Laser cutting protection device

Abstract

The utility model discloses a laser cutting protection device which comprises a machining table, electric cylinders are symmetrically and fixedly installed on the top of the machining table, and a connecting plate is fixedly connected between the output ends of the two electric cylinders. Due to the arrangement of the electric cylinder, the connecting plate, the lifting assembly and the like, when the electric cylinder drives the cutting assembly at the bottom of the connecting plate to approach the plate for laser cutting, the symmetrical first racks at the two ends of the bottom of the connecting plate move downwards and are meshed with the adjacent gear shafts, so that the gear shafts rotate; meanwhile, the other side of the gear shaft is meshed with the surface of a second rack on one side of a connecting rod, so that the second rack automatically drives a transparent protective cover to move upwards in the direction of a connecting plate, a metal plate on the surface of the machining table is shielded, and the effect that the protective cover automatically isolates laser is achieved; and in the plate laser cutting process, sparks and laser can be separated from workers, use is easy and convenient, and the safety in the laser cutting process is improved.

Description

Technical Field

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

[0002] Laser cutting is to focus the laser light emitted from the laser into a high-power density laser beam through the optical path system. The laser beam irradiates the surface of the workpiece, causing the workpiece to reach the melting point or boiling point. At the same time, the high-pressure gas coaxial with the beam blows away the molten or vaporized metal. As the relative position of the beam and the workpiece moves, the material is eventually cut, thereby achieving the purpose of cutting.

[0003] The Chinese patent document with publication number CN214868110U provides a protective device for a laser cutting machine, including a placement table for placing workpieces on the laser cutting machine and a circular baffle mounted on the placement table, wherein the placement table is provided with a moving part for driving the baffle to move along the height direction of the placement table, and the top of the baffle is installed with extension plates around the periphery through mounting parts; when in use, it is only necessary to place the workpiece on the placement table and then drive the baffle to move along the height direction of the placement table through the moving part until the top of the baffle is located above the placement table, and then start laser cutting of the workpiece, at which time the baffle can separate the sparks and laser generated during the laser cutting process from the staff, thereby reducing the harm of the sparks and laser to the staff, and the extension plate can be installed around the top of the baffle through the mounting parts, at which time the height of the baffle can be increased by the extension plate to increase the effect of separating the sparks and laser from the staff, and the use is simple and convenient;

[0004] In the above solution, when the baffle is moved up to separate the sparks and laser of laser cutting from the staff, the user needs to manually adjust the movable baffle, and after it is moved into place, the baffle needs to be manually fixed, which further affects the efficiency of sheet laser cutting. In addition, when cutting the sheet, the two sides of the cutting position of the metal sheet are not fixed, thereby affecting the cutting accuracy of the sheet. Therefore, the utility model designs a laser cutting protection device to solve the problems existing in the prior art. Utility Model Content

[0005] The purpose of the utility model is to provide a laser cutting protection device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a laser cutting protection device, comprising: a processing table, an electric cylinder is symmetrically fixedly installed on the top of the processing table, a connecting plate is fixedly connected between the output ends of the two electric cylinders, a positioning assembly is symmetrically arranged on the bottom of the connecting plate, a cutting assembly is arranged in the middle position of the bottom of the connecting plate, a transparent protective cover is movably installed on the outside of the processing table, and lifting assemblies are symmetrically arranged between the inner wall of the transparent protective cover and the side walls at both ends of the processing table.

[0007] Preferably, the positioning assembly includes: a T-shaped movable rod, which is movable in the vertical direction and is arranged on one side of the bottom of the connecting plate, the top of the T-shaped movable rod extends to the top of the connecting plate, a pressure plate is fixedly installed on the bottom of the T-shaped movable rod, and a return spring is mounted on the surface of the T-shaped movable rod, and the top of the return spring is fixedly connected to the bottom of the connecting plate.

[0008] Preferably, the cutting assembly includes: a fixed plate and a servo motor, wherein two fixed plates are provided, and the two fixed plates are symmetrically fixedly installed at the middle position of the bottom of the connecting plate, a threaded rod is rotatably installed between the two fixed plates, the servo motor is fixedly installed on one side of the adjacent fixed plate, the output end of the servo motor is fixedly connected to one end of the threaded rod, a threaded sleeve is threadedly installed on the surface of the threaded rod, and the top of the threaded sleeve is slidably installed on the bottom of the connecting plate, and a laser cutting machine is fixedly installed on the bottom of the threaded sleeve.

