Laser marking device for frequency converter

Abstract

The invention relates to the field of laser marking devices, and discloses a laser marking device for a frequency converter, which comprises a partition plate conveyor, and the partition plate conveyor is connected with a marking head through a guide return mechanism; the marking head is connected with an abutting transmission mechanism, the abutting transmission mechanism comprises a rotating ring, and the rotating ring is in transmission fit with a cleaning mechanism. A frequency converter is placed on the partition plate conveyor and close to the partition plate, and the frequency converter is provided with a marking area. According to the laser marking device for the frequency converter, the frequency converter is driven by the partition plate conveyor to move to the position abutting against the transmission mechanism, it is ensured that the height difference between the marking head and the frequency converter is constant, the laser marking device adapts to different models, the cleaning mechanism rotates to scrape and suck impurities in a marking area in the moving process, and the cleanliness is improved; the auxiliary air injection piece continuously sucks air and injects air along with rotation, uncleaned impurities are blown up, the cleaning effect is enhanced, and the marking quality and efficiency are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of laser marking devices, and more specifically, to a laser marking device for a frequency converter. Background Art

[0002] The inverter is a device specially used for power control. It combines the advantages of frequency conversion technology and microelectronics technology. It can accurately control the operating state of AC motors by adjusting the frequency of the motor's working power supply. In the production process, in order to facilitate user identification and selection, the inverter is usually marked with various product parameters and other information. Some of this information is directly installed on the inverter in the form of a nameplate, and some is directly printed on the surface of the inverter shell by a marking machine.

[0003] In some cases, customers have specific requirements for the identification of inverters, such as exclusive serial numbers, QR codes or customer logos. To meet these customized requirements, companies need to use the same laser marking machine to mark inverters of different models. However, due to the different models of inverters, the distance between the marking surface and the marking head is also different. According to normal operations, when laser marking objects of different heights, the height of the marking head needs to be adjusted to ensure clear marking. However, frequent adjustment of the height of the marking head will reduce marking efficiency and marking quality. Summary of the invention

[0004] The invention provides a laser marking device for a frequency converter, which solves the technical problem in the related art that frequent adjustment of the height of a marking head of the laser marking device for a frequency converter will reduce the marking efficiency and the marking quality.

[0005] The present invention provides a laser marking device for a frequency converter, comprising a partition conveyor, wherein the partition conveyor is connected to a marking head via a guide return mechanism; The marking head is connected with a pressing transmission mechanism, the pressing transmission mechanism comprises a rotating ring, and the rotating ring transmission is equipped with a cleaning mechanism; A frequency converter is placed on the partition conveyor near the partition, and the frequency converter has a marking area; The inverter is driven by the partition conveyor to move to the position of the pressing transmission mechanism and presses against the swivel. The pressing action drives the marking head to slide along the guide return mechanism so that the height difference between the marking head and the inverter remains constant. During the pressing transmission process between the inverter and the swivel, the cleaning mechanism cleans the marking area of ​​the inverter, so that the marking head can perform clear marking operations on the inverter.

[0006] As a further optimization scheme of the present invention, the guide return mechanism includes a guide rod, a return spring, a moving block and a slip ring. The slip ring is slidably sleeved on the guide rod. A guide groove is provided on the guide rod. The moving block is slidably arranged inside the guide groove and fixedly connected to the slip ring. The return spring is located inside the guide groove. One end of the return spring is fixedly connected to the moving block, and the other end is connected to the top wall inside the guide groove.

[0007] As a further optimization solution of the present invention, a guide rod is installed inside the guide groove, and one end of the guide rod slides through the moving block and the return spring.

[0008] As a further optimization scheme of the present invention, the pressure transmission mechanism also includes a hollow disc, a connecting column and a connecting frame. The connecting column is installed in the middle part of the hollow disc, the rotating ring is rotatably sleeved in the middle part of the outer circumference of the hollow disc, the hollow disc is connected to the marking head through the connecting frame, and a mounting plate is installed on the outer circumference of the hollow disc, and a rolling member is rotatably provided at the bottom of the mounting plate.

