Z-axis lifting structure of laser forming equipment and laser forming equipment

Abstract

The utility model provides a Z-axis lifting structure of laser forming equipment and the laser forming equipment, and belongs to the technical field of additive manufacturing, the Z-axis lifting structure comprises a base, a forming platform, a guide mechanism and a lifting mechanism, the base is provided with a cavity structure along the Z-axis direction, and the guide mechanism and the lifting mechanism are both located in the cavity structure. The forming platform is located at the top of the lifting mechanism. The lifting mechanism is used for driving the forming platform to ascend and descend. The number of the guide mechanisms is multiple, the guide mechanisms are all arranged between the base and the lifting mechanism, the guide mechanisms are symmetrically distributed along the lifting mechanism in a central symmetry mode, the lifting mechanism can be stressed more evenly when affected by loads and thermal stress through symmetrical distribution, stress concentration and deformation caused by unbalance loading are reduced, and the service life of the lifting mechanism is prolonged. The stability in the movement process is improved; and meanwhile, lateral deviation and shaking of the lifting mechanism in the lifting process can be reduced through symmetrical distribution, so that the lifting motion process of the forming platform is more accurate, and the forming precision of the part is improved.

Description

Technical Field

[0001] This utility model belongs to the field of additive manufacturing technology, specifically the Z-axis lifting structure of laser forming equipment and the laser forming equipment. Background Technology

[0002] Selective laser melting technology is applied to metal additive manufacturing equipment to form laser forming equipment. This laser forming equipment uses a laser beam as an energy source and scans the metal powder bed layer by layer according to the path planned in the three-dimensional CAD slicing model. The scanned metal powder melts rapidly under the action of the laser beam and solidifies rapidly, thereby achieving the effect of metallurgical bonding. Then, it is accumulated layer by layer to finally obtain the metal part designed by the model.

[0003] With the development of selective laser melting technology, higher requirements have been placed on the stability and forming accuracy of laser forming equipment. The cantilever lifting mechanism used in existing laser forming equipment has poor rigidity, which easily causes lateral deviation and swaying during the lifting and lowering of the forming platform, resulting in unstable motion and poor motion accuracy, making it difficult to meet the high precision requirements and thus affecting the forming accuracy of parts. Utility Model Content

[0004] In view of the technical problems described in the background art above, the existing lifting mechanism has unstable motion and poor motion accuracy during the lifting of the forming platform. In order to address this technical problem, this utility model proposes a Z-axis lifting structure for laser forming equipment and a laser forming equipment.

[0005] This invention features multiple guide mechanisms between the base and the lifting mechanism, which are symmetrically distributed around the lifting mechanism. This symmetrical distribution ensures that the lifting mechanism is subjected to more balanced forces under load and thermal stress, reducing stress concentration and deformation caused by off-center loading, and improving stability and rigidity during movement. Furthermore, the symmetrical distribution reduces lateral offset and swaying during lifting, making the forming platform's lifting motion more precise and thus improving the forming accuracy of the parts.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] The Z-axis lifting structure of the laser forming equipment of this utility model includes a base, a forming platform, a guide mechanism and a lifting mechanism. The base is provided with a cavity structure along the Z-axis direction. The guide mechanism and the lifting mechanism are both located in the cavity structure. The forming platform is located on top of the lifting mechanism. The lifting mechanism is used to drive the forming platform to move up and down.

[0008] There are multiple guiding mechanisms, all of which are disposed between the base and the lifting mechanism, and the multiple guiding mechanisms are centrally symmetrically distributed along the lifting mechanism.

[0009] Further defining the lifting mechanism, it includes a lifting frame and a drive transmission assembly. The forming platform is located on top of the lifting frame, and multiple guide mechanisms are disposed between the base and the lifting frame. The power output end of the drive transmission assembly is connected to the lifting frame, and the forming platform is driven to move up and down through the lifting frame.

[0010] Furthermore, the power output end of the drive transmission assembly is located on the same straight line as the center of the lifting frame and the center of the forming platform.

[0011] Further specifying, the drive transmission assembly includes a lead screw transmission assembly and a drive module, the drive module is fixedly connected to the base, and the power output end of the drive module is connected to the lifting frame through the lead screw transmission assembly.

[0012] Further specifying, the lead screw transmission assembly includes a lead screw and a nut that cooperates with the lead screw, the power output end of the drive module is connected to the lead screw, and the nut is connected to the lifting frame.

