Label-less marking facility

Abstract

To provide a label-less marking facility in a technical field of a label printing device of a packaging bottle.SOLUTION: The label-less marking facility includes a frame, a disk-shaped conveying module, a laser marking module 4, and a first driving module, wherein the disk-shaped conveying module is connected to each of a supply device and an ejection device, and packaging bottles enter the disk-shaped conveying module through the supply device, and after label printing is completed on the disk-shaped conveying module, the packaging bottles return to a conveyor through the ejection device, and the laser marking module includes a plurality of laser heads 41 so that the plurality of laser heads are distributed along a circumference of the disk-shaped conveying module and are provided on the disk-shaped conveying module so as to mark the packaging bottles at a corresponding position while moving along the disk-shaped conveying module, and an output end of the first driving module is connected to the disk-shaped conveying module, and is capable of moving and rotating the disk-shaped conveying module.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to the technical field of labeling printing devices for packaging bottles, and specifically to label-free marking equipment.

Background Art

[0002] Currently, a label (with labels such as numbers, letters, LOGO, name, QR code (registered trademark), barcode, DM code, information logo, etc.) using an adhesive is provided at the center of the existing packaging bottle body. Although the current packaging bottle body is recycled after use, when recycling, it is necessary to peel off the label on the packaging bottle body and invest a large amount of manpower and material resources. On the other hand, when the label is peeled off, label adhesive remains on the bottle body, harmful substances are generated during processing, and its role in energy conservation and environmental protection is small.

[0003] In order to meet the development concept of low-carbon and environmental protection, the concept of "label-free PET bottle" has emerged in the past two years, and several large enterprises have started planning in advance to respond to energy conservation and low-carbon. That is, instead of pasting a label with the brand logo and product-related information on the bottle body, the label is marked on the bottle using laser printer technology, so that the use of plastic in the production process can be reduced by removing the label, the recycling materials can be simplified, and the recycling process can be reduced. However, existing label-free PET bottles can only mark a small amount of content on the bottle body with laser equipment, and complete product information can only be marked on the outer packaging box. Therefore, single-bottle sales are not possible, the sales route is restricted, and it cannot meet the large-scale and high-production-capacity production demand.

[0004] The patent application documents with the publication number CN116967618A disclose label - less packaging bottle automatic production equipment. The equipment includes a frame, on which a bottle body conveying device and a bottle body marking device are installed. The bottle body marking device includes a rotating shaft provided on the frame and a driving ring disk fixed coaxially with the rotating shaft. A driving mechanism for driving the rotation of the rotating shaft is provided on the frame. A plurality of storage trays are rotatably provided on the top of the driving ring disk. The plurality of storage trays are distributed in a circumferential array along the circumferential direction of the driving ring disk. A rotation motor for driving the rotation of each storage tray is provided at the bottom of the driving ring disk. A driven ring disk is coaxially fixed to the rotating shaft, and a downward pressing assembly corresponding to the storage tray is provided on the driven ring disk. A plurality of laser heads for bottle body marking are provided on the frame. However, the equipment has the following drawbacks: 1) The laser head for marking does not move together with the driving ring disk. Since it is provided on the frame, the rotation speed of the driving ring disk is not too fast, resulting in a significant reduction in the overall marking efficiency. 2) While the laser head is marking the bottle body, the rotation of the driving ring disk makes the marked logo easily deformed slightly, and the effect of hitting the logo is not good. 3) The downward pressing assembly presses and releases the bottle body in a cylinder - driving manner, and faults are likely to occur as the usage time increases, and the cost of adopting cylinder driving is high. Therefore, further iterative upgrades are needed.

Summary of the Invention

Means for Solving the Problems

[0005] To solve the above problems, the present invention provides label - less marking equipment, which is connected to an external conveying device including a conveyor, a supply device and a discharge device. Furthermore, it has a frame, It has a disc-shaped conveying module, which is connected to a supply device and a discharge device respectively. The packaging bottle enters the disc-shaped conveying module through the supply device, and after the label printing is completed on the disc-shaped conveying module, it returns to the conveyor through the discharge device. It has a laser marking module, which includes a plurality of laser heads. The plurality of laser heads are distributed along the circumference of the disc-shaped conveying module and are provided on the disc-shaped conveying module. While moving along with the disc-shaped conveying module, it can mark the packaging bottle at the corresponding position. It has a first driving module, and the output end of the first driving module is connected to the disc-shaped conveying module, and it is possible to move and rotate the disc-shaped conveying module.

