Laser cutting device

Abstract

The utility model belongs to the technical field of lens processing, and discloses a laser cutting device which comprises a platform, a swing mechanism, a fixing jig and a cutting mechanism. The swing mechanism comprises a first swing assembly and a second swing assembly, the first swing assembly is arranged on the platform, the second swing assembly is arranged on the first swing assembly, the fixing jig is arranged on the second swing assembly, and a part to be cut is fixedly arranged on the fixing jig; the first swing assembly can drive the second swing assembly to drive the fixing jig to swing in the first circumferential direction, and the second swing assembly can drive the fixing jig to swing in the second circumferential direction. The cutting mechanism comprises a first moving assembly arranged on the platform and a laser cutting head arranged at the output end of the first moving assembly, and the laser cutting head can cut a to-be-cut piece. According to the laser cutting device, the first swing assembly and the second swing assembly are arranged, so that the cutting face of the to-be-cut piece and the laser beam emitted by the laser cutting head are kept perpendicular in the normal direction.

Description

Technical Field

[0001] The utility model relates to the technical field of lens processing, in particular to a laser cutting device. Background Art

[0002] Laser cutting is generally used for lens processing. Laser cutting is efficient when cutting lenses with flat cutting surfaces. However, for spherical lenses or free-form lenses, the cutting surfaces are non-flat. When using existing technologies to cut such lenses, it is easy to cause edge chipping of the lenses, the cutting process has low precision, and the defective rate is high. Utility Model Content

[0003] The utility model aims to provide a laser cutting device which is not prone to edge chipping when cutting a workpiece, thereby effectively improving cutting accuracy and yield rate.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] Laser cutting device, comprising:

[0006] platform;

[0007] The swing mechanism comprises a first swing component and a second swing component, wherein the first swing component is arranged on the platform, and the second swing component is arranged on the first swing component;

[0008] A fixed jig, the fixed jig being arranged on the second swinging assembly, and the workpiece to be cut being fixedly arranged on the fixed jig;

[0009] The cutting mechanism comprises a first moving component and a laser cutting head, wherein the first moving component is arranged on the platform, the laser cutting head is arranged at the output end of the first moving component, and the first moving component can drive the laser cutting head to move along a first direction so that the laser cutting head cuts the workpiece to be cut;

[0010] The first swinging component can drive the second swinging component to drive the fixed fixture to swing along the first circumferential direction, and the second swinging component can drive the fixed fixture to swing along the second circumferential direction, so that when the laser cutting head cuts the workpiece to be cut, the cut surface at any cutting point on the cutting surface of the workpiece to be cut is perpendicular to the laser beam emitted by the laser cutting head.

[0011] As an optional solution, the first swing assembly includes a first driving member, a first swing plate and two first supports, the two first supports are arranged on the platform at intervals along the second direction, the first swing plate is rotatably arranged on the two first supports at both ends along the second direction, the first driving member is used to drive the first swing plate to swing along the first circumferential direction, and the first direction and the second direction are perpendicular to each other.

[0012] As an optional solution, the second swing assembly includes a second driving member, a second swing plate and two second supports, the two second supports are arranged on the first swing assembly at intervals along the first direction, the second swing plate is rotatably arranged on the two second supports at both ends along the first direction, and the second driving member is used to drive the second swing plate to swing around the second circumferential direction.

[0013] As an optional solution, the laser cutting head is arranged at the output end of the first moving component through a vertical moving component, and the vertical moving component is used to drive the laser cutting head to move toward or away from the workpiece to be cut in a vertical direction, and the vertical direction is perpendicular to the first direction.

[0014] As an optional solution, a distance measuring sensor is further included, and the distance measuring sensor is used to measure the distance between the laser cutting head and the workpiece to be cut.

[0015] As an optional solution, the fixing fixture includes a supporting seat and a product fixing seat, the supporting seat is arranged on the second swinging assembly, the product fixing seat is fixedly arranged on the supporting seat, and the upper end surface of the product fixing seat facing away from the supporting seat is arranged as a contour surface matching the piece to be cut, and the piece to be cut is fitted and fixed to the contour surface.