[0009] Preferably, the side walls on both sides of the processing table are fixedly installed with sliders, the inner walls on both sides of the transparent protective cover are provided with sliding grooves, and the side walls on both sides of the processing table are slidably installed with the inner walls on both sides of the transparent protective cover through the sliders.

[0010] Preferably, the lifting assembly includes: a gear shaft, a first rack and a connecting rod, the gear shaft is rotatably mounted on one end of the processing table, the first rack is fixedly mounted on one end of the bottom of the connecting plate, the surface on one side of the first rack is meshed with the surface on one side of the gear shaft, the connecting rod is fixedly mounted on the inner wall on one side of the transparent protective cover, one side of the connecting rod is fixedly connected to the second rack, and the surface on one side of the second rack is meshed with the surface on the other side of the gear shaft.

[0011] Preferably, through grooves are symmetrically arranged inside the connecting plate, and the two through grooves correspond one-to-one to the tops of the two second racks.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model is provided with components such as an electric cylinder, a connecting plate and a lifting assembly. When the electric cylinder drives the cutting assembly at the bottom of the connecting plate to approach the plate for laser cutting, the first racks symmetrically arranged at both ends of the bottom of the connecting plate move downward and mesh with the adjacent gear shaft to rotate the gear shaft. At the same time, the other side of the gear shaft meshes with the surface of the second rack on one side of the connecting rod, so that the second rack automatically drives the transparent protective cover to move upward in the direction of the connecting plate to shield the metal plate on the surface of the processing table, so as to achieve the effect of automatically isolating the laser from the protective cover. In the process of laser cutting of the plate, the sparks and laser can be separated from the staff. The utility model is simple and convenient to use, improves the safety of the laser cutting process, and improves the processing efficiency of laser cutting.

[0014] 2. The utility model is provided with components such as an electric cylinder, a connecting plate and a positioning assembly. When the electric cylinder drives the cutting assembly at the bottom of the connecting plate to approach the plate for laser cutting, the pressure plates at the bottom of the two symmetrical T-shaped movable rods on the connecting plate are first pressed on both sides of the cutting position of the plate to fix the laser-cut plate, thereby increasing the accuracy of the plate during the laser cutting process and improving the cutting quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0016] Figure 2 It is a three-dimensional schematic diagram of the local structures of the processing table, positioning components and lifting components of the utility model;

[0017] Figure 3 It is a schematic diagram of the front cross-sectional view of the utility model;

[0018] Figure 4 For the utility model Figure 3 A schematic diagram of the enlarged structure in the middle.

[0019] In the figure: 1. processing table; 2. electric cylinder; 3. connecting plate; 301. through groove; 4. positioning assembly; 401. T-shaped movable rod; 402. pressure plate; 403. return spring; 5. cutting assembly; 501. fixing plate; 502. threaded rod; 503. servo motor; 504. threaded sleeve; 505. laser cutting machine; 6. transparent protective cover; 7. lifting assembly; 701. gear shaft; 702. first rack; 703. connecting rod; 704. second rack. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 The utility model provides an embodiment: a laser cutting protection device, comprising: a processing table 1, an electric cylinder 2 is symmetrically fixedly installed on the top of the processing table 1, and the two electric cylinders 2 are synchronously lifted and retracted by parameter setting. A connecting plate 3 is fixedly connected between the output ends of the two electric cylinders 2, and a positioning component 4 is symmetrically arranged on the bottom of the connecting plate 3. A cutting component 5 is arranged in the middle position of the bottom of the connecting plate 3, and a transparent protective cover 6 is movably installed on the outside of the processing table 1, and a lifting component 7 is symmetrically arranged between the inner wall of the transparent protective cover 6 and the side walls at both ends of the processing table 1. With the cooperation of the electric cylinder 2, the positioning component 4, the cutting component 5, the transparent protective cover 6 and the lifting component 7, when the output end of the electric cylinder 2 drives the cutting component 5 at the bottom of the connecting plate 3 to approach the metal sheet for cutting, the positioning component 4 can first press and fix the two sides of the cutting position of the sheet, thereby increasing the accuracy of the sheet during the laser cutting process and improving the cutting quality. At the same time, during the descent of the connecting plate 3, the lifting component 7 is set to automatically drive the transparent protective cover 6 to move up in the direction of the connecting plate 3, and shield the metal sheet on the surface of the processing table 1, so as to achieve the effect of automatic isolation of the laser by the protective cover, and can separate the sparks and laser from the staff during the laser cutting process of the sheet. The use is simple and convenient, thereby improving the safety during the laser cutting process and the processing efficiency of the laser cutting.

