Laser marking robot for automobile silencer

Abstract

The invention relates to the technical field of marking robots, and particularly discloses an automobile silencer laser marking robot which comprises a machine body and two supporting plates fixedly installed in the machine body and symmetrical front and back, a conveying belt used for conveying a silencer is arranged between the two supporting plates, and a sliding table unit is arranged in the machine body. A marking device and two L-shaped frames which are in bilateral symmetry are fixedly installed on the sliding table unit, positioning units are arranged on the two L-shaped frames, clamping and fixing units are arranged on the positioning units, and before marking and after marking, the top of the silencer is subjected to two times of scraping decontamination operation through a scraping assembly. Welding residues and marking residues on the top of the silencer are effectively removed, a clean and interference-free surface is provided for laser marking, the definition and accuracy of marking lines are ensured, meanwhile, damage of impurities to the marking device is reduced, and the service life of the marking device is prolonged.

Description

Technical Field

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

[0002] The car muffler, also known as the car silencer, is an important component in the car exhaust system. Its main function is to reduce the noise generated when the motor vehicle engine is working and avoid the noise affecting the driver, passengers and the surrounding environment.

[0003] The production process of automobile mufflers generally includes: raw material preparation, stamping, welding assembly, laser marking and finished product inspection. Among them, laser marking is an important process in the production process of automobile mufflers. It is mainly used to mark the product number, production date, manufacturer information, etc. on the muffler. At present, the laser marking of automobile mufflers is to fix the muffler after welding on the workbench through a fixture, and then use the marker to mark it. However, there are still some defects in the current marking process:

[0004] At present, in the production process of automobile mufflers, a separate decontamination component is set between the welding process and the marking process to remove welding residues to ensure 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] But first of all, 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 to say, every time a silencer is decontaminated, it is necessary to wait for the ongoing marking operation to be completed before entering the marking process. Similarly, after a muffler that has been marked is sent to the next decontamination component to complete the decontamination, the muffler that is being marked has not yet completed the marking operation. This causes the decontamination components between the welding process and the marking process and the marking process. During the long production process, workpieces will gradually accumulate, and the decontamination components between the marking process and the finished product inspection process will be idle for a period of time during the muffler marking process. While causing congestion in the production line, it reduces the utilization rate of the equipment and increases the overall production cycle. Although such frequency asynchrony can shorten the marking process by appropriately increasing the marking speed in actual production, thereby alleviating the problem of extended production cycle to a certain extent, the increase in marking speed will also sacrifice the quality and effect of marking to a certain extent. Secondly, setting up a decontamination component separately also means an increase in the production investment cost of the muffler. At the same time, a separate decontamination component needs to be driven separately, which also causes an increase in the cost of use. Summary of the invention

[0006] The invention provides a laser marking robot for an automobile muffler, which solves the technical problem in the prior art that a decontamination component is arranged before and after marking, thereby prolonging the production cycle and reducing the production efficiency.

[0007] The present invention provides a laser marking robot for automobile mufflers, comprising a machine body and two support plates fixedly installed inside the machine body and symmetrical in front and back, a conveyor belt for conveying the muffler is arranged between the two support plates, a slide unit is arranged inside the machine body, a marker and two L-shaped frames symmetrical in left and right are fixedly installed on the slide 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 comprises a clamping assembly and a clamping control assembly for controlling the clamping assembly to clamp the muffler, two scraping and decontamination units symmetrical in front and back are arranged on the left positioning unit, the scraping and decontamination units comprise a scraping assembly, a telescopic assembly and a scraping control assembly for controlling the scraping assembly to scrape the surface of the muffler.

[0008] The clamping assembly includes a clamping plate, on the top of which two front-to-rear symmetrical guide rails are fixedly installed, and the tops of the two left guide rails are slidably connected with sliders. The scraping assembly includes a mounting plate fixedly installed on the tops of the two sliders and a scraper fixedly installed on the bottom of the mounting plate and matched with the muffler.

[0009] Drive the L-shaped frame and the marker downward, drive the positioning unit to press the two support plates to position the clamping unit, the scraping and decontamination unit and the marker, then the L-shaped frame continues to move downward, so that the clamping control component drives the clamping component to clamp the muffler, and at the same time the left and right side guide rails are connected, and then the scraping control component drives the scraper to move right to scrape off the welding residue on the surface of the muffler and scrape the muffler surface to the left for the second time after marking is completed to remove the marking residue.

[0010] Furthermore, the clamping assembly also includes a fixed plate and a return spring fixedly installed on the fixed plate, a circular plate is fixedly installed on the left end of the return spring, a limiting rod slidably penetrating the fixed plate is fixedly installed on the right side of the circular plate, a mounting sleeve is fixedly installed on the right end of the limiting rod, the muffler is composed of a cylinder and a pipe, a sleeve is fixedly installed in the mounting sleeve, the clamping plate is fixedly installed on the outside of the sleeve, and the sleeve and the muffler pipe are clearance-matched.