[0013] Further specifying, the lead screw drive assembly includes a lead screw and a nut that cooperates with the lead screw, the power output end of the drive module is connected to the nut, and the lead screw is connected to the lifting frame.

[0014] Further specifying, the guiding mechanism includes a slider and a guide rail slidably connected to the slider, the slider being connected to the base, and the guide rail being connected to the lifting frame.

[0015] Further defined, the base includes a base and a cylindrical sidewall located above the base, the base and the cylindrical sidewall are integrally formed, and the base and the cylindrical sidewall enclose the cavity structure.

[0016] The drive module is located at the bottom of the cavity structure and is fixedly connected to the base; the guide mechanism is connected between the lifting frame and the cylindrical side wall.

[0017] Furthermore, the Z-axis lifting structure of the laser forming equipment also includes a forming cylinder located at the top of the cavity structure, and the lifting mechanism is used to drive the forming platform to move up and down within the forming cylinder.

[0018] This utility model relates to a laser forming device, which is based on the Z-axis lifting structure of the aforementioned laser forming device.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. The Z-axis lifting structure of the laser forming equipment of this utility model drives the forming platform to move up and down through the lifting mechanism. This utility model sets up multiple guide mechanisms between the base and the lifting mechanism, and the multiple guide mechanisms are symmetrically distributed along the center of the lifting mechanism. The symmetrical distribution can make the lifting mechanism more evenly stressed when subjected to load and thermal stress, reduce stress concentration and deformation caused by off-center load, and improve the stability during the movement. At the same time, the symmetrical distribution can reduce the lateral offset and sway of the lifting mechanism during the lifting process, making the lifting movement of the forming platform more precise, thereby improving the forming accuracy of the parts.

[0021] 2. In this utility model, the guiding mechanism includes a slide rail and a slider. Preferably, the slider is fixed and the guide rail is movable. The slider is fixed on an integrated base and the guide rail is fixed on the lifting frame, which improves the rigidity of the lifting frame and can maintain relative stability during movement. This makes the lever arm shorter under load, further ensuring the smoothness and accuracy of the lifting movement.

[0022] 3. In this utility model, the guide mechanism is arranged at four corners, forming a stable guide support structure. The four guide rails bear the load at multiple points, which has a high resistance to off-center load and can be better applied to high load and high precision occasions.

[0023] 4. In this utility model, the base is integrally set by the base and the cylindrical side wall, which reduces the connection interface and precision transmission links of the lifting structure, and achieves higher structural stability and motion accuracy; the whole equipment has a compact structure, reduces the floor space, improves space utilization, and reduces manufacturing and operating costs. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the Z-axis lifting structure of the laser forming equipment of this utility model;

[0025] Figure 2 This is a schematic diagram of the assembly of the base and the lifting frame;

[0026] In the diagram, 1-forming cylinder, 2-forming platform, 3-lifting frame, 4-base, 5-slider, 6-guide rail, 7-lead screw, 8-drive module. Detailed Implementation

[0027] The technical solution of this utility model will be further explained and described below with reference to the accompanying drawings and embodiments, but this utility model is not limited to the embodiments described below.

[0028] See Figure 1This utility model proposes a Z-axis lifting structure for a laser forming equipment, including a base 4, a forming platform 2, a guide mechanism, and a lifting mechanism. The base 4 has a cavity structure along the Z-axis, and both the guide mechanism and the lifting mechanism are located within the cavity structure. The forming platform 2 is located on top of the lifting mechanism, which drives the forming platform 2 to move up and down along the Z-axis. Multiple guide mechanisms are provided, all positioned between the base 4 and the lifting mechanism, and are centrally symmetrically distributed along the lifting mechanism. Specifically, the number of guide mechanisms can be 2, 4, 8, or even more; this utility model does not specify a particular number of guide mechanisms. As a preferred embodiment of this utility model, see [link to relevant documentation]. Figure 2 There are four guide mechanisms, and the four guide structures are evenly and symmetrically distributed along the circumference of the cavity structure. The symmetrical distribution can make the lifting mechanism more evenly stressed when subjected to load and thermal stress, reduce stress concentration and deformation caused by off-center load, and improve the stability during the movement. At the same time, the symmetrical distribution can reduce the lateral offset and sway of the lifting mechanism during the lifting process, making the lifting movement of the forming platform 2 more precise, thereby improving the forming accuracy of the parts.

