Protective mirror changing device for a laser selective melting apparatus

Abstract

The application discloses a protective mirror replacing device for a laser selective melting equipment, and relates to the technical field of 3D printing, which comprises a warehouse body with a galvanometer installed on a top plate, a dismounting assembly arranged in the warehouse body and used for taking down the protective mirror below the galvanometer, and a mounting assembly used for mounting the protective mirror, wherein the dismounting assembly comprises a push disc I, the push disc I can be driven to move below the galvanometer to dismount the protective mirror, the mounting assembly comprises a push disc II, a plurality of protective mirrors are vertically stacked on the push disc II, and the push disc II can be driven to move below the galvanometer to mount the protective mirror below the galvanometer; the application can realize quick replacement of the protective mirror in a printing process without opening the warehouse, does not affect the printing quality, and reduces the possibility of contamination of the protective mirror.

Description

Technical Field

[0001] This invention relates to the field of 3D printing technology, and more specifically to a protective mirror replacement device for laser selective melting equipment. Background Technology

[0002] Laser selective melting equipment primarily uses a laser beam focused onto a forming plane, controlled by a scanning galvanometer to move at a specific speed and path. This rapidly melts and solidifies the metal powder in the scanned area, forming a solid object. Through layer-by-layer accumulation, complex three-dimensional structures are ultimately processed. Typically, large-scale laser selective melting forming equipment consists of several core components: a working chamber, an optical system, a powder spreading system, a gas circulation and purification system, a computer control system, and other auxiliary devices.

[0003] The protective mirror of the laser selective melting equipment is located below the field mirror and is used to block smoke and dust from the field mirror. However, the protective mirror is easily contaminated during the forming process, which affects the forming quality of the parts. In order to ensure the cleanliness of the protective mirror, the method of wiping the protective mirror after stopping the machine is generally adopted before continuing to work. This method is time-consuming and not conducive to unattended operation. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a protective lens replacement device for laser selective melting equipment, which allows for quick replacement of the protective lens during the printing process without opening the chamber, without affecting the printing quality and improving the stability of the equipment printing.

[0005] The protective mirror replacement device for laser selective melting equipment provided by this invention adopts the following technical solution:

[0006] A protective mirror replacement device for a laser selective melting equipment includes a chamber with a galvanometer mounted on a top plate, a disassembly assembly disposed within the chamber for removing a protective mirror below the galvanometer, and an installation assembly for installing the protective mirror. The disassembly assembly includes a pusher plate I, which can be driven to move below the galvanometer to remove the protective mirror. The installation assembly includes a pusher plate II, on which multiple protective mirrors are vertically stacked, and can be driven to move below the galvanometer to install the protective mirror below the galvanometer.

[0007] Furthermore, a protective compartment for installing and dismantling components and installing components is provided on the top plate inside the compartment, and the protective compartment can be driven to move within the compartment.

[0008] Furthermore, positioning pins I are provided at both ends of the push plate I, and positioning pins II are provided at both ends of the push plate II. A protective mirror bracket for installation is provided on the protective mirror. Positioning grooves are provided at the bottom of the protective mirror bracket near both sides. Positioning pins I and II can be inserted into the positioning grooves to limit the position of the protective mirror bracket.

[0009] Furthermore, the top plate of the chamber is provided with a mounting position for installing a protective mirror, the protective mirror is provided with a protective mirror bracket for installation, and the chamber is provided with a pneumatic gripper at the mounting position for fixing the protective mirror bracket.

[0010] Furthermore, the disassembly assembly also includes a lifting component I disposed within the protective chamber, and a push plate I disposed on top of the lifting component I. The lifting component I is used to push the push plate I upward to below the protective mirror bracket. The pneumatic gripper releases the protective mirror bracket so that the push plate I supports the protective mirror bracket. The lifting component I drives the push plate I downward to detach the protective mirror bracket from the top plate of the chamber.

[0011] Furthermore, the protective chamber is equipped with a mounting bracket I for installing the lifting component I.

[0012] Furthermore, the installation assembly also includes a lifting component II disposed within the protective chamber, a pusher plate II disposed on the lifting component II, the lifting component II pushes the pusher plate II upward to move the uppermost protective mirror bracket to the installation position, and the pneumatic gripper fixes the protective mirror bracket to secure the protective mirror in place.

[0013] Furthermore, the protective chamber is equipped with a mounting bracket II for installing the lifting component II.

[0014] Furthermore, a slide rail is provided on the top plate of the compartment, and the protective compartment can be driven to move along the slide rail within the compartment.

[0015] Furthermore, an inflatable sealing ring is provided on the top of the protective chamber.