[0016] As an optional solution, the support seat is provided with blocks around the product fixing seat, and the product fixing seat is provided with suction holes connected to the contouring surface. The suction holes generate suction through a vacuum generating device to fix the part to be cut on the contouring surface and confine it to the blocks distributed around it.

[0017] As an optional solution, a groove is provided on the supporting seat, and the product fixing seat is fixedly disposed in the groove, and the groove is used to collect waste generated when the workpiece to be cut is cut.

[0018] As an optional solution, it also includes a second movable component, which is arranged on the platform, and the first swinging component is arranged at the output end of the second movable component. The second movable component is used to drive the first swinging component to drive the fixed fixture to move along a second direction, and the first direction and the second direction are perpendicular to each other.

[0019] As an optional solution, the second movable component includes a second bracket and a second movable module, the second bracket includes a support plate and a plurality of screws, the plurality of screws are threadedly connected to the platform, the support plate is fixedly disposed on the top ends of the plurality of screws, the second movable module is fixedly disposed on the support plate, and the first swinging component is disposed at the output end of the second movable module.

[0020] Beneficial effects of the utility model:

[0021] The utility model provides a laser cutting device, which can realize that the cutting surface of the workpiece to be cut is kept perpendicular to the laser beam emitted by the laser cutting head by setting a first swinging component and a second swinging component, so that when the first moving component drives the laser cutting head to move and cut the cutting surface along the first direction, it can ensure that the workpiece to be cut is not prone to edge chipping and deformation, the cutting width is uniform and the edges are neat, thereby improving the cutting accuracy and yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the laser cutting device provided by an embodiment of the utility model;

[0023] Figure 2 yes Figure 1 A magnified view of the structure at center A;

[0024] Figure 3 It is a structural schematic diagram of a fixing fixture involved in an embodiment of the utility model;

[0025] Figure 4 It is a structural schematic diagram of the second moving component involved in the embodiment of the utility model.

[0026] In the figure:

[0027] 100. Parts to be cut;

[0028] 1. Platform;

[0029] 2. Swing mechanism; 21. First swing plate; 22. First support; 23. Second swing plate; 24. Second support;

[0030] 3. Fixing fixture; 31. Support seat; 311. Stopper; 312. Groove; 32. Product fixing seat; 321. Contour surface; 322. Air suction hole; 323. Adsorption groove;

[0031] 4. Cutting mechanism; 41. First moving assembly; 411. Column; 412. First moving module; 42. Laser cutting head; 43. Vertical moving assembly; 431. Mounting plate; 432. Vertical driving module; 433. Mounting block; 434. Guide rail; 435. Sliding block; 436. Connecting horizontal plate;

[0032] 5. Second moving assembly; 51. Adapter plate; 52. Second moving module; 53. Support plate; 54. Screw;

[0033] 6. Camera. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, it can be a mechanical connection or an electrical connection, it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the description of the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0038] like Figure 1-Figure 4As shown, the embodiment of the utility model provides a laser cutting device, which includes a platform 1, a swing mechanism 2, a fixed fixture 3 and a cutting mechanism 4. Among them, the swing mechanism 2 includes a first swing component and a second swing component, the first swing component is arranged on the platform 1, the second swing component is arranged on the first swing component, the fixed fixture 3 is arranged on the second swing component, and the workpiece 100 to be cut is fixedly arranged on the fixed fixture 3; the first swing component can drive the second swing component to drive the fixed fixture 3 to swing along the first circumferential direction, and the second swing component can drive the fixed fixture 3 to swing along the second circumferential direction, so that the workpiece 100 to be cut can swing around the first circumferential direction and the second circumferential direction respectively. The cutting mechanism 4 includes a first movable component 41 and a laser cutting head 42. The first movable component 41 is arranged on the platform 1, and the laser cutting head 42 is arranged at the output end of the first movable component 41. The first movable component 41 can drive the laser cutting head 42 to move along a first direction so that the laser cutting head 42 can cut the workpiece 100 to be cut. The surface of the workpiece 100 to be cut facing the laser cutting head 42 is the cutting surface. The laser cutting head 42 emits a laser beam to the cutting surface to cut the workpiece 100 to be cut.