[0009] As a further optimization solution of the present invention, a guide plate is installed on the feeding side of the hollow disc, and the end of the guide plate away from the hollow disc is inclined upward so as to be in contact with the frequency converter in advance.

[0010] As a further optimization scheme of the present invention, the cleaning mechanism includes a rotating drum, a rotating tube, a scraper, a first spring, a sleeve rod and a connecting block, the rotating tube is rotatably sleeved on the bottom of the hollow disc, one end of the rotating tube is connected to the exhaust fan through a rotating joint, the rotating tube is transmission-coordinated with a rotating ring, a through opening is provided on the rotating tube, the rotating drum is fixedly sleeved on the rotating tube, the scraper is slidably sleeved on the rotating drum, and the interior of the scraper is hollow, a connecting opening is provided at the part where the scraper is located inside the rotating drum, one side of the part where the scraper extends out of the outside of the rotating drum is inclined and is provided with an air suction hole, the connecting block is installed on the scraper, one end of the sleeve rod slides through the connecting block, and the other end slides through the first spring and is fixedly connected to the rotating tube, one end of the first spring is fixedly connected to the connecting block, and the other end is fixedly connected to the rotating tube, and the scraper is connected to an auxiliary jet component for jetting the frequency converter.

[0011] As a further optimization scheme of the present invention, the outer periphery of the rotating tube is fixedly sleeved with a driven gear, the interior of the rotating ring is sleeved with an internal gear ring, the internal gear ring is transmitted to the driven gear through a transmission gear, and the transmission gear is rotatably connected to the hollow disc through a rotating shaft.

[0012] As a further optimization scheme of the present invention, the auxiliary jet component includes a plurality of sleeve frames installed on the inner circumference of the rotating drum, the scraper passes through the sleeve frame and is slidably sleeved with a movable plate, the interior of the sleeve frame is slidably sleeved with a movable plate, the movable plate is slidably sleeved with the sleeve frame, a right-angle plate is installed on the sleeve frame, the right-angle plate is connected to the movable plate through a second spring, the interior of the scraper is divided into a first chamber and a second chamber by the second spring, and a through hole and an inlet communicating with the second chamber are respectively opened on the scraper, a mounting frame is installed on the sleeve frame, the mounting frame is rotatably connected to a reel through a rotating rod, the reel is connected to the movable plate through a pull rope, a rack is installed on the top of the scraper, and a rotating gear driven by the rack is fixedly sleeved on the rotating rod.

[0013] As a further optimization solution of the present invention, a stabilizing rod is slidably sleeved on the right-angle plate, and one end of the stabilizing rod slides through the second spring and is connected to the moving plate.

[0014] As a further optimization solution of the present invention, anti-slip grooves are provided on the outer circumference of the rotating ring.

[0015] The beneficial effects of the present invention are: 1. In the laser marking device for a frequency converter described in the present invention, the partition conveyor drives the frequency converter to move to the position of the pressing transmission mechanism, so that the frequency converter is pressed against the swivel, ensuring a constant height difference between the marking head and the frequency converter, so that it can flexibly adapt to frequency converter models of different heights, thereby improving the efficiency and quality of marking.

[0016] 2. In the laser marking device for a frequency converter described in the present invention, as the frequency converter moves, the cleaning mechanism will rotate accordingly, and its action is to scrape and absorb the marking area on the frequency converter, so as to improve the cleanliness of the marking area, thereby ensuring that the marking head can obtain higher quality performance during marking.

[0017] 3. In the laser marking device for a frequency converter described in the present invention, when the cleaning mechanism is in a rotating state, the auxiliary jet component thereon will rotate accordingly and continuously perform the functions of suction and jet. In the jet stage, it will blow air to the part of the marking area that has not been cleaned yet, with the purpose of blowing up those impurities, so that the cleaning mechanism can more effectively absorb and discharge these impurities, thereby enhancing the overall cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an overall diagram of a laser marking device for a frequency converter proposed by the present invention.

[0019] Figure 2 The present invention provides a schematic structural diagram of a guide return mechanism in a frequency converter laser marking device.

[0020] Figure 3 The present invention provides a schematic structural diagram of a hollow disc in a laser marking device for a frequency converter.

