3D printing piece polishing machine

Abstract

The utility model discloses a 3D printing piece polisher which comprises a base and a plurality of polishing rollers, two supporting pieces are oppositely arranged on the upper surface of the base, round through holes are formed in the supporting pieces, gear teeth are arranged on the hole walls of the round through holes in the circumferential direction, driven gears are fixedly connected to the two sides of the polishing rollers respectively, and the driven gears are located in the round through holes. A driving motor is arranged on one side of the base, the front end of an output shaft of the driving motor is connected with a driving rod, two driving gears are fixedly arranged on a rod body of the driving rod, the driving gears are located in the center of the circular through hole, the driving gears and the driven gears in the circular through hole form a planetary gear set, and grinding materials are arranged in the polishing roller. The multiple polishing rollers are linked through the planetary gear set, and therefore the purposes that the polishing efficiency is improved, and printed pieces are prevented from colliding with one another to be damaged in the polishing process are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of polishing equipment technology, and in particular relates to a polishing machine for 3D printed figurines. Background Technology

[0002] Traditional figurines rely on mold making and hand carving, which is time-consuming and costly. In contrast, 3D printed figurines use digital modeling to stack materials layer by layer, which can quickly produce complex figurines without molds, reducing development time, improving development efficiency, and reducing production costs.

[0003] 3D printed parts are created by stacking layers, which can form layer textures that affect the aesthetics of the product. The printing process also produces burrs, affecting the feel. Traditionally, polishing machines are used to polish 3D printed parts to remove burrs and layer textures. However, vibratory polishing machines use the vortex motion of abrasive particles to polish 3D printed parts. If the structure of the 3D printed part is uneven, it can lead to localized over-grinding and damage. In contrast, the centrifugal motion of roller polishing machines allows the 3D printed part to contact the abrasive in all directions, reducing the problem of uneven polishing depth. For example, Chinese utility model patent CN222537292U discloses a 3D printed part polishing machine. By incorporating polishing components, the airbag and roller rotate in opposite directions during use, resulting in higher polishing efficiency and continuous polishing. It can efficiently polish printed parts in a short time, thus solving the problem of uneven polishing material distribution causing uneven surface polishing or substandard surface quality.

[0004] However, in order to improve polishing efficiency, a drum polisher places several 3D printed parts inside the drum. These 3D printed parts collide with each other during the rolling polishing process, causing collision damage, which affects the quality of the 3D printed parts and increases the damage rate. Utility Model Content

[0005] The purpose of this invention is to set up several polishing rollers, which are connected by a planetary gear set. The drive motor drives the polishing rollers to rotate on their own axis and revolve around a drive rod, so as to solve the problem in the background art where several 3D printed parts collide with each other and cause collision damage when they are rolled and polished in one roller.

[0006] The specific technical solution of this utility model is as follows:

[0007] A 3D printed part polishing machine includes a base and several polishing rollers. Two support members are arranged opposite each other on the upper surface of the base. The support members have through holes, and the walls of the through holes are provided with gear teeth in the circumferential direction. Driven gears are fixedly connected to both sides of the polishing rollers. The driven gears are located in the through holes and mesh with the gear teeth on the walls of the through holes. A drive motor is provided on one side of the base. The front end of the output shaft of the drive motor is connected to a drive rod. Two drive gears are fixedly installed on the rod. The drive gears are located at the center of the through holes. The drive gears and the several driven gears in the through holes form a planetary gear set. Abrasive is provided inside the polishing rollers.

[0008] Furthermore, the diameter of the drive gear is smaller than that of the driven gear, and the drive gear and several driven gears in the through hole form a planetary reduction gear set.

[0009] Furthermore, a counterweight is installed on the upper surface of the base, and a drive motor is installed on the upper surface of the counterweight.

[0010] Furthermore, the lower surface of the base is provided with several threaded holes, each containing a threaded rod, and the bottom of the threaded rod is provided with a support foot.

[0011] Furthermore, the through hole has a circumferentially oriented limiting groove on its wall, and the bottom of the limiting groove has circumferentially oriented gear teeth.

