A SLM 3D printer support base

Abstract

The present invention relates to the field of 3D printing technology, and in particular to a SLM3D printer support base, comprising a bearing assembly, the bearing assembly comprising a support member, a first driving member arranged below the support member, the support member comprising a base plate and a carrier plate detachably connected to the base plate; the carrier plate comprising an outer frame body, a replacement panel arranged inside the outer frame body, and the replacement panel is detachably connected to the base plate; a printing assembly, the printing assembly comprising a support frame, a second driving member arranged in the support frame, an actuator arranged on the second driving member, and a receiving frame arranged on the outer wall of the support member. The beneficial effects of the present invention are: by dividing the carrier plate into an outer frame body for connection and a replacement panel for carrying workpieces, the entire panel carrying the workpiece is replaced with a plurality of miniaturized detachable replacement panels, and when taking out the workpiece, it is not necessary to take out the entire panel, and only the panel of the size of the area occupied by the bottom of the workpiece needs to be taken out, thereby simplifying the operation process of splitting the workpiece.

Description

Technical Field

[0001] The invention relates to the technical field of 3D printing, in particular to a SLM 3D printer support base. Background Art

[0002] SLM (Selective Laser Melting) 3D printer is a metal powder bed melting technology that uses a high-energy laser beam to melt metal powder layer by layer to build a three-dimensional object. SLM technology can produce metal parts with nearly full density, with high precision, high efficiency and high-quality printing characteristics. This technology is widely used in the automotive, aerospace, energy, industrial and medical fields because it can produce products of any shape, including lightweight components with cavities or honeycomb structures.

[0003] When the SLM3D printer is printing a workpiece, the workpiece will usually adhere to the support base under the action of the high-temperature laser beam. When the SLM3D printer completes the printing work, the staff needs to take out the entire base and put the molded workpiece together with its base into the machine tool for cutting operations to achieve the purpose of separating the workpiece and the base. The process of completely removing the workpiece is relatively laborious and has a certain limit on the size of the SLM3D printer; as a result, under the action of the high-temperature laser beam, the support base is in this state for a long time, resulting in damage to the support base, which makes it difficult to remove and replace, or the bottom structure of the support base changes due to long-term high temperature, and it is unable to stably support the printed parts. Summary of the invention

[0004] In view of the above existing technical problems, the present invention is proposed.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: an SLM3D printer support base, comprising a bearing assembly, the bearing assembly comprising a support member, a first driving member arranged below the support member, the support member comprising a bottom plate and a carrier plate detachably connected to the bottom plate; the carrier plate comprises an outer frame, a replacement panel arranged inside the outer frame, the replacement panel is detachably connected to the bottom plate; and a printing assembly, the printing assembly comprising a supporting frame, a second driving member arranged in the supporting frame, an actuator arranged on the second driving member, and a containing frame arranged on the outer wall of the supporting member.

[0006] A heat insulation board is arranged between the positioning column and the replacement panel. A trigger block is also arranged between the positioning column and the heat insulation board. A slot is provided on the positioning column to cooperate with the fixing block, and the depth of the slot is greater than the width of the trigger block. The outer wall of the trigger block includes a first trigger surface and a second trigger surface, and the fixing block includes a first matching surface and a second matching surface to cooperate with the first trigger surface and the second trigger surface.

[0007] As a preferred solution of the SLM 3D printer support base of the present invention, the carrier plate further includes a first through hole formed on the outer frame.

[0008] As a preferred solution of the SLM3D printer support base of the present invention, there are multiple replacement panels, and the multiple replacement panels completely fill the range wrapped by the outer frame.

[0009] As a preferred solution of the SLM3D printer support base of the present invention, wherein: a mounting sleeve is fixedly provided on one side of the replacement panel close to the bottom plate, and a fixing sleeve is fixedly provided on the outer wall of the mounting sleeve.

[0010] As a preferred solution of the SLM3D printer support base of the present invention, wherein: a receiving groove is opened in the fixing sleeve, an elastic member is connected inside the receiving groove, and a fixing block is connected to one end of the elastic member away from the fixing sleeve.

[0011] As a preferred solution of the SLM3D printer support base of the present invention, the end surface of the bottom plate is provided with positioning columns matching the number of the replacement panels, and the positioning columns are movably matched with the installation sleeve.