[0021] Figure 4 This is a schematic diagram of a partial explosion structure of a laser marking device for a frequency converter proposed by the present invention.

[0022] Figure 5 The present invention provides a schematic diagram of the cross-sectional structure of an end portion of a rotating drum in a laser marking device for a frequency converter.

[0023] Figure 6 The figure is a schematic diagram of the side structure of a rotating drum in a laser marking device for a frequency converter proposed by the present invention.

[0024] Figure 7 The present invention provides a schematic structural diagram of an auxiliary jetting component in a laser marking device for a frequency converter.

[0025] Figure 8 The present invention provides a schematic cross-sectional structural diagram of a scraper in a laser marking device for a frequency converter.

[0026] Fig. 9 for Figure 6 Schematic diagram of some structures in .

[0027] In the figure: 1. Partition conveyor; 2. Guide return mechanism; 21. Guide rod; 211. Guide groove; 22. Return spring; 23. Moving block; 24. Slip ring; 25. Guide rod; 3. Marking head; 4. Pressing transmission mechanism; 41. Rotating ring; 42. Hollow disc; 43. Connecting column; 44. Connecting frame; 45. Laying plate; 46. Rolling element; 47. Guide plate; 48. Internal gear ring; 5. Cleaning mechanism; 51. Rotating drum; 52. Rotating tube; 5201. Through port; 53. Scraper; 531. Connecting port; 532. Air suction hole; 533. Through hole; 534. Inlet; 54. First spring; 55. Sleeve rod; 56. Connecting block; 57. Rotating joint; 58. Exhaust fan; 59. Driven gear; 510. Transmission gear; 511. Rotating shaft; 512. Sleeve frame; 513. Moving plate; 514. Right-angle plate; 515. Second spring; 516. Mounting frame; 517. Rotating rod; 518. Reel; 519. Pull rope; 520. Rack; 521. Rotating gear; 522. Stabilizing rod; 6. Frequency converter. DETAILED DESCRIPTION

[0028] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that the discussion of these implementations is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Various examples may omit, replace, or add various processes or components as needed. In addition, the features described in some examples may also be combined in other examples.

[0029] like Figure 1 As shown, a laser marking device for a frequency converter according to an embodiment of the present invention comprises a partition conveyor 1, and the partition conveyor 1 is connected to a marking head 3 through a guide return mechanism 2; The marking head 3 is connected with a pressing transmission mechanism 4, which includes a rotating ring 41, and the rotating ring 41 is coupled with a cleaning mechanism 5; A frequency converter 6 is placed on the partition conveyor 1 near the partition, and the frequency converter 6 has a marking area; Driven by the partition conveyor 1, the frequency converter 6 moves to the position of the pressing transmission mechanism 4 and presses against the swivel 41. The pressing action drives the marking head 3 to slide along the guide return mechanism 2 so that the height difference between the marking head 3 and the frequency converter 6 remains constant. During the pressing transmission process between the frequency converter 6 and the swivel 41, the cleaning mechanism 5 cleans the marking area of ​​the frequency converter 6, so that the marking head 3 can perform a clear marking operation on the frequency converter 6.

[0030] The partition conveyor 1 is responsible for conveying the frequency converter 6. During the conveying process, when the frequency converter 6 moves to the position of the pressing transmission mechanism 4 and presses against the swivel 41, the guide return mechanism 2 and the pressing transmission mechanism 4 work together, and the force generated by the pressing is transmitted to the marking head 3 through the pressing transmission mechanism 4, prompting the marking head 3 to slide along the guide return mechanism 2. This setting can automatically adjust the position of the marking head 3 according to the height of the frequency converter 6, so that the height difference between the marking head 3 and the frequency converter 6 is always constant, avoiding frequent manual adjustment of the height of the marking head 3, and greatly improving the marking efficiency. At the same time, during the pressing transmission, the swivel 41 drives the cleaning mechanism 5 to operate, and the cleaning mechanism 5 can effectively remove dust, impurities, etc. on the surface of the marking area of ​​the frequency converter 6, thereby ensuring that the marking head 3 can perform clear marking operations on the frequency converter 6, significantly improving the marking quality.