[0012] Furthermore, the polishing roller includes a cylinder body, an inner polishing cavity inside the cylinder body containing abrasive, and a cylinder cover that is detachably fixed to the top of the cylinder body.

[0013] Furthermore, the top of the cylinder is provided with a recessed platform, the upper surface of which is provided with a sealing horizontal groove, the inner surfaces on both sides of the recessed platform are provided with sealing vertical grooves, the bottom of the cylinder cover is provided with a sealing horizontal strip that matches the sealing horizontal groove, and the outer surfaces on both sides of the cylinder cover are provided with sealing vertical strips that match the sealing vertical groove.

[0014] Furthermore, there are two horizontal sealing grooves, located on both sides of the upper surface of the platform, and four vertical sealing grooves, located in pairs on the inner surfaces of both sides of the platform.

[0015] Furthermore, the polishing inner cavity has a concave arc surface in cross section, and several partitions are slidably connected inside the polishing inner cavity. The lower surface of the cylinder cover has a concave surface, which fits against the top of the partition.

[0016] Furthermore, the side of the partition plate is fitted with the concave arc surface, the concave arc surface is provided with several limiting grooves, and the partition plate is provided with limiting sliders that are matched with the limiting grooves. The partition plate achieves sliding connection with the polishing cavity through the sliding cooperation of the limiting grooves and the limiting sliders.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] To polish a 3D printed part, open the cylinder cover, adjust the partition to the appropriate position to divide the polishing cavity into several chambers, and then place the 3D printed part into each chamber, one 3D printed part per chamber. Add abrasive to the chambers, close the cylinder cover, and start the drive motor to make the polishing roller rotate on its own axis and revolve around the center. This allows the abrasive in the polishing roller to polish the 3D printed part. Since each chamber contains only one 3D printed part, collisions and damage during the rolling polishing process are avoided, reducing the damage rate of the 3D printed part during polishing. Furthermore, with multiple polishing rollers, multiple 3D printed parts can be polished simultaneously, improving polishing efficiency. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0020] Figure 2 This is an assembly drawing of the polishing roller and drive rod in an embodiment of this utility model;

[0021] Figure 3 This is a three-dimensional structural diagram of the base in an embodiment of the present utility model;

[0022] Figure 4 This is an exploded view of the assembly of the cylinder and the cylinder cover in an embodiment of this utility model;

[0023] Figure 5 This is a schematic diagram of the bottom structure of the cylinder cover in an embodiment of this utility model;

[0024] Figure 6 This is a three-dimensional structural diagram of the partition in an embodiment of the present utility model;

[0025] Figure label:

[0026] 1. Base; 11. Support component; 12. Through hole; 121. Limiting groove;

[0027] 2. Polishing roller; 21. Cylinder body; 211. Polishing inner cavity; 2111. Limiting groove; 212. Countersunk platform; 2121. Sealing horizontal groove; 2122. Sealing vertical groove; 22. Cylinder cover; 221. Sealing horizontal bar; 222. Sealing vertical bar; 223. Concave surface; 23. Driven gear; 24. Partition plate; 241. Limiting slider;

[0028] 3. Drive motor;

[0029] 4. Drive rod; 41. Drive gear;

[0030] 5. Counterweight;

[0031] 6. Threaded rod; 61. Support leg. Detailed Implementation

[0032] To better understand the purpose, structure, and function of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0033] See Figures 1 to 6 This embodiment discloses a 3D printed part polishing machine, including a base 1 and several polishing rollers 2. In this embodiment, three polishing rollers 2 are provided. Two support members 11 are provided opposite each other on the upper surface of the base 1. The support members 11 have through holes 12. The central axes of the through holes 12 on the two support members 11 coincide. The cylindrical hole walls of the through holes 12 are provided with gear teeth in the circumferential direction. Metal shafts are respectively connected to the outer surfaces of the two sides of the polishing rollers 2. The polishing rollers 2 are made of rubber and are connected to the metal shafts by adhesive bonding. A driven gear 23 is welded to the end of the metal shaft. The driven gear 23 is located in the through hole 12 and meshes with the gear teeth on the hole wall of the through hole 12. The base 1 has a drive motor 3 on one side. The output shaft of the drive motor 3 is connected to a drive rod 4 via a coupling. Two drive gears 41 are fixed on the rod body of the drive rod 4. The two drive gears 41 are located in two through holes 12 respectively. The drive gears 41 are located at the center of the through holes 12. The drive gears 41 and several driven gears 23 in the through holes 12 form a planetary gear set. When the drive gears 41 rotate, they drive the polishing roller 2 to rotate on its own axis and revolve around the drive rod 4. The polishing roller 2 contains abrasive. It can be further optimized and limited that the abrasive is a high-purity aluminum silicate powder abrasive with a particle size of 0.1~10μm, which provides gentle polishing and reduces scratches.