[0011] Furthermore, the clamping control assembly includes a pressure rod and a control rod fixedly installed on the left side of the mounting sleeve, the control rod is composed of a horizontal section and a bending section, and the horizontal section slides through the fixed plate.

[0012] Furthermore, the positioning unit includes a connecting plate fixedly installed at the front end of the L-shaped frame and fixedly connected to the marker, and a reset spring three fixedly installed at the bottom of the connecting plate. A positioning frame is fixedly installed at the bottom end of the reset spring three, and claws are fixedly installed at the bottom of the positioning frame that are symmetrical front and back and respectively cooperate with the two support plates.

[0013] Furthermore, a limiting rod 2 is fixedly installed on the top of the positioning frame, which is covered by a reset spring 3 and slides through the connecting plate. The fixing plate is fixedly installed on the inner wall of the top of the positioning frame, and a pressure rod 1 is fixedly installed on the front side of the connecting plate.

[0014] Furthermore, the telescopic assembly includes a movable plate, an articulated seat 1 fixedly mounted on a positioning frame, and a return spring 2, the front end of the return spring 2 is fixedly mounted with the articulated seat 2 via the return plate, a scissor arm is arranged between the articulated seat 1 and the articulated seat 2, the scissor arm 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 is hinged to the articulated seat 2, and the lower fork arm closest to the positioning frame is hinged to the articulated seat 1.

[0015] Furthermore, the movable plate is fixedly installed on the top of the mounting plate, a slide groove is provided on the side of the movable plate close to the scissor arm, the upper fork arm closest to the side of the movable plate is hinged to the movable plate, and the lower fork arm closest to the side of the movable plate is slidably connected in the slide groove, a reinforcement plate is fixedly installed on the positioning frame, a guide groove is provided on the top of the reinforcement plate, and a guide rod slidably connected to the guide groove is fixedly installed on the bottom of the second articulated seat.

[0016] Furthermore, the scraping control assembly includes a second pressure rod fixedly mounted on the connecting plate and a second control rod fixedly mounted on the second hinge seat, and the second control rod is composed of a second horizontal section and a second bending section.

[0017] Furthermore, an arc-shaped plate is fixedly installed on one side of the two support plates, the two arc-shaped plates are symmetrically arranged front and back, and a plurality of pulleys are rotatably installed on one side of the two arc-shaped plates, and the pulleys limit the silencer when conveying the silencer.

[0018] Furthermore, the slide 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, the Z-axis slide is slidably connected to the right side of the Z-axis slide rail, the L-shaped frame and the marker are both fixedly installed on the top of the Z-axis slide, and the two L-shaped frames are symmetrically distributed on the left and right sides of the marker.

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

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

[0021] 2. By utilizing the movement of the connecting plate, firstly, the positioning frame is fixedly positioned, thereby preventing the marker, the clamping assembly and the scraping assembly from moving or deflecting during the marking process, thereby improving the marking stability. Secondly, the clamping assembly fixes the muffler, thereby preventing the muffler from moving or deflecting during the marking process. Then, the scraping assembly scrapes the top surface of the muffler to remove welding residues, and after the marking is completed, the scraping assembly scrapes the top surface of the muffler for the second time to remove the marking residues, thereby realizing the linkage between the various components and improving the overall coordination of the equipment. Moreover, the entire process is completed through the movement of the connecting plate, thereby reducing the use cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 2 The present invention Figure 1 A partial enlarged view of part A.

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

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

[0026] Figure 5 It is a three-dimensional structural schematic diagram of the connecting plate, the third return spring, the second limit rod, the positioning frame and the guide rail part of the present invention.

[0027] Figure 6 It is a three-dimensional structural schematic diagram of the pressure rod 2, sleeve, clamping plate and claw part of the present invention.

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

[0029] Figure 8 The present invention is a three-dimensional structural schematic diagram of a return spring, a circular plate, a limit rod, a slider, a mounting plate and a scraper part.

[0030] Fig. 9 It is a schematic diagram of the three-dimensional structure of the guide rod, the first hinge seat, the second reset spring, the reset plate, the second hinge seat and the scissor arm part of the present invention.

[0031] Fig.10 It is a partial three-dimensional structural schematic diagram of the fixing frame, Z-axis slide rail, Z-axis slide table, L-shaped frame and marker of the present invention.

[0032] Fig.11 It is a schematic diagram of the three-dimensional structure of the scissor arms and the movable plate part of the present invention.