[0039] When the object 100 to be cut is a spherical glass lens or a free-form surface lens, its cutting surface is a curved surface or a free-form surface. According to actual needs, the first swing component or the second swing component can be swung alone, or the first swing component and the second swing component can be swung simultaneously to achieve the swing of the object 100 to achieve the cutting surface at any cutting point on the cutting surface to be perpendicular to the laser beam emitted by the laser cutting head 42, that is, the cutting surface is always perpendicular to the normal direction of the laser beam. Of course, when the object 100 to be cut is a plane lens, its cutting surface is a plane, and no swing is required.

[0040] The laser cutting device is configured with a first swinging assembly and a second swinging assembly, so that the cutting surface of the workpiece 100 to be cut is kept perpendicular to the laser beam emitted by the laser cutting head 42, so that when the first moving assembly 41 drives the laser cutting head 42 to move and cut the cutting surface along the first direction, it ensures that the workpiece 100 to be cut is not prone to edge chipping and deformation, the cutting width is uniform, and the edges are neat, thereby improving the cutting accuracy and yield rate.

[0041] Alternatively, if Figure 4 Combined with Figure 1As shown, the laser cutting device also includes a second moving component 5, which is arranged on the platform 1, and the first swinging component is arranged at the output end of the second moving component 5. The second moving component 5 is used to drive the first swinging component to drive the fixed fixture 3 to move along the second direction, and the first direction and the second direction are perpendicular to each other. This structure enables the fixed fixture 3 to drive the workpiece 100 to be cut to move along the second direction, so that the laser cutting head 42 can cut the workpiece 100 to be cut along the second direction, so as to achieve the cutting operation of the four sides of the workpiece 100 to be cut.

[0042] Of course, in other embodiments, the laser cutting device may not be provided with the second movable component 5. During the cutting process of the workpiece 100 to be cut, if it is necessary to cut the edges of the workpiece 100 to be cut, the fixed fixture 3 can be manually rotated 90° for installation, and only the first movable component 41 is set to perform the cutting operation on the four sides of the workpiece 100 to be cut.

[0043] Specifically, the second moving assembly 5 includes a second bracket and a second moving module 52, the second bracket includes a support plate 53 and a plurality of screws 54, the plurality of screws 54 are divided into two groups arranged at intervals along the first direction, each group of screws 54 includes three screws 54 arranged at intervals along the second direction, the plurality of screws 54 are all threadedly connected to the platform 1, and nuts can be screwed on the screws 54 to lock the screws 54 and the platform 1, the support plate 53 is arranged at the top of the plurality of screws 54, and the depth of the screws 54 screwed into the platform 1 is adjusted (specifically, the support plate 53 is arranged at the corresponding screws 54). Multiple through holes, a threaded hole is set at the top of the screw 54, and the screw can pass through the through hole and be screwed with the threaded hole to fix the screw 54 to the support plate 53. When the screw 54 is rotated, the screw and the nut can be loosened to realize the rotation of the screw 54 to adjust the height). The parallelism of the support plate 53 and the platform 1 can be adjusted to ensure that the support plate 53 does not tilt; the second movable module 52 (which can be selected as a linear slide) is fixedly set on the support plate 53, and the output end of the second movable module 52 is provided with an adapter plate 51, and the first swing component is set on the adapter plate 51 to achieve connection.

[0044] Specifically, the first swing assembly includes a first driving member, a first swing plate 21 and two first supports 22. The two first supports 22 are arranged on the adapter plate 51 on the platform 1 at intervals along the second direction. First rotating shafts are arranged at both ends of the first swing plate 21 along the second direction. The first rotating shafts at both ends are respectively rotatably arranged on the two first supports 22. The first driving member (which can be selected as a motor) can be arranged on the adapter plate 51, and the output end of the first driving member is connected to the first rotating shaft at one end of the first swing plate 21, so that the first driving member drives the first swing plate 21 to swing around the first circumferential direction. The structural design is simple and the installation and operation are convenient.

