CN210587696U

CN210587696U - Laser adjusting component and laser cutting device

Info

Publication number: CN210587696U
Application number: CN201921351766.9U
Authority: CN
Inventors: 罗帆; 王庆丰; 吴星; 郑凯文; 张凯; 李惠亮; 周小亮; 吴华安
Original assignee: Shenzhen Tete Laser Technology Co Ltd
Current assignee: Shenzhen Tete Laser Technology Co Ltd
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2020-05-22
Anticipated expiration: 2029-08-15

Abstract

The utility model discloses a laser adjusting component and a laser cutting device, wherein the laser adjusting component comprises a height adjusting component, a laser generator and a leveling component, the height adjusting component comprises a bracket and a sliding platform, and the sliding platform is arranged on the bracket in a liftable way; the laser generator is mounted on the sliding platform; the leveling component is installed on the sliding platform and used for adjusting the laser generator so that the laser generator is in a relatively horizontal state. The utility model discloses technical scheme has eliminated laser generator and can't compromise the drawback of altitude mixture control and leveling through setting up altitude mixture control subassembly and leveling subassembly.

Description

Laser adjusting component and laser cutting device

Technical Field

The utility model relates to a laser cutting field, in particular to laser cutting device.

Background

Laser cutting is a cutting technique that uses the energy released when a laser beam irradiates the surface of a workpiece to melt or gasify the workpiece to achieve the purpose of cutting, and is widely applied because of its advantages of good cutting precision, high cutting speed, and the like. Generally, when a workpiece is cut by laser, after a laser beam irradiates the surface of the workpiece to melt or gasify the workpiece, an auxiliary gas or water flow is needed to take away chips at the cutting position, so that a cut is formed at the cutting position, and the purpose of cutting can be achieved.

When installing laser generator or changing different cutting work pieces, the working distance of laser needs to be adjusted, moreover, when requiring higher work piece to cutting accuracy, laser generator can not carry out horizontal adjustment, directly leads to the energy of laser in the workspace inconsistent, the quality of direct influence processing.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a laser cutting device aims at solving laser generator and can't compromise the problem of altitude mixture control and leveling.

In order to achieve the above object, the utility model provides a laser adjusting component, include:

the height adjusting assembly comprises a bracket and a sliding platform, and the sliding platform is arranged on the bracket in a liftable manner;

the laser generator is mounted on the sliding platform; and

the leveling assembly is installed on the sliding platform and used for adjusting the laser generator so that the laser generator is in a relatively horizontal state.

Optionally, the sliding platform is slidably mounted on the bracket up and down.

Optionally, the height adjusting assembly further comprises a transmission assembly and a driving device, wherein the transmission assembly is mounted on the bracket and connected with the sliding platform; the driving device is used for driving the sliding platform to slide in the up-and-down direction through the transmission assembly so as to enable the sliding platform to ascend or descend.

Optionally, the transmission assembly includes a screw rod and a screw nut, the screw rod is rotatably disposed on the bracket in an up-down direction, the screw rod is connected with the driving device, and the driving device is configured to drive the screw rod to rotate; the screw rod nut is sleeved on the screw rod through a threaded engagement, and the screw rod nut is connected with the sliding platform.

Optionally, the driving device comprises a hand wheel, and the hand wheel is connected with one end of the screw rod.

Optionally, the height adjusting assembly further comprises a locking assembly for locking the hand wheel and/or the screw rod; or, the height adjustment subassembly still including being used for locking the locking Assembly of lead screw, locking Assembly includes that the ring is established tighten the ring outside the lead screw and be used for with tighten the ring and hold tightly or loosen the locking screw of lead screw.

Optionally, a graduated scale is arranged on the outer surface of the support in the up-down direction, and an indicating needle is arranged on the sliding platform and points to the graduated scale.

Optionally, the leveling assembly comprises a plurality of leveling screws, the sliding platform is provided with a plurality of leveling screw holes, screw bolts of the leveling screws are arranged in the leveling screw holes, and the bottom surfaces of the screw bolts of the leveling screws are abutted to the bottom of the laser generator.

Optionally, leveling subassembly still includes a plurality of leveling locking screws and a plurality of lock nut, sliding platform with some leveling locking screw holes are seted up to laser generator's bottom plate, just leveling locking screw's screw bolt is located in the leveling locking screw hole, leveling locking screw passes through leveling locking nut will laser generator with sliding platform locks.

