Single-scraper double-side back-and-forth powder spreading structure device of metal 3D printer

Abstract

The utility model belongs to the technical field of 3D printing equipment, and particularly relates to a single-scraper double-side back-and-forth powder spreading structure device of a metal 3D printer. The double-powder-groove scraper device is arranged on a working platform and comprises a double-powder-groove scraper frame, a scraper, a powder groove baffle and an adjusting mechanism, the double-powder-groove scraper frame is connected to the working platform in a sliding mode, and the scraper is arranged at the lower end of the double-powder-groove scraper frame; the double-powder-groove scraper frame is provided with two powder grooves, the lower ends of the two powder grooves are open, the powder groove baffle is installed on the double-powder-groove scraper frame, located at the lower ends of the powder grooves and used for blocking the lower end opening of one powder groove, and the adjusting mechanism is used for driving the powder groove baffle to move to the lower end of one powder groove. The powder groove baffle is driven by the adjusting mechanism to block the powder grooves in the double-powder-groove scraper frame, so that powder is always located on the side, where the scraper is about to move, of the powder, the powder falling below the scraper can be acted by the scraper, powder laying is uniform, the error of the powder laying thickness is reduced, and the strength and quality of prepared products are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of 3D printing equipment, and particularly relates to a metal 3D printer single scraper double-sided back and forth powder spreading structure device. Background Art

[0002] 3D printing refers to an emerging manufacturing technology that uses digital models to build up physical objects by stacking materials layer by layer. It is the process of melting the layers of metal powder to obtain a formed part. In this process, a powder spreading mechanism is used to spread the powder, so the powder spreading efficiency and quality are particularly important for the printing efficiency and the precision of the formed part.

[0003] However, existing 3D pad printers usually use a double scraper single powder trough double-sided back-and-forth powder spreading mechanism to spread powder, which easily leads to uneven powder spreading and error in back-and-forth powder spreading thickness, resulting in low strength, uneven stress, and poor surface quality of the products. Therefore, it is necessary to design a metal 3D printer single scraper double-sided back-and-forth powder spreading structure device to solve the above problems. Utility Model Content

[0004] In view of the above problems, the utility model provides a metal 3D printer single scraper double-sided back and forth powder spreading structure device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a metal 3D printer single scraper double-sided back and forth powder spreading structure device, arranged on a working platform, including a double powder groove scraper frame, a scraper, a powder groove baffle and an adjustment mechanism, the double powder groove scraper frame is slidably connected to the working platform, and the scraper is arranged at the lower end of the double powder groove scraper frame;

[0006] The double powder trough scraper frame is provided with two powder troughs, and the lower ends of the two powder troughs are open. The powder trough baffle is installed on the double powder trough scraper frame and is located at the lower end of the powder trough, and is used to block the lower end opening of one of the powder troughs. The adjustment mechanism is used to drive the powder trough baffle to move to the lower end of one of the powder troughs.

[0007] Furthermore, a mounting groove is provided at the lower end of the double powder groove scraper frame, and the powder groove baffle is arranged in the mounting groove and is slidably connected to the mounting groove along the left-right direction.

[0008] Furthermore, the adjustment mechanism includes a buckle and a spring, the middle part of the buckle is connected to the working platform, and the end is used to abut against the powder trough baffle, one end of the spring is connected to the buckle, and the other end is connected to the working platform.

[0009] Furthermore, a first push block and a second push block are respectively provided on the left and right sides of the powder trough baffle, and the buckle is used to be provided between the first push block and the second push block.

[0010] Furthermore, the middle part of the buckle is rotatably connected to the working platform, and the two ends of the buckle are respectively connected to a spring, and the two springs are both connected to the working platform.

[0011] Furthermore, the adjustment mechanism also includes a buckle shaft, and the buckles are provided at the front and rear ends of the working platform. The buckle shaft is connected to the middle parts of the two front and rear buckles and is rotatably connected to the working platform.

[0012] Technical effects and advantages of the utility model:

[0013] 1. The powder trough baffle is driven by the adjustment mechanism to block the powder trough on the double powder trough scraper holder, so that the powder is always located on the side where the scraper is to move, so that the powder falling under the scraper can be acted on by the scraper, thereby making the powder spread even and reducing the error of the powder spread thickness, which is beneficial to improving the strength and quality of the prepared product.

[0014] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram showing the structure of a metal 3D printer single scraper double-sided back and forth powder spreading structure device according to an embodiment of the utility model;

[0017] Figure 2 Shows Figure 1 A magnified image of area A;

[0018] Figure 3 The schematic diagram of the structure of the double powder groove scraper frame of the embodiment of the utility model is shown.