[0031] Reference Figure 1 and Figure 2Specifically, the guide return mechanism 2 includes a guide rod 21, a return spring 22, a moving block 23 and a slip ring 24. The slip ring 24 is slidably sleeved on the guide rod 21. A guide groove 211 is provided on the guide rod 21. The moving block 23 is slidably set inside the guide groove 211 and is fixedly connected to the slip ring 24. The return spring 22 is located inside the guide groove 211. One end of the return spring 22 is fixedly connected to the moving block 23, and the other end is connected to the inner top wall of the guide groove 211.

[0032] The guide rod 21 builds a sliding track for the slip ring 24 and the moving block 23 connected thereto, ensuring that the marking head 3 remains stable during the movement. The return spring 22 is connected to the moving block 23, and the other end is connected to the inner top wall of the guide groove 211, playing a key elastic adjustment role in the marking operation. When the marking head 3 is subjected to downward pressure due to the pressure of the inverter 6 against the rotating ring 41 and slides accordingly, the return spring 22 is compressed, and the external force is converted into elastic potential energy and stored. Once the pressure disappears, the return spring 22 releases the stored elastic potential energy. The movable block 23 and the slip ring 24 can generate a downward thrust, pushing the movable block 23 and the slip ring 24 to move downward, thereby driving the marking head 3 back to the initial position to prepare for the next marking. At the same time, the movable block 23 slides in the guide groove 211 and is fixedly connected to the slip ring 24, effectively preventing the slip ring 24 from rotating on the guide rod 21, so that the marking head 3 can only move up and down along the guide rod 21. This series of structural designs work together to not only make the movement of the marking head 3 stable and smooth, but also realize the automatic reset function, which greatly facilitates the continuous marking operation.

[0033] Furthermore, a guide rod 25 is installed inside the guide groove 211 , and one end of the guide rod 25 slides through the moving block 23 and the return spring 22 .

[0034] The guide rod 25 installed inside the guide groove 211 slides through the moving block 23 and the return spring 22 at one end, and plays a key role in the operation of the entire device. The guide rod 25 further limits the movement trajectory of the moving block 23, so that the moving block 23 can only slide in the guide groove 211 along the direction of the guide rod 25, which greatly enhances the stability of the moving block 23 when sliding and effectively avoids its deviation during movement. Since the marking head 3 is closely related to the moving block 23, this design ensures that the marking head 3 can be accurately adjusted according to the height of the inverter 6, thereby improving the accuracy of the height adjustment of the marking head 3 and ensuring the accuracy of the marking position.

[0035] Reference Figure 1 , Figure 3 and Figure 4Specifically, the pressing transmission mechanism 4 also includes a hollow disc 42, a connecting column 43 and a connecting frame 44. The connecting column 43 is installed in the middle of the hollow disc 42. The swivel 41 is rotatably sleeved in the middle of the outer circumference of the hollow disc 42. The hollow disc 42 is connected to the marking head 3 through the connecting frame 44. A mounting plate 45 is installed on the outer circumference of the hollow disc 42. A rolling member 46 is rotatably provided at the bottom of the mounting plate 45. The rolling member 46 is a ball or a roller. The rolling member 46 is rotatably sleeved at the bottom of the mounting plate 45, and the bottom surface of the rolling member 46 is flush with the bottom surface of the swivel 41.

[0036] It should be noted that the connecting column 43 installed in the middle of the hollow disc 42 provides a stable fixing and supporting foundation for the hollow disc 42 structure, and the swivel 41 is rotatably sleeved in the middle of the outer circumference of the hollow disc 42. When the inverter 6 is placed on the mounting plate 45 and pressed against the swivel 41, the swivel 41 can flexibly rotate on the hollow disc 42. The hollow disc 42 is connected to the marking head 3 through the connecting frame 44. In this way, the pressing force exerted on the swivel 41 can be smoothly transmitted to the marking head 3, so that the marking head 3 can be automatically adjusted according to the height of the inverter 6. The setting of the mounting plate 45 is convenient. After the inverter 6 is released from contact with the swivel 41, the rolling element 46 continues to contact with the inverter 6 to stabilize the distance between the inverter 6 and the marking head 3, so that when the inverter 6 is located below the marking head 3, the inverter 6 and the marking head 3 are also equidistant. The rolling element 46 is arranged at the bottom of the mounting plate 45, which effectively reduces the friction generated by the inverter 6 when moving on the mounting plate 45, making the conveying process of the inverter 6 smoother and unobstructed. This series of designs work together to not only make the pressure transmission process more stable and reliable, but also greatly facilitate the placement and transportation of the inverter 6, and significantly improve the fluency of the marking process.