[0029] The Z-axis lifting structure of the laser forming equipment of this utility model also includes a forming cylinder 1 located at the top of the cavity structure. The cavity structure is connected to the forming cylinder 1. The lifting mechanism is used to drive the forming platform 2 to move up and down in the forming cylinder 1 to realize the printing and forming of parts.

[0030] In this utility model, the lifting mechanism includes a lifting frame 3 and a drive transmission assembly. The forming platform 2 is located on top of the lifting frame 3. Multiple guide mechanisms are set between the base 4 and the lifting frame 3. The power output end of the drive transmission assembly is connected to the lifting frame 3, and the forming platform 2 is driven to move up and down through the lifting frame 3.

[0031] In a preferred embodiment of this utility model, the power output end of the drive transmission component is on the same straight line as the center of the lifting frame 3 and the center of the forming platform 2, thereby improving the ability of the forming platform 2 to prevent lateral deviation under heavy load.

[0032] In this invention, the drive transmission component can also be a cylinder, a servo motor, or other mechanism capable of linear transmission.

[0033] In a preferred embodiment of the present invention, the drive transmission assembly includes a lead screw transmission assembly and a drive module 8. The drive module 8 is fixedly connected to the base 4, and the power output end of the drive module 8 is connected to the lifting frame 3 through the lead screw transmission assembly.

[0034] In this invention, the lead screw transmission assembly includes a lead screw 7 and a nut that mates with the lead screw 7. The power output end of the drive module 8 is connected to the lead screw 7, and the nut is connected to the lifting frame 3. Specifically, the power output end of the drive module 8 is fixedly connected to the lead screw 7, and the nut is fixedly connected to the lifting frame 3. The driving force generated by the drive module 8 drives the lead screw 7 to rotate, and the lead screw 7 drives the nut to rotate and perform lifting and lowering movements. The lifting frame 3 moves up and down along with the nut, thereby driving the forming platform 2 to move up and down within the forming cylinder 1. This transmission method is the most preferred embodiment of this invention.

[0035] Alternatively, the lead screw drive assembly includes a lead screw 7 and a nut that mates with the lead screw 7. The power output end of the drive module 8 is connected to the nut, and the lead screw 7 is connected to the lifting frame 3. Specifically, the power output end of the drive module 8 is connected to the nut through a bearing, and the lead screw 7 is fixedly connected to the lifting frame 3. The driving force generated by the drive module 8 drives the nut to rotate, and the nut drives the lead screw 7 to rotate and perform lifting and lowering movements. The lifting frame 3 moves up and down together with the lead screw 7, thereby driving the forming platform 2 to move up and down within the forming cylinder 1 through the lifting frame 3.

[0036] In this invention, the guiding mechanism includes a slider 5 and a guide rail 6 slidably connected to the slider 5. The slider 5 is connected to the base 4, and the guide rail 6 is connected to the lifting frame 3. Specifically, the slider 5 is fixedly connected to the base 4, and the guide rail 6 is fixedly connected to the lifting frame 3. This design, where the slider 5 is fixed and the guide rail 6 is movable, improves the rigidity of the lifting frame 3, ensuring relative stability during movement and resulting in a shorter lever arm under load, further ensuring the smoothness and accuracy of the lifting motion. This guiding support method is the most preferred embodiment of this invention.

[0037] Alternatively, as an alternative technical solution, the guiding mechanism includes a guide rail 6 and a slider 5 slidably connected to the guide rail 6. The guide rail 6 is connected to the base 4, and the slider 5 is connected to the lifting frame 3. Specifically, the guide rail 6 is fixedly connected to the base 4, and the slider 5 is connected to the fixed lifting frame 3. During the lifting process, the guide rail 6 remains stationary, while the slider 5 moves up and down along the guide rail 6.

[0038] In this invention, the base 4 includes a base and a cylindrical sidewall located above the base. The base and the cylindrical sidewall are integrally formed, creating a cavity structure. The shape of the cylindrical sidewall can be cylindrical, pyramidal, etc., and this invention does not specifically limit the shape of the cylindrical sidewall. As a preferred embodiment of this invention, the cylindrical sidewall is pyramidal in shape, with four guide mechanisms distributed at the four corners of the cylindrical sidewall, forming a four-corner distribution. Integrating the base and the cylindrical sidewall reduces the connection interfaces and precision transmission links of the base 4, achieving higher structural stability and motion accuracy. The entire device has a compact structure, reducing the floor space, improving space utilization, and reducing manufacturing and operating costs.