[0019] Figure numerals: 1, working platform; 2, double powder trough scraper frame; 21, powder trough; 22, mounting groove; 3, scraper; 4, powder trough baffle; 51, buckle; 52, spring; 53, buckle shaft. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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] like Figures 1 to 3 As shown, a metal 3D printer single scraper double-sided back and forth powder spreading structure device of the utility model embodiment is arranged on a working platform 1, including a double powder groove scraper frame 2, a scraper 3, a powder groove baffle 4 and an adjustment mechanism, the double powder groove scraper frame 2 is slidably connected to the working platform 1, and the scraper 3 is arranged at the lower end of the double powder groove scraper frame 2;

[0022] The double powder trough scraper frame 2 is provided with two powder troughs 21, and the lower ends of the two powder troughs 21 are open. The powder trough baffle 4 is installed on the double powder trough scraper frame 2 and is located at the lower end of the powder trough 21, and is used to block the lower end opening of one of the powder troughs 21. The adjustment mechanism is used to drive the powder trough baffle 4 to move to the lower end of one of the powder troughs 21.

[0023] Specifically, a motor is provided on the working platform 1, and the motor is used to drive the double powder trough scraper frame 2 to move along the left and right directions of the working platform 1. The two powder troughs 21 are respectively located on the left and right sides of the double powder trough scraper frame 2. At the same time, a through hole is opened in the middle of the powder trough baffle 4 for the scraper 3 to pass through.

[0024] In this embodiment, the motor drives the double powder trough scraper frame 2 to move to the leftmost side of the working platform 1, and the adjustment mechanism drives the powder trough baffle 4 to move to the left side of the double powder trough scraper frame 2 to block the powder trough 21 on the left side of the double powder trough scraper frame 2, so that the powder falls from the powder trough 21 on the right side of the double powder trough scraper frame 2 to the bottom of the scraper 3, and then the motor drives the double powder trough scraper frame 2 to move to the right, and the scraper 3 is used to push the powder to the right side of the working platform 1. Similarly, the motor drives the double powder trough scraper frame 2 to move to the rightmost side of the working platform 1, and the adjustment mechanism drives the powder trough baffle 4 to move to the right side of the double powder trough scraper frame 2 to block the powder trough 21 on the right side of the double powder trough scraper frame 2, so that the powder falls from the powder trough 21 on the left side of the double powder trough scraper frame 2 to the bottom of the scraper 3, and then the motor drives the double powder trough scraper frame 2 to move to the left, and the scraper 3 is used to push the powder to the left side of the working platform 1.

[0025] Therefore, the powder trough baffle 4 is driven by the adjustment mechanism to block the powder trough 21 on the double powder trough scraper frame 2, so that the powder is always located on the side where the scraper 3 is about to move, so that the powder falling under the scraper 3 can be acted upon by the scraper 3, thereby making the powder spreading even and reducing the error in the powder spreading thickness, which is beneficial to improving the strength and quality of the prepared product.

[0026] Alternatively, if Figure 2 As shown, a mounting groove 22 is provided at the lower end of the double powder trough scraper frame 2, and the powder trough baffle 4 is disposed in the mounting groove 22 and is slidably connected to the mounting groove 22 along the left-right direction.

[0027] In this embodiment, a mounting groove 22 is provided at the lower end of the double powder groove scraper frame 2, and the two powder grooves 21 are located within the contour of the mounting groove 22, and the powder groove baffle 4 is disposed in the mounting groove 22 and slidably connected to the mounting groove 22 in the left-right direction. The powder groove baffle 4 is driven to slide in the mounting groove 22 by an adjustment mechanism, and when the powder groove baffle 4 slides to the left side of the mounting groove 22, powder can fall from the right powder groove 21 to below the scraper 3, and when the powder groove baffle 4 slides to the right side of the mounting groove 22, powder can fall from the left powder groove 21 to below the scraper 3.

[0028] Alternatively, if Figure 2 and Figure 3 As shown, the adjustment mechanism includes a buckle 51 and a spring 52. The middle part of the buckle 51 is connected to the working platform 1, and the end is used to abut against the powder trough baffle 4. One end of the spring 52 is connected to the buckle 51, and the other end is connected to the working platform 1.

[0029] In this embodiment, by setting the adjustment mechanism as a buckle 51 and a spring 52, when the double powder trough scraper frame 2 is located on the left side of the platform and the motor drives the double powder trough scraper frame 2 to move to the right side of the working platform 1, the powder trough baffle 4 is used to act on the buckle 51. Since the two ends of the spring 52 are respectively connected to the buckle 51 and the working platform 1, the buckle 51 can be used to limit the powder trough baffle 4 from moving to the right side, and the powder trough baffle 4 moves to the left relative to the double powder trough scraper frame 2 to block the powder trough 21 on the left side. Similarly, when the double powder trough scraper frame 2 is located on the right side of the platform and the motor drives the double powder trough scraper frame 2 to move to the left side of the working platform 1, the powder trough baffle 4 is used to act on the buckle 51. Since the two ends of the spring 52 are respectively connected to the buckle 51 and the working platform 1, the buckle 51 can be used to limit the powder trough baffle 4 from moving to the left side, and the powder trough baffle 4 moves to the right relative to the double powder trough scraper frame 2 to block the powder trough 21 on the right side.