[0006] Specifically, the disc-shaped conveying module includes a first rotating shaft, a first cam disc, a pair of first fixed frames, a first driving rotating disc, a first driven disc, a plurality of first downward pressing mechanisms, and a plurality of storage trays. The first rotating shaft is connected to the output end of the first driving module. The first cam disc is fitted on the first rotating shaft but does not rotate along with the first rotating shaft, and a first cam rail is provided on the outer ring of the first cam disc. A pair of first fixed frames are provided on both sides of the first cam disc respectively and are connected to the first cam disc to fix the first cam disc. The first driven disc and the first driving rotating disc are sequentially fitted on the first rotating shaft and can rotate along with the first rotating shaft. A plurality of storage trays for placing the bottle body are provided on the first driving rotating disc. A first downward pressing mechanism corresponding to each of the plurality of storage trays is provided on the first driven disc. A first pulley is provided on one side of the first downward pressing mechanism and is slidably connected to the first cam disc through the first cam rail. In order to compress or loosen the bottle body, it can move up and down while moving in a circular motion along the first cam disc.

[0007] Furthermore, a rotary motor is correspondingly provided under each storage tray, and the rotary motor can move and rotate the corresponding storage tray.

[0008] Furthermore, the first downward pressing mechanism includes a first downward pressing assembly and a pair of first guide levers. The pair of first guide levers are provided on the first driven disk. The first downward pressing assembly is fitted into a pair of first guide bars and is slidable along the pair of first guide bars. The first pulley is provided on one side of the first downward pressing assembly and is slidably connected to the first cam disk via a first cam rail, and can move up and down while moving in a circular motion along the first cam disk.

[0009] Furthermore, the first downward pressing mechanism includes a pair of first springs and a pair of circlips. The pair of first springs are respectively fitted into the pair of first guide bars. The pair of circlips respectively correspond to the pair of first springs, are provided at the lower ends of the corresponding pair of first springs, and are fixedly connected to the first guide levers. The first spring is provided between the first downward pressing assembly and the circlip.

[0010] Furthermore, the first downward pressing assembly includes a first slide frame, a first downward pressing rod, and a first downward pressing cover. The first slide frame is fitted into the pair of first guide bars, and the first pulley is provided on one side of the first slide frame. One end of the first downward pressing rod is connected to the first slide frame, and the other end is movably connected to the first downward pressing cover, and the first downward pressing cover can rotate around its own axis.

[0011] Furthermore, the first downward pressing mechanism further includes a first fixing plate provided at the upper ends of the pair of first guide bars and fixedly connected to the pair of first guide bars.

[0012] Furthermore, the laser marking module further includes a second cam disk, a plurality of lifting mechanisms, a second driven disk, and a plurality of laser head controllers. The second cam disk is fixedly connected to the first cam disk via a plurality of connecting columns, and a second cam rail is provided on the outer ring of the second cam disk. The second driven disk is fixedly connected to the first driven disk via a plurality of connecting columns and is movable in synchronization with the first driven disk. The plurality of lifting mechanisms are respectively connected to a plurality of laser heads one by one. A second pulley is provided on one side of each lifting mechanism. The second pulley is slidably connected to the second cam disk via the second cam rail and can move up and down while moving in a circular motion along the second cam disk. The plurality of laser head controllers respectively correspond to a plurality of laser heads one by one and are provided on the second driven disk.

[0013] Furthermore, the lifting mechanism includes a second slide frame and a pair of second guide levers. The second slide frame is fitted into a pair of second guide bars and is slidable with respect to the pair of second guide bars. The second pulley is provided on one side of the second slide frame and can operate the second slide frame. The pair of second guide bars are fixedly connected to the first driven disk.

[0014] Furthermore, the lifting mechanism includes a second fixing plate and a pair of second springs. The second fixing plate is provided at the upper ends of the pair of second guide bars and is fixedly connected to the pair of second guide bars. The pair of second springs are respectively provided at both ends of the second fixing plate. One end of the second spring is connected to the second fixing plate, and the other end is connected to the second slide frame.