[0022] See also Figure 1-3 In the embodiment of the utility model, the positioning assembly 4 includes: a T-shaped movable rod 401, which is movable in the vertical direction and penetrates one side of the bottom of the connecting plate 3, and the top of the T-shaped movable rod 401 extends to the top of the connecting plate 3. A pressing plate 402 is fixedly installed at the bottom of the T-shaped movable rod 401, and a reset spring 403 is sleeved on the surface of the T-shaped movable rod 401, and the top of the reset spring 403 is fixedly connected to the bottom of the connecting plate 3. When the output end of the electric cylinder 2 is contracted to make the cutting assembly 5 at the bottom of the connecting plate 3 close to the plate to be cut, the pressing plates 402 at the bottom of the two symmetrical T-shaped movable rods 401 are first pressed on both sides of the plate cutting position to fix the laser-cut plate, increase the accuracy of the plate during the laser cutting process, and improve the cutting quality.

[0023] See also Figure 3-4In the embodiment of the utility model, the cutting assembly 5 includes a fixed plate 501 and a servo motor 503. The fixed plates 501 are provided with two, and the two fixed plates 501 are symmetrically fixedly installed at the middle position of the bottom of the connecting plate 3. A threaded rod 502 is rotatably installed between the two fixed plates 501. The servo motor 503 is fixedly installed on one side of the adjacent fixed plate 501. The output end of the servo motor 503 is fixedly connected to one end of the threaded rod 502. A threaded sleeve 504 is threadedly installed on the surface of the threaded rod 502, and the top of the threaded sleeve 504 is slidably installed on the bottom of the connecting plate 3. A laser cutting machine 505 is fixedly installed at the bottom of the threaded sleeve 504. After the connecting plate 3 moves down to its place, the servo motor 503 and the laser cutting machine 505 are started, and the threaded rod 502 is driven to rotate by the output end of the servo motor 503, so that the threaded sleeve 504 on the surface of the threaded rod 502 drives the laser cutting machine 505 fixedly installed at the bottom to move horizontally. Through the movement of the laser cutting machine 505, the laser cutting machine 505 cuts the metal sheet placed on the surface of the processing table 1.

[0024] See also Figure 2-3 In the embodiment of the utility model, the side walls on both sides of the processing table 1 are fixedly mounted with sliders, the inner walls on both sides of the transparent protective cover 6 are provided with slide grooves, and the side walls on both sides of the processing table 1 are slidably mounted with the inner walls on both sides of the transparent protective cover 6 through the sliders. The transparent protective cover 6 is slidably mounted with the processing table 1, so as to further improve the stability of the transparent protective cover 6 during the lifting process.

[0025] See also Figure 1-3 In the embodiment of the utility model: the lifting assembly 7 includes: a gear shaft 701, a first rack 702 and a connecting rod 703, the gear shaft 701 is rotatably mounted on one end of the processing table 1, the first rack 702 is fixedly mounted on one end of the bottom of the connecting plate 3, the surface on one side of the first rack 702 is meshed with the surface on one side of the gear shaft 701, the connecting rod 703 is fixedly mounted on the inner wall of one side of the transparent protective cover 6, one side of the connecting rod 703 is fixedly connected to the second rack 704, and the surface on one side of the second rack 704 is meshed with the surface on the other side of the gear shaft 701. When the output end of the electric cylinder 2 drives the connecting plate 3 to descend, the first racks 702 symmetrically arranged at both ends of the bottom of the connecting plate 3 move downward and mesh with the adjacent gear shaft 701, causing the gear shaft 701 to rotate. At the same time, the other side of the gear shaft 701 meshes with the surface of the second rack 704 on one side of the connecting rod 703, causing the second rack 704 to automatically drive the transparent protective cover 6 to move upward in the direction of the connecting plate 3. When the connecting plate 3 moves down into place, the transparent protective cover 6 moves up to a certain height and blocks the metal sheet on the surface of the processing table 1, so that during the laser cutting process of the sheet metal, the sparks and laser can be separated from the staff. The use is simple and convenient, and the safety during the laser cutting process is improved.

[0026] See also Figure 1-2 In the embodiment of the utility model, the connecting plate 3 is symmetrically provided with through slots 301, and the two through slots 301 correspond to the tops of the two second racks 704. The diameter of the through slots 301 is larger than the cross-sectional width of the second racks 704. When the gear shaft 701 rotates to move the second racks 704 upward, the through slots 301 are provided so that the tops of the second racks 704 can pass through the corresponding through slots 301, so that the upward movement of the second racks 704 is not interfered.