[0030] Optionally, a first push block and a second push block are respectively disposed on the left and right sides of the powder trough baffle 4, and the buckle 51 is used to be disposed between the first push block and the second push block.

[0031] In this embodiment, a first pushing block and a second pushing block are set on the left and right sides of the powder trough baffle 4, and the buckle 51 is set between the first pushing block and the second pushing block. When the double powder trough scraper holder 2 is located on the left side of the working platform 1 and moves to the right side, the first pushing block set on the left side of the powder trough baffle 4 is used to push the buckle 51. When the double powder trough scraper holder 2 is located on the right side of the working platform 1 and moves to the left side, the second pushing block set on the right side of the powder trough baffle 4 is used to push the buckle 51.

[0032] Optionally, the middle part of the buckle 51 is rotatably connected to the working platform 1 , and both ends of the buckle 51 are respectively connected to a spring 52 , and both springs 52 are connected to the working platform 1 .

[0033] In this embodiment, by rotating the middle part of the buckle 51 to connect to the working platform 1, and connecting springs 52 to both ends of the buckle 51, when the first push block or the second push block on the powder trough baffle 4 acts on the upper end of the buckle 51, the spring 52 at the upper end of the buckle 51 is stretched, and the spring 52 at the lower end of the buckle 51 is compressed. Therefore, by arranging a spring 52 at both the upper and lower ends of the buckle 51, two springs 52 can be used to act on the buckle 51, which is convenient for increasing the force that restricts the movement of the powder trough baffle 4, and is conducive to pushing the powder trough baffle 4 to the specified position of the double powder trough scraper frame 2.

[0034] Alternatively, if Figure 3 As shown, the adjustment mechanism further includes a buckle shaft 53, the buckles 51 are provided at both the front and rear ends of the working platform 1, the buckle shaft 53 is connected to the middle parts of the front and rear buckles 51, and is rotatably connected to the working platform 1.

[0035] In this embodiment, by setting the snap shaft 53, the snaps 51 at the front and rear ends of the working platform 1 apply the same force to the front and rear ends of the powder trough baffle 4, which can prevent the front and rear ends of the powder trough baffle 4 from offsetting when moving in the left and right directions relative to the double powder trough scraper frame 2, thereby ensuring that the powder trough baffle 4 can accurately block the powder trough 21 on the double powder trough scraper frame 2.

[0036] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A metal 3D printer single scraper double-sided back and forth powder spreading structure device, arranged on a working platform (1), characterized in that: It comprises a double powder trough scraper frame (2), a scraper (3), a powder trough baffle (4) and an adjustment mechanism, wherein the double powder trough scraper frame (2) is slidably connected to the working platform (1), and the scraper (3) is arranged at the lower end of the double powder trough scraper frame (2); The double powder trough scraper frame (2) is provided with two powder troughs (21), the lower ends of the two powder troughs (21) are open, the powder trough baffle (4) is installed on the double powder trough scraper frame (2) and is located at the lower end of the powder trough (21), and is used to block the lower end opening of one of the powder troughs (21), and the adjustment mechanism is used to drive the powder trough baffle (4) to move to the lower end of one of the powder troughs (21).

2. The metal 3D printer single scraper double-sided back and forth powder spreading structure device according to claim 1, characterized in that: The lower end of the double powder trough scraper frame (2) is provided with a mounting groove (22), and the powder trough baffle (4) is arranged in the mounting groove (22) and is slidably connected to the mounting groove (22) in the left-right direction.

3. The metal 3D printer single scraper double-sided back and forth powder spreading structure device according to claim 2, characterized in that: The adjustment mechanism comprises a buckle (51) and a spring (52); the middle portion of the buckle (51) is connected to the working platform (1), and the end portion is used to abut against the powder trough baffle (4); one end of the spring (52) is connected to the buckle (51), and the other end is connected to the working platform (1).

4. The metal 3D printer single scraper double-sided back and forth powder spreading structure device according to claim 3, characterized in that: A first push block and a second push block are respectively arranged on the left and right sides of the powder trough baffle (4), and the buckle (51) is used to be arranged between the first push block and the second push block.

5. The metal 3D printer single scraper double-sided back and forth powder spreading structure device according to claim 4, characterized in that: The middle part of the buckle (51) is rotatably connected to the working platform (1), and the two ends of the buckle (51) are respectively connected to a spring (52), and the two springs (52) are both connected to the working platform (1).

6. The metal 3D printer single scraper double-sided back and forth powder spreading structure device according to claim 5, characterized in that: The adjustment mechanism further comprises a buckle shaft (53), the buckles (51) are provided at both the front and rear ends of the working platform (1), the buckle shaft (53) is connected to the middle parts of the two front and rear buckles (51), and is rotatably connected to the working platform (1).

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