[0045] Of course, if the second moving assembly 5 is not provided, the two first supports 22 can be directly provided on the platform 1 .

[0046] Specifically, the second swing assembly includes a second driving member, a second swing plate 23 and two second supports 24. The two second supports 24 are arranged on the first swing plate 21 at intervals along the first direction. The second swing plate 23 is provided with second rotating shafts at both ends along the first direction. The second rotating shafts at both ends are respectively rotatably arranged on the two second supports 24. The second driving member (which can be selected as a motor) can be arranged on the first swing plate 21, and the output end of the second driving member is connected to the second rotating shaft at one end of the second swing plate 23, so that the second driving member can drive the second swing plate 23 to swing around the second circumferential direction. The structural design is simple and the installation and operation are convenient.

[0047] Specifically, the first moving assembly 41 includes a first bracket and a first moving module 412 (which can be selected as a linear slide), the first bracket includes two columns 411 spaced apart along the first direction, the two ends of the first moving module 412 along the first direction are respectively connected to the two columns 411 in an adjustable manner along the vertical direction, the laser cutting head 42 is arranged at the output end of the first moving module 412, and the displacement of the first moving module 412 is adjusted along the vertical direction to adjust the displacement of the laser cutting head 42 along the vertical direction, so that the laser cutting head 42 can maintain a reasonable distance from the workpiece 100 to be cut, and the cutting accuracy is higher. The first direction, the second direction and the vertical direction are perpendicular to each other.

[0048] In order to further improve the cutting stability and the yield rate, the cutting mechanism 4 further includes a vertical moving component 43, which is arranged at the output end of the first moving module 412, and the laser cutting head 42 is arranged at the output end of the vertical moving component 43. When the first moving module 412 drives the vertical moving component 43 to move along the first direction so that the laser cutting head 42 cuts the workpiece 100 to be cut, or when the second moving module 52 drives the workpiece 100 to be cut along the second direction so that the laser cutting head 42 cuts the workpiece 100 to be cut, the vertical moving component 43 can drive the laser cutting head 42 to dynamically approach or move away from the workpiece 100 to be cut in the vertical direction. This structure enables the laser cutting head 42 to maintain a consistent distance from the cutting point when the cutting surface is a curved surface or a free-form surface, so that the laser beam energy of the laser cutting head 42 can be kept consistent, that is, the heat of the workpiece 100 to be cut is kept consistent, and the effect of natural tempering can be achieved, so that the workpiece 100 to be cut is protected from edge collapse and the deformation of the workpiece 100 to be cut is reduced.

[0049] like Figure 2As shown, the vertical moving component 43 includes a mounting plate 431, a vertical driving module 432 (linear module), a mounting block 433 and a guide rail slider structure, the guide rail slider structure includes a guide rail 434 and a slider 435 that are slidably connected to each other, the mounting plate 431 is fixedly arranged at the output end of the first moving module 412, the guide rail 434 is fixedly arranged on the mounting plate 431 and extends in the vertical direction, the mounting block 433 is fixedly arranged on the slider 435, the laser cutting head 42 is fixedly arranged on the mounting block 433, the vertical driving module 432 is arranged on the mounting plate 431, and the vertical driving module can drive the slider 435 to move in the vertical direction, so that the mounting block 433 can drive the laser cutting head 42 to move in the vertical direction.

[0050] In this embodiment, two guide rail slider structures are provided, and two guide rails 434 are arranged on the mounting plate 431 at intervals along the second direction. A connecting cross plate 436 is provided at the output end of the vertical driving module 432. Both sliders 435 are fixedly connected to the connecting cross plate 436. The mounting block 433 can be installed on any slider 435 according to actual needs, and the structure is more stable.

