mounting sleeve 6015 is fixedly installed at the right end of the first limiting rod 6014. The silencer 4 is composed of a cylinder body and a pipe. A sleeve 6016 is fixedly installed in the mounting sleeve 6015. The clamping plate 6017 is fixedly installed on the outside of the sleeve 6016. There is a clearance fit between the sleeve 6016 and the pipe of the silencer 4.

[0044] Refer to Figure 4 、 Figure 7 and Figure 8 , the clamping control assembly 602 includes a first pressing rod 6021 fixedly installed on the front side of the connecting plate 801 and a first control rod 6022 fixedly installed on the left side of the mounting sleeve 6015. The first control rod 6022 is composed of a first horizontal section and a first bent section. The first horizontal section slidably penetrates through the fixing plate 6011. The upper end of the first bent section is inclined and the lower end is vertical.

[0045] During specific use, after the positioning frame 803 is fixed in position, the connecting plate 801 continues to drive the marking device 10 to move downward, and at the same time continues to drive the first pressing rod 6021 to move downward. During the downward movement of the first pressing rod 6021, it gradually approaches the first control rod 6022, and then downwardly presses the inclined part at the upper end of the first bent section of the first control rod 6022, thereby driving the first control rod 6022 to move towards the side close to the silencer 4, causing the circular plate 6013 to compress the first return spring 6012, and further pushing the mounting sleeve 6015 to move towards the side close to the silencer 4, so that the sleeve 6016 and the clamping plate 6017 move towards the side close to the silencer 4 accordingly, so that the two sleeves 6016 are sleeved on the pipe of the silencer 4, and at the same time the two clamping plates 6017 clamp and fix the cylinder body of the silencer 4. And while the two clamping plates 6017 clamp the silencer 4, the left and right guide rails 12 are butted against each other, and then the scraping control assembly 703 drives the scraping assembly 701 to move to the right to scrape and remove the welding residues on the top of the silencer 4. During the scraping process, the first pressing rod 6021 moves along the vertical part at the lower end of the first control rod 6022.

[0046] After the marking is completed, the Z-axis slider 13 is driven by the driving component to move upward along the Z-axis slide rail 502, thereby driving the connecting plate 801 to move upward. The third reset spring 802 gradually extends and resets. During the reset process, first, the scraping control component 703 drives the scraping component 701 to move leftward to scrape and decontaminate the marking residue on the top of the muffler 4. At the same time, the first pressing rod 6021 gradually moves upward along the vertical part at the lower end of the first control rod 6022. When the scraping component 701 moves leftward to the leftmost side of the left guide rail 12, the first pressing rod 6021 enters the inclined part at the upper end of the first control rod 6022 and continues to move upward. At this time, the first reset spring 6012 gradually resets. First, it drives the two clamping plates 6017 away from the cylinder body of the muffler 4, and then the sleeve 6016 disengages from the pipe of the muffler 4, releasing the clamping and fixing of the muffler 4. At the same time, the left and right guide rails 12 separate. Then, the first reset spring 6012 and the third reset spring 802 are fully reset. Then, when the connecting plate 801 continues to move, it will drive the claw 804 to disengage from the top of the support plate 2, releasing the positioning of the positioning frame 803 and waiting for the next marking operation.

[0047] Refer to Figure 4 、 Figure 5 、 Figure 6 、 Figure 8 and Figure 9 As shown in

[0048] Refer to Figure 4 、 Figure 5 、 Figure 6 、 Figure 8 、 Figure 9 and Figure 11 As shown in

[0049] Refer to Figure 4 、Figure 5 , Figure 6 , Figure 8 and Figure 9 , the scraping control assembly 703 includes a second pressure rod 7031 fixedly installed on the connecting plate 801 and a second control rod 7032 fixedly installed on the second hinge seat 7024. The second control rod 7032 is composed of a second horizontal section and a second bent section. The upper end of the second bent section is inclined and the lower end is vertical.