[0037] Furthermore, the outer circumference of the rotating ring 41 is provided with anti-slip grooves to increase the stability of contact with the inverter 6 .

[0038] A guide plate 47 is installed on the feeding side of the hollow disc 42 , and one end of the guide plate 47 away from the hollow disc 42 is arranged to be inclined upward so as to be in contact with the frequency converter 6 in advance.

[0039] It should be noted that the guide plate 47 located on the feeding side of the hollow disc 42 has an end that is inclined upward away from the hollow disc 42. In the entire marking process, when the frequency converter 6 is transported by the partition conveyor 1 and gradually approaches the pressing transmission mechanism 4, the guide plate 47 first contacts the frequency converter 6, guides the frequency converter 6 to move and press against the swivel 41, and ensures that the pressing transmission process can proceed smoothly.

[0040] according to Figure 4-Figure 9The cleaning mechanism 5 includes a rotating drum 51, a rotating tube 52, a scraper 53, a first spring 54, a sleeve rod 55 and a connecting block 56. The rotating tube 52 is rotatably sleeved on the bottom of the hollow disc 42. One end of the rotating tube 52 is connected to an exhaust fan 58 through a rotating joint 57. The rotating tube 52 is in transmission cooperation with the rotating ring 41. A through hole 5201 is provided on the rotating tube 52. The rotating drum 51 is fixedly sleeved on the rotating tube 52. The scraper 53 is slidably sleeved on the rotating drum 51. The interior of the scraper 53 is hollow. The scraper 53 A connecting port 531 is provided inside the rotating drum 51, and one side of the scraper 53 extending out of the rotating drum 51 is inclined and provided with an air suction hole 532. A connecting block 56 is installed on the scraper 53, and one end of the sleeve rod 55 slides through the connecting block 56, and the other end slides through the first spring 54 and is fixedly connected to the rotating tube 52. One end of the first spring 54 is fixedly connected to the connecting block 56, and the other end is fixedly connected to the rotating tube 52. The scraper 53 is connected to an auxiliary jet component for jetting the inverter 6.

[0041] It should be noted that the rotating tube 52 is rotatably sleeved on the bottom of the hollow disc 42 and forms a transmission match with the rotating ring 41. When the rotating ring 41 rotates due to the pressure of the frequency converter 6, it will drive the rotating tube 52 to rotate. One end of the rotating tube 52 is connected to the exhaust fan 58 by means of a rotating joint 57. The through port 5201 on it is connected to the rotating drum 51. The scraper 53 is slidably sleeved on the rotating drum 51. It is hollow inside and is connected to the rotating tube 52 through the connecting port 531. The suction hole 532 on the scraper 53 can absorb the marking area of ​​the frequency converter 6 during the rotation process. The sleeve rod 55 and the first spring 54 provide support and elastic adjustment functions for the scraper 53. When the scraper 53 contacts different positions on the surface of the inverter 6, the first spring 54 will compress or extend according to the actual situation to ensure that the scraper 53 contacts the surface of the inverter 6 to achieve a better cleaning effect. In addition, after the auxiliary jet component completes the cleaning work of absorbing impurities, it will perform a jet operation on the marking area to further remove residual impurities. The coordinated work can not only effectively clean the impurities in the marking area, but also ensure the marking quality.

[0042] Furthermore, a driven gear 59 is fixedly mounted on the outer periphery of the rotating tube 52 , and an inner gear ring 48 is mounted inside the rotating ring 41 . The inner gear ring 48 is driven by the driven gear 59 through a transmission gear 510 , and the transmission gear 510 is rotationally connected to the hollow disc 42 through a rotating shaft 511 .

