A SLS powder feeding and filling vibration device

Abstract

The utility model discloses an SLS powder feeding and filling vibration device, which belongs to the technical field of SLS laser powder printing equipment, comprising a powder supply tank, a filling plate is arranged at the top position of the powder supply tank, a connecting rod is fixedly connected to the center position of the bottom of the filling plate, a bottom end of the connecting rod is fixedly connected to a chassis, a sliding rod passes through the surface of the chassis and is slidably connected, a limiting block is fixedly connected to the top of the sliding rod, a vibration plate is fixedly connected to the bottom end of the sliding rod, a vibration motor is installed on the top of the vibration plate, two breaking rods are embedded and rotatably arranged at the bottom of the filling plate, a filling tube is fixedly connected to the surface of the filling plate, and the filling structure of the utility model can be used to break up the powder after adding it by rotating the breaking rod, so as to simply remove the gaps between the powders, and some agglomerated powder raw materials can also be effectively broken up, so as to facilitate the improvement of the compactness of subsequent vibration filling.

Description

Technical Field

[0001] The utility model relates to the technical field of SLS laser powder printing equipment, in particular to an SLS powder feeding and filling vibration device. Background Art

[0002] SLS is a powder bed fusion technology that uses a laser beam to locally sinter redispersible latex powder and build parts layer by layer. It is one of the current 3D printing technologies. SLS powder 3D printing is an ideal choice for producing functional products with complex geometries. Compared with other 3D printing technologies, this solution has few design restrictions and is also suitable for mass production.

[0003] After searching, the patent publication number is: CN209193113U "A SLS powder feeding and filling vibration device", which includes a sealing body and a vibrator. The sealing body has an upper sealing plate, a lower sealing plate, a sealing cloth and a lifting mechanism. The sealing cloth is flexible and is arranged along the edges of the upper sealing plate and the lower sealing plate. The three form an air-permeable and powder-impermeable enclosed space. One end of the lifting mechanism passes through the upper sealing plate, enters the enclosed space and is connected to the lower sealing plate, and drives the lower sealing plate to move up and down relative to the upper sealing plate; the vibrator includes a powder guide tube, a vibration cylinder and a vibration motor. The utility model has a simple structure and good sealing performance. Before sintering, the nylon powder in the powder supply cylinder is vibrated to compact it, so as to avoid powder collapse and insufficient powder supply during the powder feeding process. The above scheme vibrates and screens the added powder through a vibrating cylinder, so that the powder of the SLS equipment is more compact, which is convenient for the subsequent pushing and spreading of the material by the pushing roller. However, the above scheme directly adds the powder raw material into the tank body and then directly vibrates and compacts it. However, because the raw material is agglomerated or is vibrated and compacted without being directly broken up, the effect of vibration filling is poor and there is a problem of insufficient compactness. Utility Model Content

[0004] The utility model aims to provide a SLS powder feeding and filling vibration device to solve the problem that the powder raw material is directly added by vibration in the above-mentioned background technology, but the vibration compaction effect is poor for mixing and breaking up the raw material powder.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A SLS powder feeding and filling vibration device comprises a powder supply tank, a filling tray is provided at the top position of the powder supply tank, a connecting rod is fixedly connected to the center position of the bottom of the filling tray, the bottom end of the connecting rod is fixedly connected to a chassis, a sliding rod passes through the surface of the chassis and is slidably connected, the top of the sliding rod is fixedly connected to a limiting block, the bottom end of the sliding rod is fixedly connected to a vibration tray, a vibration motor is installed on the top of the vibration tray, two breaking rods are embedded and rotatably provided at the bottom of the filling tray, and a filling pipe is passed through and fixedly connected to the surface of the filling tray.

[0007] Furthermore, the top bolt of the filler plate is connected with a lifting rod, which is hydraulically driven and installed at the top of the SLS laser equipment.

[0008] Furthermore, a spring is fixedly connected between the bottom of the limit block and the top of the chassis, and the spring is arranged on the outside of the slide rod.

[0009] Furthermore, an annular groove is provided at the bottom of the packing plate near the breaking rod, the breaking rod slides through the annular groove, and one end of the breaking rod near the inner groove of the annular groove is fixedly connected with a secondary gear.

[0010] Furthermore, a main gear is meshedly connected between the two auxiliary gears, and the main gear is rotatably connected to the inner groove wall of the filling plate.

[0011] Furthermore, a servo motor is arranged above the main gear, and the servo motor is bolted to the outer wall relative to the top of the filling tray, and the output end of the servo motor passes through the top of the filling tray and is fixedly connected to the main gear.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The filling structure in this embodiment uses a rotating breaking rod to break up the powder after adding it, so as to simply remove the gaps between the powders, and some agglomerated powder materials can also be effectively broken up, so as to facilitate the compactness improvement of subsequent vibration filling;

[0014] The powder is broken up and evenly mixed, and then compacted up and down to make the loaded powder material compact. The air between the powders is discharged through stirring, and then vibrated to flatten and compact, thereby improving the efficiency and quality of powder filling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic cross-sectional view of the structure of the filling device in the utility model;

[0016] Figure 2 It is a structural stereoscopic schematic diagram of the filling device in the utility model;

[0017] Figure 3It is a schematic cross-sectional view of the structure of the filling device in the utility model;

[0018] Figure 4 For the utility model Figure 1 A is an enlarged structural diagram of FIG.