[0015] Furthermore, a position adjustment mechanism is provided between the lifting mechanism and the corresponding laser head, and the position between the lifting mechanism and the corresponding laser head can be adjusted by the position adjustment mechanism.

[0016] Furthermore, the first drive module includes a first drive motor and a transmission gear group, and the first drive motor can drive the first rotating shaft, the supply device, and the discharge device through the transmission gear group to operate synchronously.

[0017] Furthermore, it further includes a first detection camera and a second detection camera. The first detection camera is provided on one side of the connection part between the supply device and the disk-shaped conveying module to detect whether the bottle body enters the disk-shaped conveying module. The second detection camera is provided on one side of the connection part between the discharge device and the disk-shaped conveying module to detect whether there is a related label on the bottle body.

Advantages of the Invention

[0018] Compared with the prior art, the beneficial effects of the present application are as follows: First, by moving synchronously with the disk-shaped conveying module, the marked label is clearer and the marking speed is faster. Second, by cooperating the lower pressing assembly with the first cam disk, mechanical transmission is adopted, which is less prone to failure and has a low cost. Third, by adopting a lifting mechanism, the laser head can follow better and the cost is low.

[0019] It should be understood that both the above general description and the following detailed description are exemplary and are intended to provide further explanation of the technology that needs to be protected.

Brief Description of the Drawings

[0020]

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Mode for Carrying Out the Invention

[0021] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings to explain the present invention in more detail.

[0022] First, the label - less marking equipment according to an embodiment of the present invention will be described with reference to FIGS. 1 to 13. It is used for marking the bottle body and has a wide range of application scenarios.

[0023] As shown in FIGS. 1 to 13, the embodiment of the present invention provides label - less marking equipment, which is connected to an external conveying device including a conveyor 11, a supply device 12 and a discharge device 13. Further, it has a frame 2, it has a disk - shaped conveying module 3. The disk - shaped conveying module 3 is connected to the supply device 12 and the discharge device 13 respectively. The packaging bottle enters the disk - shaped conveying module 3 through the supply device 12, and after the label printing is completed on the disk - shaped conveying module 3, it returns to the conveyor 11 through the discharge device 13. It has a laser marking module 4, and the laser marking module 4 includes a plurality of laser heads 41. The plurality of laser heads 41 are distributed along the circumference of the disc-shaped conveying module 3 and are provided on the disc-shaped conveying module 3. While moving along with the disc-shaped conveying module 3, it can mark the packaging bottles at corresponding positions, with good marking effect and high marking speed. It has a first driving module 5, and the output end of the first driving module 5 is connected to the disc-shaped conveying module 3, and it is possible to move and rotate the disc-shaped conveying module 3.

[0024] Specifically, as shown in FIGS. 2-3, 6-8, 10-13, in this embodiment, the disc-shaped conveying module 3 includes a first rotating shaft 31, a first cam disk 32, a pair of first fixed frames 33, a first driving rotating disk 34, a first driven disk 35, a plurality of first pressing mechanisms 36, and a plurality of storage trays 37. The first rotating shaft 31 is connected to the output end of the first driving module 5. The first cam disk 32 is fitted on the first rotating shaft 31 but does not rotate along with the first rotating shaft 31, and a first cam rail 321 is provided on the outer ring of the first cam disk 32. The pair of first fixed frames 33 are respectively provided on both sides of the first cam disk 32 and are connected to the first cam disk 32 to fix the first cam disk 32. The first driven disk 35 and the first driving rotating disk 34 are sequentially fitted on the first rotating shaft 31 and can rotate along with the first rotating shaft. A plurality of storage trays 37 for placing the bottle body are provided on the first driving rotating disk 34. On the first driven disk 35, a first downward pressing mechanism 36 corresponding to each of the plurality of storage trays 37 is provided. A first pulley 361 is provided on one side of the first downward pressing mechanism 36 and is slidably connected to the first cam disk 32 via the first cam rail 321. In order to compress or loosen the bottle body, it can move up and down while moving in a circular motion along the first cam disk 32. By the cooperation of the first downward pressing mechanism 36 and the first cam rail 321, the transmission effect is high and it is not easy to fail.