[0050] During specific use, when the two clamping plates 6017 clamp the silencer 4 and the guide rails 12 on the left and right sides are butted against each other, the second pressure rod 7031 continues to move downward. During the downward movement of the second pressure rod 7031, it gradually approaches the second control rod 7032, and then squeezes the inclined part of the upper end of the second bent section of the second control rod 7032, thereby driving the second control rod 7032 to move towards the side close to the second return spring 7022, causing the return plate 7023 to squeeze the second return spring 7022, and further pushing the second hinge seat 7024 to move towards the side close to the second return spring 7022. Furthermore, it pushes the upper fork arm hinged to the second hinge seat 7024 to move towards the lower fork arm hinged to the second hinge seat 7024. At the same time, the lower fork arm closest to the moving plate 7026 slides in the chute 7027, thereby pushing the moving plate 7026 to drive the mounting plate 7011 to slide to the right along the guide rail 12, and further driving the scraper 7012 to move to the right to scrape the welding residue on the surface of the silencer 4, providing a clean and interference-free surface for laser marking, thereby ensuring the clarity and accuracy of the marking lines, reducing the damage of impurities to the marker 10, extending the service life of the marker 10. When the scraper 7012 moves to the rightmost side of the right guide rail 12, the marker 10 stops moving, and then the marking operation is carried out.

[0051] After the marking is completed, the driving component drives the Z-axis slider 13 to move upward along the Z-axis slide rail 502, so as to drive the connecting plate 801 and the marking device 10 to move upward. At the same time, the third reset spring 802 gradually stretches and resets. During the reset process, first, the second pressing rod 7031 moves upward along the vertical part at the lower end of the second control rod 7032 and enters the inclined part at the upper end of the second control rod 7032, and then continues to move upward along the inclined part. During this process, the second reset spring 7022 gradually stretches and resets, pushing the second hinge seat 7024 to move away from the second reset spring 7022, so that the upper fork arm hinged to the second hinge seat 7024 moves away from the lower fork arm hinged to the second hinge seat 7024, thereby driving the scraper 7012 to move leftward to scrape the surface of the silencer 4, removing the metal oxide dust (iron oxide) formed on the surface of the silencer 4 by the action of the laser beam during the laser marking process, thus avoiding affecting the clarity and aesthetics of the marking. At the same time, there is no need to separately remove the welding residue and marking residue on the surface of the silencer 4 after welding and before the finished product inspection process, thereby shortening the production process and improving the production efficiency. When the scraper 7012 moves to the leftmost side of the left guide rail 12, the second reset spring 7022 is completely reset. Then, the clamping control component 602 drives the clamping component 601 to release the clamping and fixing of the silencer 4. Then, the third reset spring 802 is completely reset. When the connecting plate 801 continues to move, it will drive the claw 804 to disengage from the top of the support plate 2 to release the positioning of the positioning frame 803 and wait for the next marking operation.

[0052] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly illustrating the present invention, rather than limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A car muffler laser marking robot, characterized in that: include: A machine body (1) and two support plates (2) fixedly mounted inside the machine body (1) and symmetrically arranged front and back, a conveyor belt (3) for conveying a silencer (4) is arranged between the two support plates (2), a slide unit (5) is arranged inside the machine body (1), a marker (10) and two left-right symmetrical L-shaped frames (9) are fixedly mounted on the slide unit (5), a positioning unit (8) is arranged on each of the two L-shaped frames (9), and a clamping and fixing unit is arranged on the positioning unit (8) (6), the clamping and fixing unit (6) comprises a clamping component (601) and a clamping control component (602) for controlling the clamping component (601) to clamp the muffler (4), and the left positioning unit (8) is provided with two scraping and decontamination units (7) symmetrically arranged in front and back, and the scraping and decontamination units (7) comprise a scraping component (701), a telescopic component (702) and a scraping control component (703) for controlling the scraping component (701) to scrape the surface of the muffler (4); The clamping assembly (601) comprises a clamping plate (6017), two guide rails (12) are fixedly mounted on the top of the clamping plate (6017) and are symmetrical in front and back, and the tops of the two left guide rails (12) are slidably connected with sliders (13), and the scraping assembly (701) comprises a mounting plate (7011) fixedly mounted on the tops of the two sliders (13) and a scraper (7012) fixedly mounted on the bottom of the mounting plate (7011) and matched with the muffler (4); The L-shaped frame (9) and the marker (10) are driven to move downward, driving the positioning unit (8) to press the two support plates (2) to position the clamping and fixing unit (6), the scraping and decontamination unit (7) and the marker (10). Then, the L-shaped frame (9) continues to move downward, causing the clamping control component (602) to drive the clamping component (601) to clamp the muffler (4), while the left and right guide rails (12) are connected to each other. Then, the scraping control component (703) drives the scraper (7012) to move right to scrape off the welding residue on the surface of the muffler (4), and after the marking is completed, the surface of the muffler (4) is scraped to the left for a second time to remove the marking residue.