The utility model also provides a laser cutting device, which comprises a machine table and a laser adjusting component, wherein the machine table is provided with a table surface, and a bracket of the laser adjusting component is arranged on the table surface; the laser adjusting assembly comprises a height adjusting assembly, a laser generator and a leveling assembly, the height adjusting assembly comprises a bracket and a sliding platform, and the sliding platform is arranged on the bracket in a liftable manner; the laser generator is mounted on the sliding platform; the leveling component is installed on the sliding platform and used for adjusting the laser generator so that the laser generator is in a relatively horizontal state.

The utility model discloses technical scheme is through setting up altitude mixture control subassembly and leveling subassembly, and wherein, altitude mixture control subassembly includes support and sliding platform, and laser generator installs on sliding platform, through the rising or the decline of sliding platform on the support to adjust laser generator's high position, thereby adjust the working distance of laser. Meanwhile, the leveling component is installed on the sliding platform, and the laser generator is in a relatively horizontal state through the adjusting function of the leveling component. So, when adjusting laser generator position, both can carry out altitude mixture control, can carry out the regulation of relative horizontality again, on the one hand, laser generator 120 can carry out the focusing setting to the cutting of the work piece of adaptation to different materials or different thickness, on the other hand guarantees that the energy of laser in the workspace is unanimous, improves cutting accuracy, and then has eliminated laser generator and can't compromise the drawback of altitude mixture control and leveling.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of a laser adjustment assembly according to the present invention;

FIG. 2 is a bottom view of the laser adjustment assembly of FIG. 1;

fig. 3 is a schematic view of an internal structure of a bracket according to an embodiment of the laser adjustment assembly of the present invention;

FIG. 4 is a schematic view of the laser adjustment assembly of FIG. 1 from another perspective;

FIG. 5 is a front view of the laser adjustment assembly of FIG. 1;

fig. 6 is a schematic structural diagram of an embodiment of the laser cutting apparatus of the present invention;

FIG. 7 is another view of the laser cutting apparatus of FIG. 6;

fig. 8 is a top view of the laser cutting apparatus of fig. 6.

The reference numbers illustrate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if appearing throughout the text, "and/or" is meant to include three juxtaposed aspects, taking "A and/or B" as an example, including either the A aspect, or the B aspect, or both A and B satisfied aspects. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a laser adjusting part 100.

In the embodiment of the present invention, as shown in fig. 1 to 2, the laser adjusting assembly 100 includes a height adjusting assembly 110, a laser generator 120 and a leveling assembly 130, wherein the height adjusting assembly 110 includes a bracket 111 and a sliding platform 112, and the sliding platform 112 is liftably mounted on the bracket 111; the laser generator 120 is mounted on the sliding platform 112; the leveling assembly 130 is mounted to the sliding platform 112, and the leveling assembly 130 is used for adjusting the laser generator 120 so that the laser generator 120 is in a relatively horizontal state.

Generally, the laser adjusting assembly 100 is used for a laser cutting device 10, and specifically, the laser cutting device 10 includes a machine table 200, the machine table 200 has a table 210, and the support 111 is mounted on the table 210.

Specifically, the laser generator 120 may be a fiber laser, a carbon dioxide laser, or an ultraviolet laser, etc., according to the actual situation. The laser generated by the laser generator 120 is incident on two galvanometers (not shown) of the laser cutting device 10, respectively, the oscillation of one galvanometer enables the laser to scan back and forth along a first direction, and the oscillation of the other galvanometer enables the laser to scan back and forth along a second direction, so that a two-dimensional scanning plane can be formed in a composite manner, and the cutting of a workpiece can be realized.

Before cutting workpieces of different materials or different thicknesses, the height position of the laser generator 120 needs to be adjusted to perform focusing setting on the laser; meanwhile, in order to improve the laser cutting accuracy of the laser generator 120, the relative horizontal position of the laser generator 120 needs to be adjusted to ensure that the energy of the laser in the working area is consistent. It should be noted that the relative horizontal state is a horizontal state of the laser generator 120 relative to the workpiece to be cut, and is not an absolute horizontal state.