[0012] As a preferred solution of the SLM3D printer support base of the present invention, wherein: the first driving member includes a first driving motor, a first transmission screw arranged for transmission with the first driving motor, and a first transmission sleeve arranged for transmission of the outer wall of the first transmission screw; wherein, the first transmission sleeve is fixedly connected to the base plate.

[0013] The beneficial effects of the SLM3D printer support base of the present invention are as follows: by functionally partitioning the carrier plate into an outer frame for connection and a replacement panel for carrying workpieces, the conventional whole panel for carrying workpieces is replaced with a plurality of miniaturized replacement panels, and after the replacement panels are detachably connected to the bottom plate, when taking out the workpiece, it is not necessary to take out the entire panel, but only the panel of the size of the area occupied by the bottom of the workpiece needs to be taken out, thereby simplifying the operation process of dividing the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0015] Figure 1 It is an overall schematic diagram of the SLM3D printer in the present invention.

[0016] Figure 2 It is a top view of the SLM 3D printer in the present invention.

[0017] Figure 3 It is a schematic diagram of the AA section of the SLM 3D printer in the present invention.

[0018] Figure 4 This is an enlarged view of point B of the SLM3D printer in the present invention.

[0019] Figure 5 It is a front view of the SLM3D printer in the present invention.

[0020] Figure 6 This is an enlarged view of the CC of the SLM3D printer in the present invention.

[0021] Figure 7 This is an enlarged view of the SLM 3D printer D in the present invention.

[0022] Figure 8 This is an enlarged view of point E of the SLM3D printer in the present invention.

[0023] Fig. 9 This is a schematic diagram of the working state of the high temperature working condition support base of the SLM3D printer in the present invention.

[0024] In the figure: 100, bearing assembly; 101, support member; 101a, bottom plate; 101b, loading plate; 101c, trigger block; 101d, mounting sleeve; 101e, elastic member; 101f, fixing block; 101g, heat insulation board; 101a-1, positioning column; 101a-2, card slot; 101b-1, outer frame; 101b-2, replacement panel; 101b-3, first through hole; 101c-1, first trigger surface; 101c-2, second trigger surface; 101d-1, fixing sleeve; 101 d-2, accommodating groove; 101f-1, first mating surface; 101f-2, second mating surface; 101f-3, third mating surface; 102, first driving member; 102a, first driving motor; 102b, first transmission screw; 102c, first transmission sleeve; 200, printing assembly; 201, supporting frame; 202, second driving member; 202a, second driving motor; 202b, second transmission screw; 203, actuator; 203a, scraper; 204, accommodating frame; 204a, collecting bucket. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0028] Example 1

[0029] Reference Figure 1 to Figure 6 , which is the first embodiment of the present invention, this embodiment provides an SLM3D printer support base, including a support assembly 100, including a support member 101, and a first driving member 102 arranged below the support member 101, the support member 101 includes a bottom plate 101a and a carrier plate 101b detachably connected to the bottom plate 101a; the carrier plate 101b includes an outer frame 101b-1 and a replacement panel 101b-2 arranged inside the outer frame 101b-1, and the replacement panel 101b-2 is detachably connected to the bottom plate 101a.

[0030] The printing assembly 200 includes a supporting frame 201 , a second driving member 202 disposed in the supporting frame 201 , an actuator 203 disposed on the second driving member 202 , and a containing frame 204 disposed on the outer wall of the supporting member 101 .

[0031] Preferably, the support frame 201 is used to support components inside the printer, and the second driving member 202 includes a second driving motor 202a and a second driving screw 202b transmission-disposed on the second driving motor 202a, and the second driving motor 202a is fixedly disposed on the support frame 201.

[0032] Preferably, the supporting frame 201 is provided with partitions in the middle and bottom of the frame body to divide the whole printer into two layers, wherein the receiving frame 204 is fixedly provided on the second-layer partition. The second driving member 202 is provided above the second-layer partition.

[0033] Furthermore, the actuator 203 includes a scraper 203a, a mounting frame for mounting the scraper 203a, and a laser head disposed in the mounting frame and facing one side of the receiving frame 204, for emitting a laser beam to melt the metal powder. The scraper 203a is slidably disposed on the surface of the mounting frame and facing one side of the receiving frame 204.

[0034] When the SLM (Selective Laser Melting) 3D printer is working, a thin layer of metal powder is first prepared. The powder is evenly distributed in the receiving frame 204 and above the carrier plate 101b to form a uniform particle bed.