[0025] Furthermore, as shown in FIGS. 3 and 11, in this embodiment, a rotating motor 38 is correspondingly provided under each storage tray 37. The rotating motor 38 can move and rotate the corresponding storage tray 37, and during the marking of the laser head 41, the bottle body required for marking can be rotated according to the need.

[0026] Furthermore, as shown in FIGS. 8 and 9, in this embodiment, the first downward pressing mechanism 36 includes a first downward pressing assembly 362 and a pair of first guide levers 363. The pair of first guide levers 363 are provided on the first driven disk 35. The first downward pressing assembly 362 is fitted into the pair of first guide bars 363 and is slidable along the pair of first guide bars 363. The first pulley 361 is provided on one side of the first downward pressing assembly 363 and is slidably connected to the first cam disk 32 via the first cam rail 321, and can move up and down while moving in a circular motion along the first cam disk 32.

[0027] Furthermore, as shown in FIGS. 8 and 9, in this embodiment, the first downward pressing mechanism 36 includes a pair of first springs 364 and a pair of circlips 365. The pair of first springs 364 are respectively fitted into the pair of first guide bars 363. The pair of circlips 365 respectively correspond to the pair of first springs 364 one by one, are provided at the lower ends of the corresponding pair of first springs 364 respectively, and are fixedly connected to the first guide lever 363. The first spring 364 is provided between the first downward pressing assembly 362 and the circlip 365, and the first spring 364 is used to assist in buffering the first downward pressing assembly 362 and returning the first downward pressing assembly 362.

[0028] Furthermore, as shown in FIGS. 8 and 9, in this embodiment, the first downward pressing assembly 362 includes a first slide frame 3621, a first downward pressing rod 3622, and a first downward pressing cover 3623. The first slide frame 3621 is fitted into a pair of first guide bars 363, and the first pulley 361 is provided on one side of the first slide frame 3621. One end of the first downward pressing rod 3622 is connected to the first slide frame 3621, and the other end is movably connected to the first downward pressing cover 3623. The first downward pressing cover 3623 can rotate around its own axis, so that when the self-rotating motor 38 moves and rotates the storage tray 37, the bottle body can better follow.

[0029] Furthermore, as shown in FIGS. 8 and 9, in this embodiment, the first downward pressing mechanism 36 is provided at the upper ends of a pair of first guide bars 363 and further includes a first fixing plate 366 fixedly connected to the pair of first guide bars 363. While making the structure of the pair of first guide levers 363 more stable, it regulates the position of the first slide frame 3621.

[0030] Furthermore, as shown in FIGS. 1 to 5, in this embodiment, the laser marking module 4 further includes a second cam disk 42, a plurality of lifting mechanisms 43, a second driven disk 44, and a plurality of laser head controllers 45. The second cam disk 42 is fixedly connected to the first cam disk 32 through a plurality of connecting columns, and a second cam rail 421 is provided on the outer ring of the second cam disk 42. The second driven disk 44 is fixedly connected to the first driven disk 35 through a plurality of connecting columns and is movable in synchronization with the first driven disk 35. The plurality of lifting mechanisms 43 are respectively connected one by one to the plurality of laser heads 41. A second pulley 431 is provided on one side of each lifting mechanism 43. The second pulley 431 is slidably connected to the second cam disk 42 via the second cam rail 421 and can move up and down while moving in a circular motion along the second cam disk 42. The plurality of laser head controllers 45 respectively correspond to the plurality of laser heads 41 one by one and are provided on the second driven disk 44.

[0031] Furthermore, as shown in FIGS. 1 to 5, in this embodiment, the lifting mechanism 43 includes a second slide frame 432 and a pair of second guide levers 433. The second slide frame 432 is fitted into a pair of second guide bars 433 and is slidable with respect to the pair of second guide bars 433. The second pulley 431 is provided on one side of the second slide frame 432 and can operate the second slide frame 432. The pair of second guide bars 433 are fixedly connected to the first driven disk 35.

[0032] Furthermore, the lifting mechanism 43 includes a second fixing plate 434 and a pair of second springs 435. The second fixing plate 434 is provided at the upper ends of the pair of second guide bars 433 and is fixedly connected to the pair of second guide bars 433. While making the structure of the pair of second guide levers 433 more stable, it restricts the position of the second slide frame 432.