The embodiment of the utility model provides an in, install on support 111 with sliding platform 112 liftable, through the rising or the decline of adjusting sliding platform 112 to adjust the high position of installing laser generator 120 on sliding platform 112, with focusing to laser, with the cutting of the work piece of adaptation to different materials or different thickness. Moreover, the leveling component 130 is installed on the sliding platform 112, and the laser generator 120 is adjusted by the leveling component 130, so that the laser generator 120 is in a relatively horizontal state, the height direction and the relatively horizontal state of the laser generator 120 can be adjusted, the energy of the laser in a working area is consistent, and the laser cutting quality is improved.

The utility model discloses technical scheme is through setting up height adjustment subassembly 110 and leveling subassembly 130, and wherein, height adjustment subassembly 110 includes support 111 and sliding platform 112, and laser generator 120 installs on sliding platform 112, through the ascending or decline of sliding platform 112 on support 111, adjusts laser generator 120's high position to adjust the working distance of laser. Meanwhile, the leveling assembly 130 is mounted on the sliding platform 112, and the laser generator 120 is relatively level by the adjustment of the leveling assembly 130. Therefore, when the position of the laser generator 120 is adjusted, the height can be adjusted, and the relative horizontal state can be adjusted, so that on one hand, the laser generator 120 can be subjected to focusing setting to adapt to cutting of workpieces of different materials or different thicknesses; on the other hand, the energy of the laser in the working area is ensured to be consistent, the cutting precision is improved, and the defect that the laser generator 120 cannot give consideration to height adjustment and leveling is overcome.

Further, there are various ways in which the sliding platform 112 can be installed on the bracket 111 in a liftable manner, for example: the sliding platform 112 is slidably mounted on the bracket 111, and the sliding platform 112 slides up and down relative to the bracket 111 to adjust the ascending or descending of the sliding platform 112; the sliding platform 112 may be clamped to the bracket 111, and the sliding platform 112 may be adjusted to ascend or descend by adjusting a clamping position of the sliding platform 112 in the vertical direction of the bracket 111.

In some embodiments, as shown in fig. 1, the sliding platform 112 is slidably mounted on the bracket 111 up and down. The sliding platform 112 slides up and down on the bracket 111 to adjust the ascending or descending of the sliding platform 112, so that the height of the laser generator 120 is adjusted, the distance between the laser generator 120 and the cut workpiece is adjusted, the cut workpiece is positioned at the focus of laser emitted by the laser generator 120, and the laser cutting precision is ensured. The following description will be made in detail with reference to the embodiment in which the sliding platform 112 is slidably mounted on the bracket 111.

Specifically, in order to enable the sliding platform 112 to drive the laser generator 120 to slide smoothly, as shown in fig. 3, the height adjustment assembly 110 may include a guide rail 1133 and a slider 1134, wherein the guide rail 1133 is mounted on the bracket 111, extends in the up-down direction, and is disposed on one side of the lead screw 1131, the slider 1134 is slidably mounted on the guide rail 1133, and the slider 1134 is mounted on the sliding platform 112. The slide platform 112 slides up and down relative to the support 111 by the sliding of the slide 1134 and the guide rail 1133.

Further, the number of the guide rails 1133 may be plural, and the number of the sliders 1134 may be plural. In an embodiment, two guide rails 1133 and four sliders 1134 are provided, the sliders 1134 are installed on the sliding platform 112, the two guide rails 1133 extend in the up-down direction and are respectively installed on two sides of the lead screw 1131, and the two sliders 1134 are slidably installed on the same guide rail 1133.

Further, the height adjustment assembly 110 further includes a transmission assembly 113 and a driving device (not shown), wherein the transmission assembly 113 is mounted on the bracket 111 and connected to the sliding platform 112; the driving device is used for driving the sliding platform 112 to slide in the up-and-down direction through the transmission assembly 113, so that the sliding platform 112 ascends or descends.

Thus, the transmission assembly 113 is connected to the sliding platform 112, and when the driving device drives the transmission assembly 113 to slide upwards or downwards, the transmission assembly 113 drives the sliding platform 112 to ascend or descend, so as to adjust the height of the laser generator 120 mounted on the sliding platform 112.