[0043] It should be noted that in the laser marking device, the outer periphery of the rotating tube 52 is fixedly mounted with a driven gear 59, and the interior of the rotating ring 41 is mounted with an internal gear ring 48, and the two are connected by a transmission gear 510. When the rotating ring 41 rotates under the pressure of the frequency converter 6, the internal gear ring 48 closely connected thereto will also rotate accordingly. The rotation of the internal gear ring 48 transmits power through the transmission gear 510, driving the driven gear 59 to rotate. Since the driven gear 59 is fixedly mounted on the rotating tube 52, the rotation of the driven gear 59 causes the rotating tube 52 to rotate, so that the scraper 53 rotates in the opposite direction to the rotating ring 41, so as to increase the cleaning effect of the frequency converter 6.

[0044] The auxiliary jetting member includes a plurality of sleeve frames 512 installed on the inner periphery of the rotating drum 51, the scraper 53 passes through the sleeve frames 512 and is slidably sleeved with a moving plate 513, the interior of the sleeve frames 512 is slidably sleeved with the moving plate 513, the moving plate 513 is slidably sleeved with the sleeve frames 512, a right-angle plate 514 is installed on the sleeve frames 512, the right-angle plate 514 is connected to the moving plate 513 through a second spring 515, the interior of the scraper 53 is divided into a first chamber and a second chamber by the second spring 515, and the scraper 53 is respectively provided with a first chamber connected to the second chamber. The through hole 533 and the inlet 534 are provided, and a mounting frame 516 is installed on the sleeve frame 512. The mounting frame 516 is rotatably connected to a reel 518 through a rotating rod 517. The reel 518 is connected to the movable plate 513 through a pull rope 519. The diameter of the reel 518 is larger than the diameter of the rotating rod 517, so that when the reel 518 winds the pull rope 519, the moving distance of the movable plate 513 is greater than the distance of the scraper 53. A rack 520 is installed on the top of the scraper 53, and a rotating gear 521 that is driven by the rack 520 is fixedly mounted on the rotating rod 517.

[0045] It should be noted that during the operation of the auxiliary jet component, the sleeve frame 512 is installed on the inner circumference of the rotating drum 51, the movable plate 513 can slide in the sleeve frame 512, and the right-angle plate 514 is connected to the movable plate 513 by means of the second spring 515. When the scraper 53 rotates together with the rotating drum 51, the rack 520 on the scraper 53 and the rotating gear 521 are meshed with each other for transmission. This transmission action drives the rotating rod 517 to rotate, and the rotating rod 517 drives the reel 518 to rotate synchronously. When the reel 518 rotates, the movable plate 513 is pulled by the pull rope 519 to generate displacement in the sleeve frame 512. During the movement of the movable plate 513, the second spring 515 is compressed, and the interior of the scraper 53 is divided into a first chamber and a second chamber by the second spring 515. The second chamber has a through hole 533 and an inlet 534 provided thereon, which provide a channel for gas circulation. As the movable plate 513 moves, the air pressure in the second chamber and the sleeve frame 512 becomes lower, and the external air enters the interior of the sleeve frame 512 through the through hole 533 and the inlet 534. When the scraper 53 continues to rotate and gradually releases the contact with the inverter 6, the movable plate 513 is restored by the second spring 515 and moves toward the inner wall of the rotating drum 51 to squeeze the air inside the sleeve frame 512. The air enters the second chamber through the inlet 534 and is ejected from the through hole 533 to act on the marking area of ​​the inverter 6, thereby realizing the jet operation on the marking area, blowing up the residual impurities, and sucking them up through the suction hole 532 at the subsequent scraper 53, thereby increasing the cleaning effect.

[0046] A stabilizing rod 522 is slidably sleeved on the right-angle plate 514 . One end of the stabilizing rod 522 slides through the second spring 515 and is connected to the moving plate 513 .

[0047] It should be noted that the stabilizing rod 522 plays a stabilizing role in the auxiliary jet component. It is slidably sleeved on the right-angle plate 514, and one end slides through the second spring 515 and is connected to the movable plate 513. When the movable plate 513 slides in the sleeve frame 512 to realize the jet operation, the stabilizing rod 522 guides the movement direction of the movable plate 513, so that the movable plate 513 is unlikely to shake or deviate during the sliding process, thereby ensuring its stability in sliding in the sleeve frame 512.