[0016] In summary, the present invention has at least one of the following beneficial effects: the present invention enables the protective lens to be replaced quickly during the printing process without opening the printing chamber, without affecting the printing quality, and at the same time reduces the possibility of the protective lens being contaminated. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0018] Figure 2 This is a side sectional view of an embodiment of the present invention;

[0019] Figure 3 for Figure 1 Enlarged view of section A;

[0020] Figure 4 This is a schematic diagram of the structure of the protective mirror according to an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Chamber body; 11. Slide rail; 12. Pneumatic gripper; 2. Galvanometer; 3. Disassembly assembly; 31. Push plate I; 311. Positioning pin I; 32. Lifting component I; 4. Installation assembly; 41. Push plate II; 411. Positioning pin II; 42. Lifting component II; 5. Protective chamber; 51. Mounting bracket I; 52. Mounting bracket II; 53. Pneumatic sealing ring; 6. Protective mirror; 61. Protective mirror bracket; 62. Positioning groove. Detailed Implementation

[0023] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0024] The following is in conjunction with the appendix Figure 1-4 The present invention will be described in further detail below.

[0025] This invention discloses a protective mirror replacement device for laser selective melting equipment. (Refer to...) Figures 1-4 A protective lens replacement device for laser selective melting equipment includes a chamber 1 with a galvanometer 2 mounted on its top plate, a disassembly assembly 3 for removing the protective lens 6 below the galvanometer 2, and an installation assembly 4 for installing the protective lens 6. The disassembly assembly 3 includes a pusher plate I 31, which can be driven to move below the galvanometer 2 to remove the protective lens 6. The installation assembly 4 includes a pusher plate II 41, on which multiple protective lenses 6 are vertically stacked. The pusher plate II 41 can be driven to move below the galvanometer 2 to install the protective lens 6 below the galvanometer 2. During replacement, the pusher plate I 31 is moved below the galvanometer 2 to loosen the installed protective lens 6, allowing it to fall onto the pusher plate I 31. The pusher plate I 31 is then removed to detach the protective lens 6 from the chamber 1. The pusher plate II 41 is then moved below the galvanometer 2, and the topmost protective lens stacked on the pusher plate II 41 is installed on the top plate of the chamber 1. This device enables quick replacement of the protective lens during the printing process without opening the chamber, without affecting print quality.

[0026] In this embodiment, a protective chamber 5 for installing and disassembling the assembly 3 and the installation assembly 4 is provided on the top plate inside the chamber 1. The protective chamber 5 can be driven to move within the chamber 1. The movement of the protective chamber 5 can be achieved by an electric push cylinder or a lead screw motor, etc. The disassembly assembly 3 and the installation assembly 4 are installed together through the protective chamber 5. By moving the protective chamber 5, the disassembly assembly 3 and the installation assembly 4 can be moved to below the galvanometer 2. After the disassembly assembly 3 disassembles the protective mirror 6, the installation assembly 4 is moved to below the galvanometer 2 by moving the protective chamber 5 to install the protective mirror 6. At the same time, the protective chamber 5 can reduce the entry of dust and reduce the contamination of the spare protective mirror 6 on the push plate II 41.

[0027] In this embodiment, positioning pins I311 are provided at both ends of the push plate I31, and positioning pins II421 are provided at both ends of the push plate II41. A protective mirror bracket 61 for installation is provided on the protective mirror 6. Positioning grooves 62 are provided at the bottom of the protective mirror bracket 61 near both sides. Positioning pins I311 and II411 can be inserted into the positioning grooves 62 to limit the protective mirror bracket 61. Positioning pins I311 and II411 can prevent the protective mirror 6 from falling off the push plate I31 and push plate II41, making the protective mirror 6 more stable when placed on the push plate I31 and push plate II41.

[0028] In this embodiment, the top plate of the chamber 1 is provided with a mounting position for installing the protective mirror 6. The chamber 1 is provided with a pneumatic gripper 12 for fixing the protective mirror bracket 61 at the mounting position. The top of the protective mirror bracket 61 is provided with a columnar part near both ends. The columnar part at the top of the protective mirror bracket 61 can also be inserted into the positioning groove 62 of the protective mirror bracket 61, so that the protective mirror brackets 61 can be stacked together. The sides are provided with grooves to facilitate the pneumatic gripper 12 to grasp and fix the protective mirror bracket 61.

[0029] In this embodiment, the disassembly assembly 3 further includes a lifting component I 32 disposed within the protective chamber 5. The lifting component I 32 is an electric pusher cylinder. The pusher plate I 31 is disposed on the top of the lifting component I 32. The lifting component I 32 is used to push the pusher plate I 31 upward to below the protective mirror bracket 61, so that the positioning pin I 311 on the pusher plate I 31 is inserted into the positioning groove 62 on the protective mirror bracket 61. The pneumatic gripper 12 releases the protective mirror bracket 61, allowing the pusher plate I to support the protective mirror bracket 61. The protective mirror bracket 61 rests completely on the pusher plate I 31. The lifting component I 32 drives the pusher plate I 31 downward to detach the protective mirror bracket 61 from the top plate of the chamber 1, thus completing the disassembly of the protective mirror 6.