Specifically, the transmission assembly 113 is structured as shown in fig. 3, the transmission assembly 113 includes a lead screw 1131 and a lead screw nut 1132, the lead screw 1131 is rotatably disposed on the bracket 111 in the up-down direction, the lead screw 1131 is connected with the driving device, and the driving device is configured to drive the lead screw 1131 to rotate; the lead screw nut 1132 is sleeved on the lead screw 1131 through a thread engagement, and the lead screw nut 1132 is connected with the sliding platform 112.

When the driving device drives the lead screw 1131 to rotate, the lead screw nut 1132 sleeved outside the lead screw 1131 is driven to reciprocate up and down by the rotation of the lead screw 1131, so as to drive the sliding platform 112 to perform lifting motion on the bracket 111, thereby achieving the purpose of adjusting the height of the laser generator 120.

Because the feed screw nut 1132 and the slider 1134 are both installed on the sliding platform 112, when the feed screw 1131 drives the feed screw nut 1132 to reciprocate along the up-down direction, the feed screw nut 1132 drives the slider 1134 to move up and down on the guide rail 1133 through the sliding platform 112. Under the effect of the guide rail 1133 and the slider 1134, the lead screw 1131 and the lead screw nut 1132 have a smaller burden on the laser generator 120, and the lead screw 1131 is not easy to deform, so that the laser generator 120 smoothly slides on the support screw 1131, and the sliding platform 112 is firmly installed on the bracket 111.

Further, when the driving screw 1131 rotates, the driving screw may be driven manually or by a motor. In some embodiments, rotation is by manually driving lead screw 1131; specifically, as shown in fig. 3, the driving device includes a handwheel 114, the handwheel 114 is connected to one end of the screw 1131, and the other end of the screw 1131 is rotatably connected to the bracket 111. Specifically, the handwheel 114 includes a wheel body and a handle fixedly connected to the wheel body, and the wheel body is connected to one end of the screw 1131.

The user drives the lead screw 1131 to rotate by manually rotating the hand wheel 114, and drives the lead screw nut 1132 to move in the up-and-down direction, so as to drive the sliding platform 112 to perform lifting movement, and adjust the height of the laser generator 120 to a suitable position. Thus, the screw 1131 can be rotated by the user by means of the rotation of the handwheel 114, which is beneficial for the user to adjust the height of the laser generator 120 quickly.

Further, in order to improve the stability and safety of the height adjustment assembly 110, the height adjustment assembly 110 further includes a locking assembly (not shown) for locking the hand wheel 114 and/or the lead screw 1131, so that the hand wheel 114 and/or the lead screw 1131 cannot rotate or rotate through the locking assembly, thereby achieving the purpose of locking the height of the laser generator 120.

Further, as shown in fig. 4, when the lead screw 1131 is locked, the height adjustment assembly 110 further includes a locking assembly 115 for locking the lead screw 1131, and the locking assembly 115 includes a tightening ring 1151 surrounding the lead screw 1131 and a locking screw 1152 for clasping or unclamping the tightening ring 1151 to the lead screw 1131.

By rotating the locking screw 1152, the diameter of the shrinkage cavity of the shrinkage ring 1151 is reduced or increased, so that the screw 1131 is clasped or loosened to make the screw 1131 rotatable or non-rotatable, thereby locking or adjusting the height of the laser generator 120. It is understood that the locking assembly 115 may be disposed at the upper end, the lower end or the middle of the lead screw 1131, and in view of the fact that the user may easily forget to lock the lead screw 1131, optionally, the locking assembly 115 is disposed at one end of the lead screw 1131 close to the handwheel 114, so that the user can easily lock the lead screw 1131 after adjusting the height of the laser generator 120 to a proper position through the handwheel 114.

Further, as shown in fig. 5, a graduated scale 116 is disposed on an outer surface of the bracket 111 in an up-down direction, a pointer 117 is disposed on the sliding platform 112, and the pointer 117 points at the graduated scale 116.

After the height position of the laser generator 120 is adjusted by a user, the numerical value of the graduated scale 116 pointed by the pointer 117 is recorded, and then when the same type of workpiece is cut, the height of the laser generator 120 can be conveniently and quickly adjusted by the user according to the recorded numerical value of the graduated scale 116, so that the working efficiency is improved.