[0048] Working principle: First, place the inverter 6 on the partition conveyor 1, and the partition conveyor 1 drives the inverter 6 to move. When the inverter 6 approaches the pressing transmission mechanism 4, the guide plate 47 guides the inverter 6 to press against the swivel 41. The pressing of the inverter 6 causes the swivel 41 to rotate. The swivel 41 drives the driven gear 59 to rotate through the inner gear ring 48 and the transmission gear 510, thereby causing the rotating tube 52 to rotate. The rotating tube 52 drives the rotating drum 51 and the scraper 53 to rotate. At the same time, the pressing of the swivel 41 is transmitted to the marking head 3 through the pressing transmission mechanism 4, causing the marking head 3 to slide along the guide rod 21 of the guide return mechanism 2 and return. The spring 22 and the guide rod 25 ensure that the marking head 3 moves stably and can automatically reset, ensuring that the height difference between the marking head 3 and the inverter 6 is constant. During the rotation of the drum 51 and the scraper 53, the exhaust fan 58 absorbs dust and other impurities in the marking area through the connecting port 531, the first chamber, and the suction hole 532 of the rotating tube 52 and the scraper 53. When the scraper 53 rotates, the rack 520 on it drives the rotating gear 521 to drive the rotating rod 517 and the reel 518 to rotate. The reel 518 pulls the moving plate 513 to move in the sleeve frame 512 through the pull rope 519, changing the air pressure in the second chamber inside the scraper 53 ( Figure 6 The movement directions of the inverter 6 and the drum 51 are marked respectively. When the scraper 53 continuously scrapes the inverter 6 and enters the inside of the drum 51, the inverter 6 area on the left side of the scraper 53 is the cleaned area. At this time, the external air enters the inside of the sleeve frame 512 through the through hole 533), and the marking area is sprayed through the through hole 533 to further clean the residual impurities. Finally, the marking head 3 performs a clear marking operation on the marking area of ​​the inverter 6 while maintaining a suitable height difference with the inverter 6.

[0049] The above describes an embodiment of the present invention, but this embodiment is not limited to the above specific implementation methods. The above specific implementation methods are merely illustrative and not restrictive. Under the guidance of this embodiment, ordinary technicians in this field can also make many forms, all of which are protected by this embodiment.

Claims

1. A laser marking device for a frequency converter, comprising a partition conveyor (1), characterized in that: The partition conveyor (1) is connected to a marking head (3) via a guide return mechanism (2); The marking head (3) is connected to a pressing transmission mechanism (4), the pressing transmission mechanism (4) comprises a rotating ring (41), and the rotating ring (41) is transmission-coordinated with a cleaning mechanism (5); A frequency converter (6) is placed on the partition conveyor (1) near the partition, and the frequency converter (6) has a marking area; The frequency converter (6) is driven by the partition conveyor (1) to move to the position of the pressing transmission mechanism (4) and presses against the rotating ring (41). The pressing action drives the marking head (3) to slide along the guide return mechanism (2), so that the height difference between the marking head (3) and the frequency converter (6) remains constant. During the pressing transmission process between the frequency converter (6) and the rotating ring (41), the cleaning mechanism (5) cleans the marking area of ​​the frequency converter (6), so that the marking head (3) performs a clear marking operation on the frequency converter (6).

2. The laser marking device for a frequency converter according to claim 1, characterized in that: The guide return mechanism (2) comprises a guide rod (21), a return spring (22), a moving block (23) and a slip ring (24); the slip ring (24) is slidably sleeved on the guide rod (21); a guide groove (211) is provided on the guide rod (21); the moving block (23) is slidably arranged inside the guide groove (211) and is fixedly connected to the slip ring (24); the return spring (22) is located inside the guide groove (211); one end of the return spring (22) is fixedly connected to the moving block (23) and the other end is connected to the inner top wall of the guide groove (211).

3. The laser marking device for a frequency converter according to claim 2, characterized in that: A guide rod (25) is installed inside the guide groove (211), and one end of the guide rod (25) slides through the moving block (23) and the return spring (22).