[0030] In this embodiment, the protective chamber 5 is provided with a mounting bracket I51 for installing the lifting component I32.

[0031] In this embodiment, the installation assembly 4 further includes a lifting component II 42 disposed within the protective chamber 5. The lifting component II 42 is an electric pusher cylinder. The pusher plate II 41 is disposed on the lifting component II 42. The lifting component II 42 pushes the pusher plate II 41 upward to move the uppermost protective mirror bracket 61 to the installation position. The pneumatic gripper 12 fixes the protective mirror bracket 61 to install and fix the protective mirror 6, thus completing the installation of the protective mirror 6. The lifting component II 42 then moves downward to detach the other spare protective mirrors 6 on the pusher plate II 41 from the installed protective mirrors 6.

[0032] In this embodiment, the protective chamber 5 is provided with a mounting bracket II52 for installing the lifting component II42.

[0033] In this embodiment, two parallel slide rails 11 are provided on the top plate of the chamber 1 to ensure the stability of the movement of the protective chamber 5. The protective chamber 5 can be driven to move along the slide rails 11 within the chamber 1.

[0034] In this embodiment, the top of the protective chamber 5 is provided with an inflatable sealing ring 53. During normal operation and lens replacement, the inflatable sealing ring 53 is inflated to fill the gap between the protective chamber 5 and the top plate of the chamber body 1, preventing dust from entering the protective chamber 5 and contaminating the protective lens 6. When the protective chamber 5 needs to be moved, the inflatable sealing ring 53 is deflated to allow the protective chamber 5 to move on the chamber body 1. When it is moved to a suitable position, the inflatable sealing ring 53 is inflated to seal the protective chamber 5.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A protective mirror changing device for a laser selective melting apparatus, characterized in that: The assembly includes a chamber (1) with a galvanometer (2) mounted on the top plate, a disassembly assembly (3) located inside the chamber (1) for removing the protective mirror (6) below the galvanometer (2), and an installation assembly (4) for installing the protective mirror (6). The disassembly assembly (3) includes a push plate I (31), which can be driven to move below the galvanometer (2) to remove the protective mirror (6). The installation assembly (4) includes a push plate II (41), on which multiple protective mirrors (6) are stacked vertically. The push plate II (41) can be driven to move below the galvanometer (2) to install the protective mirror (6) below the galvanometer (2). The top plate inside the chamber (1) is provided with a protective chamber (5) for installing and disassembling the assembly (3) and installing the assembly (4), and the protective chamber (5) can be driven to move inside the chamber (1); The protective mirror (6) is provided with a protective mirror bracket (61) for installation, and the bottom of the protective mirror bracket (61) is provided with positioning grooves (62) near both sides. The top plate of the chamber (1) is provided with a mounting position for installing the protective mirror (6), and the chamber (1) is provided with a pneumatic gripper (12) for fixing the protective mirror bracket (61) at the mounting position. The disassembly assembly (3) also includes a lifting component I (32) disposed in the protective chamber (5). The push plate I (31) is disposed on the top of the lifting component I (32). The lifting component I (32) is used to push the push plate I (31) upward to below the protective mirror bracket (61). The pneumatic gripper (12) releases the protective mirror bracket (61) so that the push plate I supports the protective mirror bracket (61). The lifting component I (32) drives the push plate I (31) downward to make the protective mirror bracket (61) detach from the top plate of the chamber (1). The installation assembly (4) also includes a lifting component II (42) disposed in the protective chamber (5). The push plate II (41) is disposed on the lifting component II (42). The lifting component II (42) pushes the push plate II (41) upward to move the uppermost protective mirror bracket (61) to the installation position. The pneumatic gripper (12) fixes the protective mirror bracket (61) to install and fix the protective mirror (6).

2. The protective mirror changing device for a laser selective melting apparatus according to claim 1, characterized in that: The push plate I (31) is provided with positioning pin I (311) at both ends, and the push plate II (41) is provided with positioning pin II (411) at both ends. Both positioning pin I (311) and positioning pin II (411) can be inserted into the positioning groove (62) to limit the position of the protective mirror bracket (61).

3. The protective lens replacement device for laser selective melting equipment according to claim 1, characterized in that: The protective chamber (5) is equipped with a mounting bracket (51) for installing the lifting component (32).

4. The protective mirror replacement device for a laser selective melting apparatus according to claim 1, characterized in that: The protective chamber (5) is equipped with a mounting bracket (52) for installing the lifting component (42).

5. The protective mirror replacement device for a laser selective melting apparatus according to claim 1, characterized in that: The top plate of the chamber (1) is provided with a slide rail (11), and the protective chamber (5) can be driven to move along the slide rail (11) inside the chamber (1).

6. The protective mirror changing device for a laser selective melting apparatus according to claim 1, characterized by: An inflatable sealing ring (53) is provided on the top of the protective chamber (5).

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