[0019] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0020] 1. Powder supply tank; 2. Filling plate; 3. Connecting rod; 4. Chassis; 5. Sliding rod; 6. Limit block; 7. Vibrating plate; 8. Vibrating motor; 9. Breaking rod; 10. Filling tube; 11. Lifting rod; 12. Spring; 13. Ring groove; 14. Sub gear; 15. Main gear; 16. Servo motor. DETAILED DESCRIPTION

[0021] Example

[0022] See also Figures 1 to 4 : A SLS powder feeding and filling vibration device comprises a powder supply tank 1, a filling tray 2 is provided at the top position of the powder supply tank 1, a lifting rod 11 is bolted to the top of the filling tray 2, the lifting rod 11 is hydraulically driven and installed at the top position of the SLS laser equipment, a connecting rod 3 is fixedly connected to the bottom center position of the filling tray 2, the bottom end of the connecting rod 3 is fixedly connected to a chassis 4, a sliding rod 5 passes through and is slidably connected to the surface of the chassis 4, a limiting block 6 is fixedly connected to the top of the sliding rod 5, a vibration tray 7 is fixedly connected to the bottom end of the sliding rod 5, a vibration motor 8 is installed on the top of the vibration tray 7, and the vibration tray 7 is limited by the sliding rod 5, so that the vibration tray 7 at the bottom can achieve up and down beating vibration through the vibration motor 8, so that the powder can be more conveniently packed and filled, and the filling efficiency and effect are improved. Two breaking rods 9 are embedded and rotatably provided at the bottom of the filling tray 2, and a filling tube 10 is passed through and fixedly connected to the surface of the filling tray 2. Through the breaking rod 9 structure, the filled powder is broken and stirred evenly, so that the subsequent filling vibration is more efficient and the powder filling is more compact.

[0023] A spring 12 is fixedly connected to the bottom of the limit block 6, and the other end of the spring 12 is fixedly connected to the top of the chassis 4. The spring 12 is arranged on the outside of the slide rod 5. A servo motor 16 is bolted to the center position of the top of the filling tray 2. The output end of the servo motor 16 passes through the top of the filling tray 2 and is provided with a main gear 15. The main gear 15 is rotatably arranged in the inner groove of the filling tray 2, and the outer side of the main gear 15 is meshed and connected with a sub gear 14. The filling tray 2 is provided with an annular groove 13 near the bottom of the sub gear 14. The top of the breaking rod 9 passes through the annular groove 13 and is fixedly connected to the bottom of the sub gear 14. The breaking rod 9 can be rotated under the filling tray 2 through the gear structure, and the breaking rod 9 follows the sub gear 14 to rotate, thereby improving the effect and efficiency of the breaking rod 9 on powder breaking.

[0024] Working principle: When in use, when the SLS laser 3D printing equipment is adding powder, the filling plate 2 below is driven by the lifting rod 11 to drop above the opening of the powder supply tank 1. At this time, the powder is added to the inside of the powder supply tank 1 through the filling tube 10. First, half of the powder in the powder supply tank 1 is added, and then the servo motor 16 is started to drive the main gear 15 to rotate, and then the main gear 15 drives the sub-gear 14 to rotate. At this time, the breaking rod 9 below follows the rotation and slides in the annular groove 13, thereby breaking the powder evenly, and then the vibration motor 8 is started, and then the vibration plate 7 slides on the chassis 4 through the slide rod 5, and then the spring 12 rebounds to achieve vibration and compaction of the broken powder. During the process, the filling device moves upward through the lifting rod 11, and after half of the powder is filled, continue to add through the filling tube 10, and then repeat the above process, and continue to fill and vibrate.

[0025] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A SLS powder feeding and filling vibration device, comprising a powder supply tank (1), characterized in that: A filling plate (2) is provided at the top position of the powder supply tank (1), a connecting rod (3) is fixedly connected to the center position of the bottom of the filling plate (2), the bottom end of the connecting rod (3) is fixedly connected to a chassis (4), a sliding rod (5) is passed through the surface of the chassis (4) and is slidably connected, a limiting block (6) is fixedly connected to the top of the sliding rod (5), a vibration plate (7) is fixedly connected to the bottom end of the sliding rod (5), a vibration motor (8) is installed on the top of the vibration plate (7), two breaking rods (9) are embedded and rotatably provided at the bottom of the filling plate (2), and a filling pipe (10) is passed through and fixedly connected to the surface of the filling plate (2).

2. The SLS powder feeding and filling vibration device according to claim 1, characterized in that: The top of the filling plate (2) is bolted to a lifting rod (11), and the lifting rod (11) is hydraulically driven and installed at the top of the SLS laser equipment.

3. The SLS powder feeding and filling vibration device according to claim 1, characterized in that: A spring (12) is fixedly connected between the bottom of the limit block (6) and the top of the chassis (4), and the spring (12) is arranged on the outside of the slide rod (5).

4. The SLS powder feeding and filling vibration device according to claim 1, characterized in that: The packing plate (2) is provided with an annular groove (13) at a bottom position close to the breaking rod (9), the breaking rod (9) slides through the annular groove (13), and one end of the breaking rod (9) close to the inner groove of the annular groove (13) is fixedly connected to a secondary gear (14).

5. The SLS powder feeding and filling vibration device according to claim 4, characterized in that: A main gear (15) is meshedly connected between the two auxiliary gears (14), and the main gear (15) is rotatably connected to the inner groove wall of the filling plate (2).

6. The SLS powder feeding and filling vibration device according to claim 5, characterized in that: A servo motor (16) is arranged above the main gear (15), and the servo motor (16) is bolted to the top of the filling plate (2) relative to the outer wall, and the output end of the servo motor (16) passes through the top of the filling plate (2) and is fixedly connected to the main gear (15).

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