4. The laser marking device for a frequency converter according to claim 3, characterized in that: The pressing transmission mechanism (4) further comprises a hollow disc (42), a connecting column (43) and a connecting frame (44); the connecting column (43) is mounted in the middle of the hollow disc (42); the rotating ring (41) is rotatably sleeved on the middle of the outer circumference of the hollow disc (42); the hollow disc (42) is connected to the marking head (3) via the connecting frame (44); a mounting plate (45) is mounted on the outer circumference of the hollow disc (42); a rolling element (46) is rotatably provided at the bottom of the mounting plate (45).

5. The laser marking device for a frequency converter according to claim 4, characterized in that: A guide plate (47) is installed on the feeding side of the hollow disc (42), and one end of the guide plate (47) away from the hollow disc (42) is arranged to be inclined upward so as to be in contact with the frequency converter (6) in advance.

6. The laser marking device for a frequency converter according to claim 5, characterized in that: The cleaning mechanism (5) comprises a rotating drum (51), a rotating tube (52), a scraper (53), a first spring (54), a sleeve rod (55) and a connecting block (56); the rotating tube (52) is rotatably sleeved on the bottom of the hollow disc (42); one end of the rotating tube (52) is connected to an exhaust fan (58) via a rotating joint (57); the rotating tube (52) is in transmission cooperation with a rotating ring (41); a through opening (5201) is provided on the rotating tube (52); the rotating drum (51) is fixedly sleeved on the rotating tube (52); the scraper (53) is slidably sleeved on the rotating drum (51); the interior of the scraper (53) is hollow; The scraper (53) is provided with a communication port (531) at a location inside the rotating drum (51); one side of the scraper (53) extending outside the rotating drum (51) is inclined and provided with an air suction hole (532); the connecting block (56) is mounted on the scraper (53); one end of the sleeve rod (55) slides through the connecting block (56); the other end slides through the first spring (54) and is fixedly connected to the rotating tube (52); one end of the first spring (54) is fixedly connected to the connecting block (56); the other end is fixedly connected to the rotating tube (52); the scraper (53) is connected to an auxiliary jetting component for jetting air to the frequency converter (6).

7. The laser marking device for a frequency converter according to claim 6, characterized in that: A driven gear (59) is fixedly sleeved on the outer periphery of the rotating tube (52), an inner gear ring (48) is sleeved on the interior of the rotating ring (41), the inner gear ring (48) is driven by the driven gear (59) via a transmission gear (510), and the transmission gear (510) is rotationally connected to the hollow disc (42) via a rotating shaft (511).

8. The laser marking device for a frequency converter according to claim 7, characterized in that: The auxiliary jet component comprises a plurality of sleeve frames (512) mounted on the inner circumference of the drum (51); the scraper (53) passes through the sleeve frames (512) and is slidably sleeved with a moving plate (513); the interior of the sleeve frames (512) is slidably sleeved with the moving plate (513); the moving plate (513) is slidably sleeved with the sleeve frames (512); a right-angle plate (514) is mounted on the sleeve frames (512); the right-angle plate (514) is connected to the moving plate (513) via a second spring (515); the interior of the scraper (53) is divided into a plurality of sleeve frames (512) and a plurality of sleeve frames (512); and the plurality of sleeve frames (512) are connected to the moving plate (513) via a second spring (515). The scraper (53) is divided into a first chamber and a second chamber. A through hole (533) and an inlet (534) communicating with the second chamber are respectively provided on the scraper (53). A mounting frame (516) is installed on the sleeve frame (512). The mounting frame (516) is rotatably connected to a reel (518) via a rotating rod (517). The reel (518) is connected to the movable plate (513) via a pull rope (519). A rack (520) is installed on the top of the scraper (53). A rotating gear (521) that is driven by the rack (520) is fixedly mounted on the rotating rod (517).

9. The laser marking device for a frequency converter according to claim 8, characterized in that: A stabilizing rod (522) is slidably sleeved on the right-angle plate (514), and one end of the stabilizing rod (522) slides through the second spring (515) and is connected to the moving plate (513).

10. The laser marking device for a frequency converter according to claim 9, characterized in that: The outer periphery of the rotating ring (41) is provided with anti-slip grooves.

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