[0051] In order to be able to grasp the distance between the laser cutting head 42 and the workpiece 100 to be cut in real time, the laser cutting device also includes a distance measuring sensor, which is arranged on the mounting block 433 and can measure the distance between the laser cutting head 42 and the cutting point of the workpiece 100 to be cut.

[0052] Furthermore, the laser cutting device also includes a camera 6, which is arranged on the mounting plate 431 and is used to monitor the cutting situation in real time. If unqualified situations such as edge collapse occur, sound and light alarms can be given.

[0053] like Figure 3 As shown, the fixing fixture 3 includes a supporting seat 31 and a product fixing seat 32, the supporting seat 31 is fixedly arranged on the second swing plate 23, the product fixing seat 32 is fixedly arranged on the supporting seat 31, and the upper end surface of the product fixing seat 32 facing away from the supporting seat 31 is arranged to be a contour surface 321 matching the piece to be cut 100, that is, matching the lower end surface of the surface to be cut facing away from the cutting surface, the piece to be cut 100 is fitted and fixed with the contour surface 321, so that the fixation of the piece to be cut 100 is more convenient and the damage to the piece to be cut 100 is reduced.

[0054] Furthermore, in order to further improve the convenience of fixing the workpiece 100 to be cut, the laser cutting device also includes a vacuum generating device, the product fixing seat 32 is provided with an air suction hole 322 connected to the contour surface 321, the supporting seat 31 is provided with a connecting hole, the end of the air suction hole 322 away from the contour surface 321 is connected to the connecting hole, and the vacuum generating device is connected to the connecting hole. When the vacuum generating device is working, the air suction hole 322 can generate suction through the connecting hole to make the workpiece 100 to be cut fit with the contour surface 321; further, the supporting seat 31 is provided with blocks 311 around the product fixing seat 32, and the blocks 311 arranged around the supporting seat 31 constitute a limiting area, and the workpiece 100 to be cut is adsorbed on the contour surface 321 and the four sides of the workpiece 100 to be cut are respectively abutted against the blocks 311 distributed around them to be limited to the limiting area.

[0055] In order to further improve the adsorption strength, an adsorption groove 323 is also provided on the contoured surface 321 of the workpiece 100 to be cut. The adsorption groove 323 extends along the first direction and is connected to the suction hole 322. When the suction hole 322 generates vacuum suction, vacuum suction is also generated in the adsorption groove 323 to adsorb the workpiece 100 to be cut.

[0056] In order to facilitate the collection of waste generated during cutting, a groove 312 is provided on the supporting seat 31, and the product fixing seat 32 is fixedly arranged in the groove 312. When the laser cutting head 42 cuts the workpiece 100 to be cut, the waste can fall into the groove 312, so as to facilitate the collection of the waste and not easily cause pollution to the supporting seat 31, thereby ensuring the overall cleanliness.

[0057] The laser cutting device can realize the swing of the workpiece 100 to be cut around the first circumferential direction and / or the second circumferential direction through the swing mechanism 2, so that the cutting surface of the workpiece 100 to be cut and the laser beam of the laser cutting head 42 always remain normal and perpendicular; and can also ensure the dynamic movement of the laser cutting head 42 in the vertical direction through the vertical moving component 43, so that the distance between the laser cutting head 42 and any cutting point of the workpiece 100 to be cut is consistent, and the energy of the laser beam emitted by the laser cutting head 42 is controlled to be consistent, that is, the heat generated is the same, to avoid tiny cracks caused by different energy during cutting and there is no deformation, the edges are smooth and neat, and no subsequent cleaning and polishing are required, thereby improving the cutting quality and cutting efficiency.

