3D printer powder spreader scraper flattening device

Abstract

The present invention provides a device for flattening the scraper strip of a powder spreader in a 3D printer, comprising a bracket, a base plate, and a pressure plate. One end of each bracket and pressure plate is hinged to a side of the base plate. The bracket is positioned above the pressure plate, and a roller is provided on the side of the bracket facing the pressure plate. The pressure plate is provided with a boss on the side facing the base plate. The device has a simple structure, is easy to process, and has low manufacturing costs. The roller uniformly applies force to the pressure plate, and the boss uniformly applies force to the scraper strip of the powder spreader, enabling rapid installation of the scraper strip, avoiding the problem of uneven scraper installation, improving work efficiency, and ensuring the yield rate of SLM 3D printed products.

Description

Technical Field

[0001] The present invention relates to the technical field of auxiliary equipment for a powder spreader of a 3D printer, and in particular to a scraper flattening device for a powder spreader of a 3D printer. Background Art

[0002] When installing the scraper bar on a 3D printer's powder spreader, it's common to manually press it flat. Because the scraper bar itself is relatively soft, the operator can experience inconsistent height during installation, necessitating multiple repetitions. This installation method is not only inefficient and time-consuming, but also often fails to meet the requirements of powder spreading. SLM 3D printers require high uniformity in the thickness of each powder layer. Inconsistent powder spread by the powder spreader can easily result in thicker areas where the powder doesn't melt, leading to product failure. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides a 3D printer powder spreader scraper flattening device.

[0004] The present invention is achieved through the following technical solutions.

[0005] The 3D printer powder spreader scraper flattening device provided by the present invention includes a bracket, a base plate, and a pressure plate. One end of the bracket and the pressure plate is hinged to one side of the base plate. The bracket is located above the pressure plate. A rolling portion is provided on the side of the bracket facing the pressure plate, and a boss is provided on the side of the pressure plate facing the base plate.

[0006] The rolling part is a roller shaft and roller structure, the roller is sleeved on the roller shaft, and both ends of the roller shaft are rotatably connected to the bracket.

[0007] The bracket is provided with a wheel fork, one end of the wheel fork is opened toward the pressure plate, and the roller shaft is located at the opening and fixed by a nut.

[0008] A first limiting portion and a second limiting portion are provided at a portion of the bottom plate facing the pressure plate, and a rectangular groove surface is formed between the first limiting portion and the second limiting portion.

[0009] A handle is provided at one end of the bracket away from the bottom plate.

[0010] The bottom plate is provided with first hinge seats on both sides of the longitudinal center axis, and the first hinge seats are connected to the bracket via a rotating shaft.

[0011] A coil spring is provided on the rotating shaft, one end of the coil spring is clamped on the first hinge seat, and the other end is clamped on the bracket.

[0012] A second hinge seat is also provided in the middle of the bottom plate, and the second hinge seat is connected to the pressing plate via a hinge shaft.

[0013] A coil spring is provided on the second hinge shaft, one end of the coil spring is clamped on the second hinge seat, and the other end is clamped on the pressure plate.

[0014] One end of the pressing plate close to the second hinge seat is provided with a rod-shaped portion.

[0015] The beneficial effects of the present invention are:

[0016] The present invention has a simple structure, is easy to process, and has a low manufacturing cost. The roller part applies force evenly to the pressure plate, and the boss applies force evenly to the powder spreader scraper, thereby achieving rapid installation of the powder spreader scraper, avoiding the problem of uneven installation of the scraper bar, improving work efficiency, and ensuring the yield of SLM3D printing products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0019] like Figure 1 Shown is a schematic structural diagram of the present invention:

[0020] The present invention provides a 3D printer powder spreading device scraper flattening device, comprising a bracket 1, a base plate 2, and a pressure plate 3. One end of the bracket 1 and the pressure plate 3 is hinged to one side of the base plate 2, the bracket 1 is located above the pressure plate 3, and a rolling portion 4 is provided on the side of the bracket 1 facing the pressure plate 3, and a boss 5 is provided on the side of the pressure plate 3 facing the base plate 2.

[0021] When the operator uses this device, he first places the powder spreader 20 on the base plate 2, places the scraper 21 on the groove of the powder spreader 20, presses the bracket 1 downward with his hand, and the rolling part 4 contacts the pressure plate 3, so that the pressure plate 3 is evenly forced to rotate downward, and the lower end of the boss 5 contacts the scraper 21 and the powder spreader 20 until the scraper 21 is pressed into the groove of the powder spreader 20.

[0022] The present invention has a simple structure, is easy to process, and has a low manufacturing cost. The roller part 4 applies force evenly to the pressure plate 3, and the boss 5 applies force evenly to the scraper 21 of the powder spreader 20, thereby achieving rapid installation of the scraper 21 of the powder spreader 20, avoiding the problem of uneven installation of the scraper 21, improving work efficiency, and ensuring the yield of SLM3D printing products.