[0035] Once the powder bed is prepared, a high-powered laser beam is directed onto the powder surface. The laser scans the area in accordance with the digital design data, selectively melting and fusing the metal particles; as the laser beam interacts with the metal powder, it rapidly heats the particles to a temperature slightly below their melting point. This localized heating causes the particles to fuse together, thereby solidifying and bonding the material. The molten metal solidifies almost immediately after the laser is removed, forming a solid cross-section of the desired object; after each layer is melted and solidified, the support 101 is lowered and a new layer of metal powder is evenly spread on top. The process is repeated, with the laser scanning and melting each layer and bonding the newly melted material to the previous layer. This layer-by-layer building process continues until the entire object is created.

[0036] The scraper 203a is slidably connected to the installation frame. When the metal powder is solidified, the scraper 203a moves to scrape off the excess metal powder in the current layer.

[0037] A collecting hopper 204a is provided below the containing frame 204. The collecting hopper 204a is connected to the containing frame 204 and is used to collect excess metal powder in the printer. The collecting hopper 204a is conical in shape, so that the metal powder can automatically fall into the bottom of the collecting hopper 204a.

[0038] Furthermore, the containing frame 204 is slidably connected to the supporting member 101, and the first driving member 102 is connected to the supporting member 101. Power is output through the first driving member 102. After each layer of the workpiece is melted and solidified, the supporting member 101 is gradually lowered until the workpiece is completely formed.

[0039] Preferably, the loading plate 101 b is divided into a connection area and a bearing area by functional divisions. The connection area is the outer frame 101 b - 1 , and the outer frame 101 b - 1 is slidably connected to the support member 101 .

[0040] Preferably, the replacement panel 101b-2 can be designed differently according to the bottom surfaces of different components.

[0041] In summary, when the printer completes printing of the workpiece and removes excess parts powder, the workpiece connected to the replacement panel 101b-2 can be directly taken out without taking out the entire carrier plate 101b, which simplifies the operation process of dividing the workpiece. In addition, due to the current consideration of the size of the carrier plate 101b, the size of the opening window of the 3D printer occupies most of the entire 3D printer. By adopting a detachable replacement panel 101b-2, a small 3D printer can be designed according to its own production needs, thereby reducing the size of the overall printer.

[0042] Example 2

[0043] Reference Figure 1 to Figure 9 , which is the second embodiment of the present invention, and further provides a SLM 3D printer support base. The carrier plate 101b also includes a first through hole 101b-3 formed on the outer frame 101b-1.

[0044] The first through holes 101 b - 3 are opened around the carrier plate 101 b , and the metal powder penetrates onto the bottom plate 101 a through the first through holes 101 b - 3 .

[0045] It should be noted that a plurality of second through holes connected to the collecting hopper 204a are formed on the end surface of the bottom plate 101a, that is, the remaining metal powder directly penetrates into the collecting hopper 204a through the first through holes 101b-3 and the second through holes.

[0046] There are multiple replacement panels 101b-2, and the multiple replacement panels 101b-2 completely fill the range covered by the outer frame 101b-1.

[0047] Preferably, different numbers of replacement panels 101b-2 are provided according to different parts. Currently, when printing a single part, the entire carrier plate 101b needs to be taken out, or the entire carrier plate 101b needs to be placed inside the printer. By designing a detachable replacement panel 101b-2, when printing a single part, part of the replacement panel 101b-2 can be installed on the base plate 101a to print the part, and there is no need to take out the entire carrier plate 101b when removing it.

[0048] A mounting sleeve 101d is fixedly provided on one side of the replacement panel 101b-2 close to the bottom plate 101a, and a fixing sleeve 101d-1 is fixedly provided on the outer wall of the mounting sleeve 101d.

[0049] Preferably, the installation sleeve 101d has a cavity inside, and the installation sleeve 101d is positioned and matched with the positioning column 101a-1 through the cavity, so that the replacement panel 101b-2 is positioned on the surface of the bottom plate 101a, so as to facilitate carrying the components to be printed.

[0050] A receiving groove 101d - 2 is provided in the fixing sleeve 101d - 1 , an elastic member 101e is connected to the inside of the receiving groove 101d - 2 , and a fixing block 101f is connected to one end of the elastic member 101e away from the fixing sleeve 101d - 1 .