2. The automobile muffler laser marking robot according to claim 1, characterized in that: The clamping assembly (601) further comprises a fixing plate (6011) and a return spring (6012) fixedly mounted on the fixing plate (6011); a circular plate (6013) is fixedly mounted on the left end of the return spring (6012); a limit rod (6014) is fixedly mounted on the right side of the circular plate (6013) and slides through the fixing plate (6011); a mounting sleeve (6015) is fixedly mounted on the right end of the limit rod (6014); the silencer (4) comprises a cylinder and a pipe; a sleeve (6016) is fixedly mounted inside the mounting sleeve (6015); a clamping plate (6017) is fixedly mounted on the outside of the sleeve (6016); and a clearance fit is formed between the sleeve (6016) and the pipe of the silencer (4).

3. The automobile muffler laser marking robot according to claim 2, characterized in that: The clamping control assembly (602) comprises a pressure rod (6021) and a control rod (6022) fixedly mounted on the left side of the mounting sleeve (6015); the control rod (6022) comprises a horizontal section (6021) and a bending section (6015); the horizontal section (6022) slides through the fixed plate (6011).

4. The automobile muffler laser marking robot according to claim 3, characterized in that: The positioning unit (8) comprises a connecting plate (801) fixedly mounted on the front end of the L-shaped frame (9) and fixedly connected to the marker (10), and a return spring (802) fixedly mounted on the bottom of the connecting plate (801); a positioning frame (803) is fixedly mounted on the bottom end of the return spring (802); and claws (804) are fixedly mounted on the bottom of the positioning frame (803) and are symmetrical in front and back and respectively matched with the two support plates (2).

5. The automobile muffler laser marking robot according to claim 4, characterized in that: A limiting rod 2 (805) is fixedly installed on the top of the positioning frame (803) and is covered by a return spring 3 (802) and slides through the connecting plate (801). The fixing plate (6011) is fixedly installed on the inner wall of the top of the positioning frame (803), and the pressing rod 1 (6021) is fixedly installed on the front side of the connecting plate (801).

6. The automobile muffler laser marking robot according to claim 4, characterized in that: The telescopic assembly (702) comprises a moving plate (7026), an articulated seat 1 (7021) fixedly mounted on a positioning frame (803), and a reset spring 2 (7022); the front end of the reset spring 2 (7022) is fixedly mounted with an articulated seat 2 (7024) via a reset plate (7023); a scissor arm (7025) is arranged between the articulated seat 1 (7021) and the articulated seat 2 (7024); the scissor arm (7025) is composed of a plurality of upper fork arms and lower fork arms hinged to each other; the upper fork arm closest to the positioning frame (803) is hinged to the articulated seat 2 (7024), and the lower fork arm closest to the positioning frame (803) is hinged to the articulated seat 1 (7021).

7. The automobile muffler laser marking robot according to claim 6, characterized in that: The movable plate (7026) is fixedly mounted on the top of the mounting plate (7011); a sliding groove (7027) is provided on the side of the movable plate (7026) close to the scissor arm (7025); an upper fork arm on the side closest to the movable plate (7026) is hinged to the movable plate (7026); a lower fork arm on the side closest to the movable plate (7026) is slidably connected in the sliding groove (7027); a reinforcing plate (7028) is fixedly mounted on the positioning frame (803); a guide groove (7029) is provided on the top of the reinforcing plate (7028); and a guide rod (7020) slidably connected to the guide groove (7029) is fixedly mounted on the bottom of the second hinge seat (7024).

8. The automobile muffler laser marking robot according to claim 6, characterized in that: The scraping control assembly (703) comprises a second pressure rod (7031) fixedly mounted on the connecting plate (801) and a second control rod (7032) fixedly mounted on a second hinge seat (7024), wherein the second control rod (7032) is composed of a second horizontal section and a second bending section.

9. The automobile muffler laser marking robot according to claim 1, characterized in that: An arc-shaped plate (11) is fixedly mounted on one side of the two support plates (2) that are close to each other. The two arc-shaped plates (11) are symmetrically arranged front to back. A plurality of pulleys (14) are rotatably mounted on one side of the two arc-shaped plates (11) that are close to each other. The pulleys (14) limit the position of the muffler (4) when the muffler (4) is transported.

10. The automobile muffler laser marking robot according to claim 1, characterized in that: The slide unit (5) comprises a fixed frame (501) fixedly mounted inside the machine body (1) and a Z-axis slide rail (502) fixedly mounted on the right side of the fixed frame (501); a Z-axis slide (503) is slidably connected to the right side of the Z-axis slide rail (502); an L-shaped frame (9) and a marker (10) are both fixedly mounted on the top of the Z-axis slide (503), and two L-shaped frames (9) are symmetrically distributed on the left and right sides of the marker (10).

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