Further, as shown in fig. 2, the leveling component 130 includes a plurality of leveling screws 131, the sliding platform 112 is provided with a plurality of leveling screw holes (not shown), screw rods of the leveling screws 131 are screwed into the leveling screw holes, and bottom surfaces of the screw rods of the leveling screws 131 are abutted against the bottom of the laser generator 120. It is understood that the plurality of leveling screws 131 may be uniformly or non-uniformly distributed at the bottom of the laser generator 120.

When a user rotates the leveling screw 131, the leveling screw 131 rotates in the leveling screw hole of the sliding platform 112, so that the sliding platform 112 and the laser generator 120 move relative to the leveling screw 131, the relative horizontal state of the laser generator 120 is adjustable, the relative horizontal position of the laser generator 120 and a cutting workpiece is adjusted, the cutting workpiece is positioned at the focus of laser emitted by the laser generator 120, and the laser cutting precision is further ensured.

Further, as shown in fig. 2, for improving the stability of the laser generator 120, the leveling assembly 130 further includes a plurality of leveling locking screws 132 and a plurality of locking nuts, the sliding platform 112 and the bottom plate of the laser generator 120 are provided with leveling locking screw holes, and the screw bolts of the leveling locking screws 132 are disposed in the leveling locking screw holes, and the leveling locking screws 132 pass through the leveling locking nuts will the laser generator 120 and the sliding platform 112 are locked.

When the laser generator 120 needs to be locked, the user locks the laser generator 120 and the sliding platform 112 by screwing the leveling locking nut on the leveling locking screw 132, so as to lock and fix the laser generator 120 in the adjusted relative horizontal state. The leveling assembly 130 has a simple structure, the relative horizontal state of the laser generator 120 is adjusted and locked simply, conveniently and quickly, and the laser generator 120 is locked firmly after being adjusted to be relatively horizontal.

Further, as shown in fig. 5, in order to improve the structural strength of the laser adjustment assembly 100 and prevent the deformation of the height adjustment assembly 110, a first reinforcing plate 118 and/or a second reinforcing plate 119 may be added as the case may be, and the first reinforcing plate 118 is fixed to the bracket 111 in the vertical direction of the bracket 111; and/or the second reinforcing plate 119 is fixed to the bottom of the sliding platform 112, thereby reinforcing the firmness of the bracket 111 and/or the sliding platform 112 and further improving the structural strength of the laser adjusting assembly 100.

As shown in fig. 6 to 8, the utility model discloses still provide a laser cutting device 10, this laser cutting device 10 includes board 200 and laser adjusting component 100, and the above-mentioned embodiment is referred to this laser adjusting component 100's concrete structure, because this laser cutting device 10 has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is not repeated here one by one. The machine 200 has a table 210, and the support 111 of the laser adjusting assembly 100 is mounted on the table 210.

Specifically, as shown in fig. 6 to 8, the laser cutting device 10 includes a frame 500, a machine table 200, a laser adjusting assembly 100, a positioning system 800, a scanning sensing system 300, a photographing system 700, and an optical path transmission system 600, wherein the machine table 200, the laser adjusting assembly 100, the positioning system 800, the scanning sensing system 300, the photographing system 700, and the optical path transmission system 600 are all disposed on the frame 500. Wherein, the machine platform 200 on the frame 500 is used for installing other spare parts of the laser cutting device 10, and an electric board, a control box and the like can be installed in the frame 500 as required.

As shown in fig. 6-7, the positioning system 800 includes a positioning assembly for positioning the sample card 400. The scanning sensing system 300 comprises a scanning head (not shown) and a color sensor 310, wherein the scanning head scans a bar code or a two-dimensional code on a workpiece to identify the class of the workpiece and records the class information into a computer; the color sensor 310 is used to identify the difference in color of the stage 210 and the workpiece to determine the presence of the workpiece before the laser generator 120 will allow the laser generating operation to be initiated.