[0023] The rolling portion 4 is a roller-shaft structure, with the roller sleeved on the roller shaft, and the two ends of the roller shaft are rotatably connected to the bracket 1. This structure has low manufacturing costs, and the roller applies uniform force to the pressure plate 3. It can also roll according to the planar displacement of the bracket 1 relative to the pressure plate 3, ensuring smooth transition when the pressure transmission position changes.

[0024] The bracket 1 is provided with a wheel fork 12, which opens at one end toward the pressure plate 3, and the roller shaft is located at the opening and fixed by a nut. The roller shaft is fixed by the tightening force of the nut, which is convenient for installation and improves assembly efficiency.

[0025] The bottom plate 2 is provided with a first limiting portion 6 and a second limiting portion 7 at the portion facing the pressing plate 3, and a rectangular groove is formed between the first limiting portion 6 and the second limiting portion 7. This facilitates positioning of the powder spreader 20 and prevents the powder spreader 20 from sliding, which causes uneven pressing of different parts of the scraper 21.

[0026] The end of the bracket 1 away from the bottom plate 2 is provided with a handle 8 to improve the convenience of operation.

[0027] The base plate 2 is provided with a first hinge seat 9 on both sides of the length center axis, and the first hinge seat 9 is connected to the bracket 1 through a rotating shaft. The hinge seat connection prevents the bracket 1 from contacting the base plate 2 and avoids the bracket 1 from getting stuck when rotating.

[0028] A coil spring is provided on the rotating shaft, one end of the coil spring is clamped on the first hinge seat 9, and the other end is clamped on the bracket 1. It is convenient to reset the bracket 1 after installing the scraper strip 21, thereby improving work efficiency and operation convenience.

[0029] The middle of the bottom plate 2 is provided with a second hinge seat 10, which is connected to the pressing plate 3 via a hinge shaft to prevent the end of the pressing plate 3 from contacting with the bottom plate 2, causing jamming, resulting in unstable and uneven force on the scraper 21, and causing the scraper 21 to be uneven.

[0030] The second hinge shaft is provided with a coil spring, one end of which is clamped on the second hinge seat 10, and the other end is clamped on the pressure plate 3. This facilitates the reset of the pressure plate 3 after the scraper strip 21 is installed, thereby improving work efficiency and operation convenience.

[0031] The end of the pressing plate 3 close to the second hinge seat 10 is provided with a rod-shaped portion 11. The flexibility of the pressing plate 3 is improved, so that the boss 5 is pressed flat on the scraper strip 21, so that the scraper strip 21 is installed flat.

Claims

1. A 3D printer powder spreading device scraper flattening device, characterized by: It comprises a bracket (1), a bottom plate (2), and a pressure plate (3), wherein one end of the bracket (1) and the pressure plate (3) is hinged to one side of the bottom plate (2), the bracket (1) is located above the pressure plate (3), a rolling portion (4) is provided on the side of the bracket (1) facing the pressure plate (3), and a boss (5) is provided on the side of the pressure plate (3) facing the bottom plate (2); The roller moving part (4) is a roller shaft roller structure, the roller is sleeved on the roller shaft, and the roller shaft Both ends are rotatably connected to the bracket (1); The bracket (1) is provided with a wheel fork (12), and the wheel fork (12) faces the pressure plate (3). One end of the roller is open, and the roller shaft is located at the opening and fixed by a nut; The bottom plate (2) is provided with a first limiting portion (6) and a second limiting portion (7) at a portion facing the pressing plate (3), and a rectangular groove surface is formed between the first limiting portion (6) and the second limiting portion (7); this facilitates positioning of the powder spreader (20) and prevents the powder spreader (20) from sliding, resulting in uneven pressing of different parts of the scraper (21); The base plate (2) is provided with first hinge seats (9) on both sides of the longitudinal center axis, and the first hinge seats (9) are connected to the bracket (1) via a rotating shaft; A second hinge seat (10) is further provided in the middle of the base plate (2), and the second hinge seat (10) is connected to the pressure plate (3) via a hinge shaft.

2. The 3D printer powder spreading device scraper flattening device according to claim 1, characterized in that: A handle (8) is provided at one end of the bracket (1) away from the bottom plate (2).

3. The 3D printer powder spreading device scraper flattening device according to claim 1, characterized in that: The rotating shaft is provided with a coil spring, one end of which is clamped on the first hinge seat (9). The other end is snap-connected to the bracket (1).

4. The 3D printer powder spreading device scraper flattening device according to claim 1, characterized in that: The hinge shaft is provided with a coil spring, one end of which is clamped on the second hinge seat (10). The other end is clamped on the pressure plate (3).

5. The 3D printer powder spreading device scraper flattening device according to claim 1, characterized in that: The pressure plate (3) is provided with a rod-shaped portion (11) at one end close to the second hinge seat (10).

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