[0033] The pair of second springs 435 are respectively provided at both ends of the second fixing plate 434. One end of the second spring 435 is connected to the second fixing plate 434, and the other end is connected to the second slide frame 432. Providing the second spring 435 serves to buffer the second slide frame 432 and assist in the return of the second slide frame 432. On the other hand, by applying an upward tensile force to the second carriage 432, the pressure between the second pulley 431 and the upper wall of the second cam rail 421 becomes almost zero, significantly reducing the frictional force during movement between the second pulley 431 and the upper wall of the second cam rail 421.

[0034] Furthermore, as shown in FIG. 5, in this embodiment, a position adjusting mechanism 46 is provided between the lifting mechanism 43 and the corresponding laser head 41. By adjusting the position between the lifting mechanism 43 and the corresponding laser head 41 with the position adjusting mechanism 46, the laser head 41 can be set at an optimal marking position.

[0035] Furthermore, as shown in FIG. 10, in this embodiment, the first drive module 5 includes a first drive motor and a transmission gear group. The first drive motor can drive and synchronize the first rotating shaft 31, the supply device 12, and the discharge device 13 through the transmission gear group.

[0036] Furthermore, as shown in FIGS. 3 and 6, in this embodiment, it further includes a first detection camera 61 and a second detection camera 62. The first detection camera 62 is provided on one side of the connection portion between the supply device 12 and the disk-shaped conveying module 3 to detect whether the bottle body enters the disk-shaped conveying module 3. The second detection camera 62 is provided on one side of the connection portion between the discharge device 13 and the disk-shaped conveying module 3 to detect whether there is a relevant label on the bottle body.

[0037] Furthermore, as shown in FIG. 12, in this embodiment, the shape configurations of the first cam rail 321 and the second cam rail 421 are similar.

[0038] The operation principle is as follows. First, when the bolt body enters the storage tray 37 of the disc-shaped conveying module 3 from the supply device 12, the first pressing assembly 362 moves from the high position to the low position of the first cam rail 321 according to the first pulley 361. After pressing the bolt body with the first pressing cover 3623, the laser head 41 at the position corresponding to the bolt body starts marking the bolt body while moving from the high position to the low position of the second cam rail 421 according to the second pulley 431. After the bolt body is marked during movement, the first pressing assembly 362 moves from the low position to the high position of the first cam rail 321 according to the first pulley 361, and the laser head 41 at the corresponding position of the bolt body moves from the low position to the high position of the second cam rail 421 according to the second pulley 431. Then, the bolt body exits through the discharging device 13 and returns to the conveyor 11. The same applies to all bolts.

[0039] As described above, with reference to FIGS. 1 to 13, the label-free marking equipment according to the embodiments of the present invention is described. By synchronously moving the laser head with the disc-shaped conveying module, the marked signs are clearer and the marking speed is faster. By cooperating the pressing assembly with the first cam disk, mechanical transmission is adopted, which is less prone to failure and has a low cost. By adopting the lifting mechanism, the laser head can better follow, and moreover, the cost is low.

[0040] In addition, in this specification, the term "comprising", "including", or any other variation thereof is intended to include non-exclusive inclusion, such that a process, method, article, or device that includes a series of elements includes not only those elements but also other elements not explicitly listed, or also includes elements inherent to such a process, method, article, or device. Without further limitation, an element defined by the phrase "comprising" does not exclude the presence of another identical element in the process, method, article, or device that includes the element.

[0041] Although the content of the present invention has been described in detail by the above preferred embodiments, it should be recognized that the above description should not be regarded as a limitation to the present invention. After those skilled in the art read the above content, various modifications and alternatives of the present invention will become apparent. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims

1. A label-less marking equipment connected to an external conveying device having a conveyor, a feeding device and a discharging device, A frame is provided. a disk-shaped conveying module, the disk-shaped conveying module being connected to the supply device and the discharge device, the packaging bottles entering the disk-shaped conveying module through the supply device, and returning to the conveyor through the discharge device after the label printing is completed on the disk-shaped conveying module; A laser marking module is provided, the laser marking module includes a plurality of laser heads, the plurality of laser heads are distributed along the circumference of the disc-shaped conveying module, and are mounted on the disc-shaped conveying module, and can mark the packaging bottles at corresponding positions while moving along the disc-shaped conveying module; A first driving module is provided, the output end of the first driving module is connected to the disk-shaped transport module, and the disk-shaped transport module can be moved and rotated; The disk-shaped conveying module includes a first rotating shaft, a first cam disk, a pair of first fixed frames, a first driving rotating disk, a first driven disk, a plurality of first lower pressing mechanisms, and a plurality of storage trays; The first rotating shaft is connected to an output end of the first driving module; The first cam disc is fitted to the first rotating shaft but does not rotate along the first rotating shaft, and a first cam rail is provided on an outer ring of the first cam disc; The pair of first fixing frames are provided on both sides of the first cam disc, respectively, and are connected to the first cam disc to fix the first cam disc; The first driven disk and the first driving rotating disk are sequentially fitted to the first rotating shaft and can rotate along the first rotating shaft. The first driving rotating disk is provided with a plurality of storage trays for placing bottle bodies. The first driven disk is provided with a first downward pressing mechanism corresponding to each of the storage trays, and a first pulley is provided on one side of the first downward pressing mechanism, and the first pulley is slidably connected to the first cam disk via the first cam rail, and can move up and down while making a circular motion along the first cam disk to compress and release the bottle body; The laser marking module further includes a second cam disk, a plurality of lifting mechanisms, a second driven disk, and a plurality of laser head controllers; The second cam disc is fixedly connected to the first cam disc via a plurality of connecting posts, and a second cam rail is provided on an outer ring of the second cam disc; The second driven disk is fixedly connected to the first driven disk via a plurality of connecting columns and is movable synchronously with the first driven disk; the plurality of lifting mechanisms are connected to the plurality of laser heads one by one, and each lifting mechanism is provided with a second pulley on one side thereof, the second pulley is slidably connected to the second cam disc via the second cam rail, and is capable of vertical movement while making a circular movement along the second cam disc; the plurality of laser head controllers respectively corresponding to the plurality of laser heads, and are provided on the second driven disk; The lifting mechanism includes a second slide frame and a pair of second guide levers, the second slide frame is fitted to the pair of second guide bars and is slidable relative to the pair of second guide bars, the second pulley is provided on one side of the second slide frame and is capable of operating the second slide frame, the pair of second guide bars are fixedly connected to the first driven disk; the lifting mechanism includes a second fixed plate and a pair of second springs; The second fixed plate is provided at an upper end of the pair of second guide bars and is fixedly connected to the pair of second guide bars; A label-less marking equipment characterized in that the pair of second springs are respectively provided at both ends of the second fixed plate, one end of the second spring is connected to the second fixed plate, and the other end is connected to the second slide frame.

2. The first downward pressing mechanism includes a first downward pressing assembly and a pair of first guide levers. The pair of first guide levers are provided on the first driven disk, The first lower pressing assembly is fitted to the pair of first guide bars and is slidable along the pair of first guide bars; The label-less marking equipment according to claim 1, characterized in that the first pulley is provided on one side of the first lower pressing assembly, slidably connected to the first cam disc via the first cam rail, and is capable of moving up and down while moving circumferentially along the first cam disc.

3. The first downward pressing mechanism further includes a pair of first springs and a pair of circlips, The pair of first springs are fitted to the pair of first guide bars, respectively, The pair of circlips correspond to the pair of first springs one by one, are provided at the lower ends of the pair of first springs, and are fixedly connected to a first guide lever; 3. The label-less marking equipment according to claim 2, wherein the first spring is disposed between the first lower pressing assembly and the circlip.

4. The first downward pressing assembly includes a first slide frame, a first downward pressing rod, and a first downward pressing cover; The first slide frame is fitted to the pair of first guide bars, and the first pulley is provided on one side of the first slide frame, The labelless marking equipment described in claim 2 or claim 3, characterized in that one end of the first lower pressure rod is connected to the first slide frame and the other end is movably connected to the first lower pressure cover, and the first lower pressure cover is rotatable around its own axis.

5. The label-less marking equipment according to claim 2 or claim 3, characterized in that the first lower pressing mechanism further includes a first fixed plate provided at the upper end of the pair of first guide bars and fixedly connected to the pair of first guide bars.

6. The label-less marking equipment according to claim 1, characterized in that a position adjustment mechanism is provided between the lifting mechanism and the corresponding laser head, and the position between the lifting mechanism and the corresponding laser head can be adjusted by the position adjustment mechanism.

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