As shown in fig. 6 to 8, the photographing system 700 includes a CCD (Charge Coupled Device) camera 710 for photographing a workpiece and obtaining a cutting position of the workpiece, wherein the CCD camera 710 can rotate to ensure accurate photographing and positioning of the photographing system 700. The optical path propagation system 600 includes a galvanometer chamber 620 and a mirror mount 610, wherein one end of the galvanometer chamber 620 is connected to the laser generator 120, the other end of the galvanometer chamber 620 is connected to the mirror mount 610, and a focusing lens (not shown) and a reflecting lens (not shown) are disposed in the mirror mount 610. Specifically, two galvanometers are disposed in the galvanometer chamber 620, and laser generated by the laser generator 120 can be respectively incident on the two galvanometers, and then reach a workpiece after being focused by the focusing lens and reflected by the reflecting lens, so as to cut the workpiece.

As shown in fig. 6 to 7, the laser cutting apparatus 10 further includes a sealing assembly 900, the sealing assembly 900 includes an organ cover 910 and a smoke extraction cover 920, and both the organ cover 910 and the smoke extraction cover 920 are disposed on the machine platform 200. Specifically, the organ cover 910 is disposed below the mirror base 610, one open end of the organ cover 910 is communicated with the mirror base 610, the other open end of the organ cover 910 is communicated with the smoke exhaust hood 920, and the laser is reflected by the reflection lens and then sequentially passes through the organ cover 910 and the smoke exhaust hood 920, so as to cut the workpiece. When the laser adjusting assembly 100 adjusts the position of the laser generator 120, the laser generator 120 drives the mirror vibrating chamber 620 and the mirror base 610 to move, and the organ cover 910 can be extended and retracted, so that the organ cover 910 and the smoke exhaust hood 920 can be sealed perfectly. In addition, the smoke exhaust hood 920 exhausts the dust, smoke and the like generated by laser cutting through the smoke exhaust port of the smoke exhaust hood 920 by the fan, so that the dust, the smoke and the like are prevented from polluting important parts such as a focusing lens in the laser cutting device 10, the dust, the smoke and the like are prevented from diffusing into the air, and the physical health of a user is effectively protected.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A laser adjustment assembly, comprising:

the laser generator is mounted on the sliding platform; and

2. The laser adjustment assembly of claim 1, wherein the slide platform is slidably mounted up and down on the bracket.

3. The laser adjustment assembly of claim 2, wherein the height adjustment assembly further comprises a transmission assembly and a drive device, the transmission assembly being mounted on the bracket and coupled to the sliding platform; the driving device is used for driving the sliding platform to slide in the up-and-down direction through the transmission assembly so as to enable the sliding platform to ascend or descend.

4. The laser adjusting assembly as claimed in claim 3, wherein the transmission assembly comprises a lead screw and a lead screw nut, the lead screw is rotatably disposed on the bracket in the up-down direction, the lead screw is connected with the driving device, and the driving device is used for driving the lead screw to rotate;

the screw rod nut is sleeved on the screw rod through a threaded engagement, and the screw rod nut is connected with the sliding platform.

5. The laser adjustment assembly of claim 4, wherein the drive device comprises a hand wheel coupled to one end of the lead screw.

6. The laser adjustment assembly of claim 5, wherein the height adjustment assembly further comprises a locking assembly for locking the handwheel and/or the lead screw; or,

the height adjusting assembly further comprises a locking assembly used for locking the screw rod, the locking assembly comprises a tightening ring arranged outside the screw rod and a locking screw used for tightly holding or loosening the tightening ring.

7. The laser adjusting assembly as claimed in claim 1, wherein the outer surface of the bracket is provided with a scale in the up-down direction, the sliding platform is provided with a pointer, and the pointer points to the scale.

8. The laser adjusting assembly as claimed in any one of claims 1 to 7, wherein the leveling assembly comprises a plurality of leveling screws, the sliding platform is provided with a plurality of leveling screw holes, screw rods of the leveling screws are screwed in the leveling screw holes, and bottom surfaces of the screw rods of the leveling screws abut against the bottom of the laser generator.

9. The laser adjusting assembly as claimed in claim 8, wherein the leveling assembly further comprises a plurality of leveling locking screws and a plurality of locking nuts, the sliding platform and the bottom plate of the laser generator are provided with leveling locking screw holes, screw rods of the leveling locking screws are screwed in the leveling locking screw holes, and the leveling locking screws lock the laser generator and the sliding platform through the leveling locking nuts.

10. A laser cutting device, comprising a machine table and a laser adjusting assembly according to any one of claims 1 to 9, wherein the machine table has a table top, and a support of the laser adjusting assembly is mounted on the table top.