[0027] Working principle: Turn on the power supply, and during the laser cutting process of the metal plate, place the plate on the surface of the processing table 1, start the electric cylinder 2, and at this time, the output ends of the two electric cylinders 2 shrink synchronously, so that when the cutting assembly 5 at the bottom of the connecting plate 3 is close to the cut plate, the pressure plates 402 at the bottom of the two symmetrical T-shaped movable rods 401 are first pressed on both sides of the plate cutting position to fix the laser cut plate, and at the same time as the output end of the electric cylinder 2 drives the connecting plate 3 to descend, the first racks 702 symmetrical at both ends of the bottom of the connecting plate 3 move down and mesh with the adjacent gear shaft 701 to rotate the gear shaft 701, and at the same time, the other side of the gear shaft 701 meshes with the surface of the second rack 704 on one side of the connecting rod 703, so that the second rack 704 automatically drives the transparent protective cover 6 to move up in the direction of the connecting plate 3. When the connecting plate 3 moves down to the position, the transparent protective cover 6 moves up to a certain height and blocks the metal plate on the surface of the processing table 1, so that the sparks and laser can be separated from the staff during the laser cutting process of the plate. The contents not described in detail in this specification belong to the prior art known to professionals in this field.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A laser cutting protection device, comprising: A processing table (1) is characterized in that: an electric cylinder (2) is symmetrically fixedly installed on the top of the processing table (1), a connecting plate (3) is fixedly connected between the output ends of the two electric cylinders (2), a positioning assembly (4) is symmetrically arranged at the bottom of the connecting plate (3), a cutting assembly (5) is arranged in the middle position of the bottom of the connecting plate (3), a transparent protective cover (6) is movably installed on the outside of the processing table (1), and lifting assemblies (7) are symmetrically arranged between the inner wall of the transparent protective cover (6) and the side walls at both ends of the processing table (1).

2. A laser cutting protection device according to claim 1, characterized in that: The positioning assembly (4) comprises: a T-shaped movable rod (401), the T-shaped movable rod (401) is movably arranged in the vertical direction and penetrates one side of the bottom of the connecting plate (3), the top of the T-shaped movable rod (401) extends to the top of the connecting plate (3), a pressure plate (402) is fixedly installed on the bottom of the T-shaped movable rod (401), a return spring (403) is mounted on the surface of the T-shaped movable rod (401), and the top of the return spring (403) is fixedly connected to the bottom of the connecting plate (3).

3. The laser cutting protection device according to claim 1, characterized in that: The cutting assembly (5) comprises: a fixed plate (501) and a servo motor (503); two fixed plates (501) are provided, and the two fixed plates (501) are symmetrically fixedly mounted at the middle position of the bottom of the connecting plate (3); a threaded rod (502) is rotatably mounted between the two fixed plates (501); the servo motor (503) is fixedly mounted on one side of an adjacent fixed plate (501); an output end of the servo motor (503) is fixedly connected to one end of the threaded rod (502); a threaded sleeve (504) is threadedly mounted on the surface of the threaded rod (502); the top of the threaded sleeve (504) is slidably mounted on the bottom of the connecting plate (3); and a laser cutting machine (505) is fixedly mounted on the bottom of the threaded sleeve (504).

4. The laser cutting protection device according to claim 1, characterized in that: The side walls on both sides of the processing table (1) are fixedly mounted with slide blocks, and the inner walls on both sides of the transparent protective cover (6) are provided with slide grooves. The side walls on both sides of the processing table (1) are slidably mounted with the inner walls on both sides of the transparent protective cover (6) via the slide blocks.

5. The laser cutting protection device according to claim 1, characterized in that: The lifting assembly (7) comprises: a gear shaft (701), a first rack (702) and a connecting rod (703); the gear shaft (701) is rotatably mounted on one end of the processing table (1); the first rack (702) is fixedly mounted on one end of the bottom of the connecting plate (3); the surface of one side of the first rack (702) meshes with the surface of one side of the gear shaft (701); the connecting rod (703) is fixedly mounted on the inner wall of one side of the transparent protective cover (6); one side of the connecting rod (703) is fixedly connected to the second rack (704); and the surface of one side of the second rack (704) meshes with the surface of the other side of the gear shaft (701).

6. The laser cutting protection device according to claim 5, characterized in that: Through grooves (301) are symmetrically arranged inside the connecting plate (3), and the two through grooves (301) correspond one to one to the tops of the two second racks (704).

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