[0058] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Laser cutting device, characterized in that, include: Platform (1); A swing mechanism (2) comprising a first swing component and a second swing component, wherein the first swing component is arranged on the platform (1), and the second swing component is arranged on the first swing component; A fixed jig (3), wherein the fixed jig (3) is arranged on the second swinging assembly, and the piece to be cut (100) is fixedly arranged on the fixed jig (3); A cutting mechanism (4), comprising a first moving component (41) and a laser cutting head (42), wherein the first moving component (41) is arranged on the platform (1), and the laser cutting head (42) is arranged at an output end of the first moving component (41), and the first moving component (41) is capable of driving the laser cutting head (42) to move along a first direction so that the laser cutting head (42) cuts the workpiece (100) to be cut; The first swinging assembly can drive the second swinging assembly to drive the fixed fixture (3) to swing along a first circumferential direction, and the second swinging assembly can drive the fixed fixture (3) to swing along a second circumferential direction, so that when the laser cutting head (42) cuts the workpiece (100) to be cut, the cut surface at any cutting point on the cutting surface of the workpiece (100) to be cut is perpendicular to the laser beam emitted by the laser cutting head (42).

2. The laser cutting device according to claim 1, characterized in that: The first swing assembly comprises a first driving member, a first swing plate (21) and two first supports (22); the two first supports (22) are arranged on the platform (1) at intervals along the second direction; the first swing plate (21) is rotatably arranged on the two first supports (22) at two ends along the second direction; the first driving member is used to drive the first swing plate (21) to swing along the first circumferential direction; the first direction and the second direction are perpendicular to each other.

3. The laser cutting device according to claim 1, characterized in that: The second swing assembly comprises a second driving member, a second swing plate (23) and two second supports (24); the two second supports (24) are arranged on the first swing assembly at intervals along the first direction; the second swing plate (23) is rotatably arranged on the two second supports (24) at two ends along the first direction; and the second driving member is used for driving the second swing plate (23) to swing around the second circumferential direction.

4. The laser cutting device according to claim 1, characterized in that: The laser cutting head (42) is arranged at the output end of the first moving component (41) through a vertical moving component (43), and the vertical moving component (43) is used to drive the laser cutting head (42) to move closer to or away from the workpiece (100) to be cut along a vertical direction, and the vertical direction is perpendicular to the first direction.

5. The laser cutting device according to claim 1, characterized in that: It also includes a distance measuring sensor, which is used to measure the distance between the laser cutting head (42) and the workpiece (100) to be cut.

6. The laser cutting device according to claim 1, characterized in that: The fixing fixture (3) comprises a supporting seat (31) and a product fixing seat (32); the supporting seat (31) is arranged on the second swinging assembly; the product fixing seat (32) is fixedly arranged on the supporting seat (31); and the upper end surface of the product fixing seat (32) facing away from the supporting seat (31) is arranged as a contour surface (321) matching the workpiece (100) to be cut; the workpiece (100) to be cut is fitted and fixed to the contour surface (321).

7. The laser cutting device according to claim 6, characterized in that: The support seat (31) is provided with stoppers (311) on all sides of the product fixing seat (32); the product fixing seat (32) is provided with suction holes (322) connected to the contour surface (321); the suction holes (322) generate suction through a vacuum generating device, so that the piece to be cut (100) is fixed on the contour surface (321) and confined within the stoppers (311) distributed on all sides.

8. The laser cutting device according to claim 6, characterized in that: The supporting seat (31) is provided with a groove (312), the product fixing seat (32) is fixedly arranged in the groove (312), and the groove (312) is used to collect waste generated when the piece to be cut (100) is cut.

9. The laser cutting device according to claim 1, characterized in that: The invention also comprises a second movable component (5), wherein the second movable component (5) is arranged on the platform (1), the first swinging component is arranged at the output end of the second movable component (5), and the second movable component (5) is used to drive the first swinging component to drive the fixed fixture (3) to move along a second direction, and the first direction and the second direction are perpendicular to each other.

10. The laser cutting device according to claim 9, characterized in that: The second moving assembly (5) comprises a second bracket and a second moving module (52); the second bracket comprises a support plate (53) and a plurality of screw rods (54); the plurality of screw rods (54) are all threadedly connected to the platform (1); the support plate (53) is fixedly arranged on the top ends of the plurality of screw rods (54); the second moving module (52) is fixedly arranged on the support plate (53); and the first swinging assembly is arranged at the output end of the second moving module (52).

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