[0033] In the figure: 1, machine 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, marker; 11, arc plate; 12, guide rail; 13, slider; 14, pulley; 501, fixed frame; 502, Z-axis slide rail; 503, Z-axis slide; 601, clamping assembly; 602, clamping control assembly; 6011, fixed plate; 6012, reset spring 1; 6013, round plate; 6014, limit rod 1; 6015, installation sleeve; 6016, sleeve; 6017, clamping plate; 6021, pressure rod 1; 6022, control rod 1; 701, scraper assembly; 702, telescopic assembly; 703, scraper control assembly; 7011, mounting plate; 7012, scraper; 7021, hinge seat 1; 7022, reset spring 2; 7023, reset plate; 7024, hinge seat 2; 7025, scissor arm; 7026, moving plate; 7027, slide groove; 7028, reinforcement plate; 7029, guide groove; 7020, guide rod; 7031, pressure rod 2; 7032, control rod 2; 801, connecting plate; 802, reset spring 3; 803, positioning frame; 804, claw; 805, limit rod 2. DETAILED DESCRIPTION

[0034] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is to enable those skilled in the art to better understand and implement the subject matter described herein. The functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the present specification. Various examples may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0035] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 In this embodiment, a car muffler laser marking robot is proposed, including a body 1 and two support plates 2 fixedly installed inside the 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 slide unit 5 is arranged inside the body 1, a marker 10 and two L-shaped frames 9 symmetrically arranged left and right are fixedly installed on the slide 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 component 601 and a clamping control component 602 for controlling the clamping component 601 to clamp the muffler 4, and two scraping and decontamination units 7 symmetrically arranged front and back are arranged on the left positioning unit 8, the scraping and decontamination unit 7 includes 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.

[0036] See also Figure 2 and Figure 3 An arc-shaped plate 11 is fixedly installed 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, and a plurality of pulleys 14 are rotatably installed on one side of the two arc-shaped plates 11 that are close to each other. The pulleys 14 limit the silencer 4 when the silencer 4 is transported.

[0037] See also Figure 1 , Figure 3 and Fig.10 The slide unit 5 includes a fixed frame 501 fixedly installed inside the body 1 and a Z-axis slide rail 502 fixedly installed on the right side of the fixed frame 501. The right side of the Z-axis slide rail 502 is slidably connected with a Z-axis slide 503. The L-shaped frame 9 and the marker 10 are both fixedly installed on the top of the Z-axis slide 503, and the two L-shaped frames 9 are symmetrically distributed on the left and right sides of the marker 10. A driving component for driving the Z-axis slide 503 to move is provided on the top of the Z-axis slide rail 502.

[0038] See also Figure 1 , Figure 3 and Fig.10 The driving components are a motor fixedly mounted on the top of the Z-axis slide rail 502 and a screw fixedly mounted on the bottom of the motor output shaft and threadedly connected to the Z-axis slide 503. The rotation of the motor output shaft drives the screw to drive the Z-axis slide 503 to move.

[0039] See also 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 8The clamping assembly 601 includes a clamping plate 6017, and two front-to-rear symmetrical guide rails 12 are fixedly installed on the top of the clamping plate 6017. The tops of the two left guide rails 12 are slidably connected with sliders 13. The scraping assembly 701 includes a mounting plate 7011 fixedly installed on the tops of the two sliders 13 and a scraper 7012 fixedly installed on the bottom of the mounting plate 7011 and matched with the muffler 4.

[0043] See also Figure 4 , Figure 7 and Figure 8 The clamping assembly 601 also includes a fixing plate 6011 fixedly mounted on the inner wall of the top of the positioning frame 803 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 limiting rod 6014 slidingly penetrating the fixing plate 6011 is fixedly mounted on the right side of the circular plate 6013. A mounting sleeve 6015 is fixedly mounted on the right end of the limiting rod 6014. The muffler 4 is composed of a cylinder and a pipe. A sleeve 6016 is fixedly mounted in the mounting sleeve 6015. A clamping plate 6017 is fixedly mounted on the outside of the sleeve 6016. The sleeve 6016 and the pipe of the muffler 4 are clearance-matched.

[0044] See also Figure 4 , Figure 7 and Figure 8 The clamping control assembly 602 includes a pressure rod 6021 fixedly installed on the front side of the connecting plate 801 and a control rod 6022 fixedly installed on the left side of the mounting sleeve 6015. The control rod 6022 is composed of a horizontal section 1 and a bending section 1. The horizontal section 1 slides through the fixed plate 6011, and the upper end of the bending section 1 is inclined and the lower end is vertical.