[0051] Preferably, the elastic member 101e is a compression spring, and one end of the elastic member 101e is fixedly connected to the fixing block 101f through the fixing sleeve 101d-1.

[0052] The end surface of the bottom plate 101a is provided with positioning posts 101a-1, the number of which matches the replacement panel 101b-2, and the positioning posts 101a-1 are movably matched with the installation sleeve 101d.

[0053] A heat insulation board 101g is provided between the positioning column 101a-1 and the replacement panel 101b-2.

[0054] It should be noted that in SLM3D printing technology, since the metal powder needs to be heated above the melting point, the temperature inside the printer is at a relatively high level. The design of the heat insulation board 101g isolates most of the heat above the heat insulation board 101g, which further improves the service life of related components such as the base plate 101a.

[0055] A trigger block 101c is further provided between the positioning column 101a-1 and the heat insulation board 101g. A slot 101a-2 cooperating with the fixing block 101f is provided on the positioning column 101a-1. The depth of the slot 101a-2 is greater than the width of the trigger block 101c.

[0056] Preferably, the heat insulation plate 101g is located between the trigger block 101c and the replacement panel 101b-2, the trigger block 101c and the positioning column 101a-1 are integrally formed, and the width of the trigger block 101c is smaller than the width of the positioning column 101a-1, and the slot is located between the positioning column 101a-1 and the trigger block 101c, then the upper and lower areas of the slot 101a-2 are different, and the area close to the trigger block 101c is smaller than the area close to the positioning column 101a-1.

[0057] The outer wall of the trigger block 101c includes a first trigger surface 101c-1 and a second trigger surface 101c-2, and the fixing block 101f includes a first matching surface 101f-1 and a second matching surface 101f-2 matching with the first trigger surface 101c-1 and the second trigger surface 101c-2.

[0058] Preferably, the first trigger surface 101c-1 and the second trigger surface 101c-2 can be mutually symmetrical inclined surfaces, or can be arc surfaces as shown in the drawings of the present invention. Similarly, the first mating surface 101f-1 and the second mating surface 101f-2 can be mutually symmetrical inclined surfaces or can be arc surfaces as shown in the drawings of the present invention, so that the first trigger surface 101c-1 and the second trigger surface 101c-2 can be mated with the first mating surface 101f-1 and the second mating surface 101f-2.

[0059] Preferably, the surface of the fixing block 101f close to the positioning column 101a-1 is recorded as the third matching surface 101f-3, and the third matching surface 101f-3 includes at least one edge line parallel to the bottom plate 101a, such as the fixing block 101f is cylindrical or rectangular.

[0060] Furthermore, when the second mating surface 101f-2 on the fixed block 101f contacts the first trigger surface 101c-1, the fixed block 101f slides into the accommodating groove 101d-2. When the fixed block 101f is completely separated from the trigger block 101c, the fixed block 101f is inserted into the slot 101a-2. At this time, the contact area between the third mating surface 101f-3 close to the side of the positioning column 101a-1 and the slot 101a-2 is also greater than the contact area on the side away from the positioning column 101a-1. That is, the fixed block 101f cannot be separated from the slot 101a-2 by applying a force toward the side of the positioning column 101a-1 if it is not damaged. On the contrary, if a force is applied away from the side of the positioning column 101a-1, the fixed block 101f can be separated from the slot 101a-2, that is, the replacement panel 101b-2 can be separated from the base plate 101a.

[0061] The first driving member 102 includes a first driving motor 102a, a first transmission screw 102b which is transmission-equipped with the first driving motor 102a, and a first transmission sleeve 102c which is transmission-equipped with the outer wall of the first transmission screw 102b; wherein the first transmission sleeve 102c is fixedly connected to the bottom plate 101a.

[0062] By starting the first transmission motor 102a, the first transmission sleeve 102c can drive the bottom plate 101a and the carrier plate 101b to move, so as to gradually lower the support member 101 after each layer of the workpiece is melted and solidified until the workpiece is completely formed.