[0039] In a preferred embodiment of this utility model, the drive module 8 is located at the bottom of the cavity structure and is fixedly connected to the base; the guide mechanism is connected between the lifting frame 3 and the cylindrical side wall.

[0040] The Z-axis lifting structure of this laser forming equipment works as follows: the driving force of the drive module 8 drives the lead screw transmission assembly to move up and down, which in turn drives the forming platform 2 to move up and down within the forming cylinder 1. Multiple guide mechanisms are symmetrically distributed along the lifting mechanism, forming a stable guide support structure, reducing stress concentration and deformation caused by off-center loading, and improving stability during the movement. At the same time, it reduces lateral offset and swaying of the lifting mechanism during the lifting process, making the lifting movement of the forming platform 2 more precise, thereby improving the forming accuracy of the parts.

[0041] This utility model also proposes a laser forming device, which is based on the Z-axis lifting structure of the aforementioned laser forming device.

[0042] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A Z-axis lifting structure for a laser forming equipment, characterized in that, It includes a base (4), a forming platform (2), a guide mechanism and a lifting mechanism. The base (4) has a cavity structure along the Z-axis. The guide mechanism and the lifting mechanism are both located in the cavity structure. The forming platform (2) is located on top of the lifting mechanism. The lifting mechanism is used to drive the forming platform (2) to move up and down. There are multiple guiding mechanisms, all of which are disposed between the base (4) and the lifting mechanism, and the multiple guiding mechanisms are centrally symmetrically distributed along the lifting mechanism.

2. The Z-axis lifting structure of the laser forming equipment according to claim 1, characterized in that, The lifting mechanism includes a lifting frame (3) and a drive transmission assembly. The forming platform (2) is located on top of the lifting frame (3). Multiple guide mechanisms are arranged between the base (4) and the lifting frame (3). The power output end of the drive transmission assembly is connected to the lifting frame (3), and the forming platform (2) is driven to move up and down through the lifting frame (3).

3. The Z-axis lifting structure of the laser forming equipment according to claim 2, characterized in that, The power output end of the drive transmission assembly is on the same straight line as the center of the lifting frame (3) and the center of the forming platform (2).

4. The Z-axis lifting structure of the laser forming equipment according to claim 2 or 3, characterized in that, The drive transmission assembly includes a lead screw drive assembly and a drive module (8). The drive module (8) is fixedly connected to the base (4). The power output end of the drive module (8) is connected to the lifting frame (3) through the lead screw drive assembly.

5. The Z-axis lifting structure of the laser forming equipment according to claim 4, characterized in that, The lead screw drive assembly includes a lead screw (7) and a nut that cooperates with the lead screw (7). The power output end of the drive module (8) is connected to the lead screw (7), and the nut is connected to the lifting frame (3).

6. The Z-axis lifting structure of the laser forming equipment according to claim 4, characterized in that, The lead screw drive assembly includes a lead screw (7) and a nut that cooperates with the lead screw (7). The power output end of the drive module (8) is connected to the nut, and the lead screw (7) is connected to the lifting frame (3).

7. The Z-axis lifting structure of the laser forming equipment according to claim 4, characterized in that, The guiding mechanism includes a slider (5) and a guide rail (6) slidably connected to the slider (5). The slider (5) is connected to the base (4), and the guide rail (6) is connected to the lifting frame (3).

8. The Z-axis lifting structure of the laser forming equipment according to claim 4, characterized in that, The base (4) includes a base and a cylindrical sidewall located above the base. The base and the cylindrical sidewall are integrally formed, and the base and the cylindrical sidewall enclose the cavity structure. The drive module (8) is located at the bottom of the cavity structure and is fixedly connected to the base; the guide mechanism is connected between the lifting frame (3) and the cylindrical side wall.

9. The Z-axis lifting structure of the laser forming equipment according to claim 1, characterized in that, The Z-axis lifting structure of the laser forming equipment also includes a forming cylinder (1) located at the top of the cavity structure. The lifting mechanism is used to drive the forming platform (2) to move up and down within the forming cylinder (1).

10. A laser forming device, characterized in that, The laser forming equipment is formed based on the Z-axis lifting structure of the laser forming equipment according to any one of claims 1-9.

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