[0045] When in use, after the positioning frame 803 is fixed, the connecting plate 801 continues to drive the marking device 10 to move downward, and at the same time continues to drive the pressure rod 1 6021 to move downward. During the downward movement, the pressure rod 1 6021 gradually approaches the control rod 1 6022, and then presses the upper end inclined portion of the bending section of the control rod 1 6022 downward, thereby driving the control rod 1 6022 to move closer to the muffler 4, so that the circular plate 6013 squeezes the return spring 1 6012, and then pushes the installation sleeve 6015 to move closer to the muffler 4, so that the sleeve 60 16 and the clamping plate 6017 move toward the side close to the muffler 4, so that the two sleeves 6016 are mounted on the pipe of the muffler 4, and at the same time, the two clamping plates 6017 clamp the cylinder of the muffler 4, and while the two clamping plates 6017 clamp the muffler 4, the guide rails 12 on the left and right sides dock with each other, and then 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. During the scraping process, the pressure rod 6021 moves along the lower vertical part of the control rod 6022.

[0046] When 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, and the reset spring 3 802 gradually stretches and resets. During the reset process, the scraper control component 703 first drives the scraper component 701 to move left to scrape and remove the marking residue on the top of the muffler 4, and at the same time, the pressure rod 1 6021 gradually moves upward along the lower vertical part of the control rod 1 6022. When the scraper component 701 moves to the left to the leftmost side of the left guide rail 12, the pressure rod 1 6021 enters the control rod 1 The upper end inclined part of the control rod 6022 continues to move upward. At this time, the reset spring 6012 is gradually reset, first driving the two clamping plates 6017 to disengage from the muffler 4 cylinder, and then the sleeve 6016 is separated from the muffler 4 pipe, releasing the clamping fixation of the muffler 4. At the same time, the guide rails 12 on the left and right sides are separated, and then the reset spring 6012 and the reset spring 802 are completely reset. Then the connecting plate 801 continues to move, which 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.

[0047] See also Figure 4 , Figure 5 , Figure 6 , Figure 8 and Fig. 9 The telescopic assembly 702 includes a moving plate 7026, an articulated seat 1 7021 fixedly mounted on the 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 through 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.

[0048] See also Figure 4 , Figure 5 , Figure 6 , Figure 8 , Fig. 9 and Fig.11 The movable plate 7026 is fixedly mounted on the top of the mounting plate 7011, a slide groove 7027 is provided on the side of the movable plate 7026 close to the scissor arm 7025, the upper fork arm closest to the movable plate 7026 is hinged to the movable plate 7026, the lower fork arm closest to the movable plate 7026 is slidably connected in the slide 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 hinge seat 7024.

[0049] See also Figure 4 , Figure 5 , Figure 6 , Figure 8 and Fig. 9 The scraping control assembly 703 includes a pressure rod 7031 fixedly mounted on the connecting plate 801 and a control rod 7032 fixedly mounted on the hinge seat 7024. The control rod 7032 is composed of a horizontal section 2 and a bending section 2. The upper end of the bending section 2 is inclined and the lower end is vertical.

[0050] When in 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 pressure rod 7031 continues to move downward, and gradually approaches the control rod 7032 during the downward movement, and then presses downward the inclined portion of the upper end of the bending section 2 of the control rod 7032, thereby driving the control rod 7032 to move toward the side close to the reset spring 7022, so that the reset plate 7023 squeezes the reset spring 7022, and then pushes the hinge seat 7024 to move toward the side close to the reset spring 7022, and then pushes the upper fork arm hinged to the hinge seat 7024 toward the hinge seat 7024. One side of the lower fork arm hinged with 7024 moves, and at the same time, the lower fork arm closest to the side of the movable plate 7026 slides in the slide groove 7027, thereby pushing the movable plate 7026 to drive the mounting plate 7011 to slide to the right along the guide rail 12, and then driving the scraper 7012 to move to the right to scrape off the welding residue on the surface of the muffler 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, and 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 performs the marking operation.

[0051] 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 and the marker 10 to move upward, and at the same time, the reset spring 3 802 is gradually stretched and reset. During the reset process, the pressure rod 2 7031 first moves upward along the lower vertical part of the control rod 2 7032 and enters the upper inclined part of the control rod 2 7032, and then continues to move upward along the inclined part. During this process, the reset spring 2 7022 is gradually stretched and reset, pushing the articulated seat 2 7024 to move away from the reset spring 2 7022, so that the upper fork arm hinged to the articulated seat 2 7024 moves away from the lower fork arm hinged to the articulated seat 2 7024, thereby driving the scraper 7012 to move left to scrape the silencer 4 surface The surface is removed to remove the metal oxide dust (iron oxide) formed by the laser beam acting on the surface of the muffler 4 during the laser marking process, so as to avoid affecting the clarity and aesthetics of the marking. At the same time, there is no need to remove the welding residue and marking residue on the surface of the muffler 4 separately after the welding is completed and before the finished product inspection process, thereby shortening the production process and improving production efficiency. When the scraper 7012 moves to the leftmost side of the left guide rail 12, the reset spring 2 7022 is completely reset, and then the clamping control component 602 drives the clamping component 601 to release the clamping fixation of the muffler 4, and then the reset spring 3 802 is completely reset, and the connecting plate 801 continues to move to 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 explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection 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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