[0063] Preferably, refer to Fig. 9 , Fig. 9 This is a display of the state of the SLM3D printer under high temperature conditions. Due to the high melting point of metal powder, the temperature inside the printer is relatively high at this time. Since there are multiple replacement panels 101b-2 in the carrier plate 101b and the replacement panel 101b-2 is small in area, the temperature to which the replacement panel 101b-2 is subjected is also relatively high. Under the high temperature, the insulation board 101g may be deformed by the temperature transmitted by the replacement panel 101b-2. At this time, due to the heat insulation ability of the insulation board 101g, the temperature above the insulation board 101g is relatively high. Under high temperature and high pressure conditions, the insulation board 101g itself will also undergo certain deformation, with the two ends curled up and the middle sunken, resulting in unstable support of the replacement panel 101b-2.

[0064] At this time, under the action of high-temperature and high-pressure gas, the trigger block 101c below is driven to produce the same deformation. At this time, due to the action of the trigger block 101c, the fixed block 101f is tilted on the side close to the positioning column 101a-1, providing stable support for the replacement panel 101b-2, that is, the fixed block 101f can adaptively adjust its own angle to provide stable support for the replacement panel 101b-2, and when the fixed block 101f is deformed, the accommodating groove 101d-2 also undergoes corresponding deformation to prevent the fixed block 101f from being stuck in the accommodating groove 101d-2.

[0065] In summary, according to different workpieces to be printed, different numbers of replacement panels 101b-2 are placed on the positioning column 101a-1. After the workpiece is printed, the replacement panel 101b-2 underneath can be easily taken out by grabbing the workpiece without taking out the entire carrier plate 101b.

Claims

1. A SLM 3D printer support base, characterized in that: include, A bearing assembly (100) comprises a support member (101), and a first driving member (102) disposed below the support member (101), wherein the support member (101) comprises a bottom plate (101a) and a loading plate (101b) detachably connected to the bottom plate (101a); the loading plate (101b) comprises an outer frame (101b-1), and a replacement panel (101b-2) disposed inside the outer frame (101b-1), wherein the replacement panel (101b-2) is detachably connected to the bottom plate (101a); and, A printing assembly (200) comprising a support frame (201), a second driving member (202) arranged in the support frame (201), an actuator (203) arranged on the second driving member (202), and a containing frame (204) arranged on the outer wall of the support member (101); Wherein, the end surface of the bottom plate (101a) is provided with positioning columns (101a-1) whose number matches the number of the replacement panels (101b-2), and the positioning columns (101a-1) are movably matched with the installation sleeve (101d); A heat insulation board (101g) is provided between the positioning column (101a-1) and the replacement panel (101b-2); A trigger block (101c) is also provided between the positioning column (101a-1) and the heat insulation board (101g); a slot (101a-2) cooperating with the fixing block (101f) is provided on the positioning column (101a-1); the depth of the slot (101a-2) is greater than the width of the trigger block (101c).

2. The SLM 3D printer support base according to claim 1, characterized in that: The object carrier plate (101b) further comprises a first through hole (101b-3) opened on the outer frame (101b-1).

3. The SLM 3D printer support base according to claim 2, characterized in that: A plurality of replacement panels (101b-2) are provided, and the plurality of replacement panels (101b-2) completely fill the range wrapped by the outer frame (101b-1).

4. The SLM 3D printer support base as claimed in claim 3, characterized in that: A mounting sleeve (101d) is fixedly provided on one side of the replacement panel (101b-2) close to the bottom plate (101a), and a fixing sleeve (101d-1) is fixedly provided on the outer wall of the mounting sleeve (101d).

5. The SLM 3D printer support base according to claim 4, characterized in that: A receiving groove (101d-2) is provided in the fixing sleeve (101d-1), an elastic member (101e) is connected inside the receiving groove (101d-2), and a fixing block (101f) is connected to one end of the elastic member (101e) away from the fixing sleeve (101d-1).

6. The SLM 3D printer support base according to claim 5, characterized in that: The outer wall of the trigger block (101c) comprises a first trigger surface (101c-1) and a second trigger surface (101c-2), and the fixed block (101f) comprises a first matching surface (101f-1) and a second matching surface (101f-2) matching with the first trigger surface (101c-1) and the second trigger surface (101c-2).

7. The SLM 3D printer support base according to claim 6, characterized in that: The first driving member (102) comprises a first driving motor (102a), a first transmission screw (102b) transmission-connected to the first driving motor (102a), and a first transmission sleeve (102c) transmission-connected to the outer wall of the first transmission screw (102b); Wherein, the first transmission sleeve (102c) is fixedly connected to the base plate (101a).

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