[0034] The diameter of the drive gear 41 is smaller than the diameter of the driven gear 23. The drive gear 41 and several driven gears 23 in the through hole 12 form a planetary reduction gear set to prevent the drive motor 3 from rotating too fast and damaging the 3D printed parts.

[0035] A counterweight 5 is installed on the upper surface of the base 1 by fastening screws. A drive motor 3 is installed on the upper surface of the counterweight 5 by fastening screws. The counterweight 5 can stabilize the drive motor 3 and prevent the drive motor 3 from vibrating during operation, which would cause the base 1 to vibrate and shift.

[0036] The lower surface of the base 1 is provided with several threaded holes in an array. In this embodiment, four threaded holes are provided. The rectangular array is distributed on the lower surface of the base 1. A threaded rod 6 is provided in the threaded hole. The bottom of the threaded rod 6 is provided with a support foot 61. The support foot 61 is disc-shaped and can stabilize the base 1. The level of the base 1 can be adjusted by adjusting the depth of the threaded rod 6 in the threaded hole, so that the base 1 can adapt to the sloping platform.

[0037] The through hole 12 has a circumferentially ...

[0038] The polishing roller 2 includes a cylinder 21, and a polishing cavity 211 is provided inside the cylinder 21. Abrasive is placed in the polishing cavity 211. A cylinder cover 22 is detachably fixed to the top of the cylinder 21. In this embodiment, the cylinder 21 and the cylinder cover 22 are connected by several hexagonal bolts.

[0039] The top of the cylinder 21 is provided with a recessed platform 212. A sealing transverse groove 2121 is provided on the upper surface of the recessed platform 212. Sealing vertical grooves 2122 are provided on the inner surfaces of both sides of the recessed platform 212. The bottom of the cylinder cover 22 is provided with sealing horizontal strips 221 that cooperate with the sealing transverse grooves 2121. Sealing vertical strips 222 that cooperate with the sealing vertical grooves 2122 are provided on the outer surfaces of both sides of the cylinder cover 22. There are two sealing transverse grooves 2121, located on both sides of the upper surface of the recessed platform 212. There are four sealing vertical grooves 2122, located in pairs opposite each other on the inner surfaces of both sides of the recessed platform 212. When the cylinder cover 22 is closed... When the cylinder 21 is in use, the sealing horizontal strip 221 is inserted into the sealing horizontal groove 2121, and the sealing vertical strip 222 is inserted into the sealing vertical groove 2122. This can effectively prevent the abrasive in the polishing inner cavity 211 from leaking out from the gap between the contact surface of the cylinder 21 and the cylinder cover 22 when the polishing roller 2 rotates. The cylinder 21 and the cylinder cover 22 are made of rubber and have a certain elasticity. The sealing horizontal strip 221, the sealing vertical strip 222 and the cylinder cover 22 are integrally formed. The rubber material can prevent the 3D printed parts from colliding with the cylinder 21 and the cylinder cover 22 during polishing and causing collision damage.

[0040] The polishing inner cavity 211 has a concave arc surface in cross section. Several partitions 24 are slidably connected inside the polishing inner cavity 211. The partitions 24 are placed vertically in the polishing inner cavity 211 and are perpendicular to the cylinder 21. The partitions 24 are made of rubber. The rubber material can prevent the 3D printed parts from colliding with the partitions 24 during polishing and causing collision damage. In this embodiment, there are two partitions 24, which can divide the polishing inner cavity 211 into up to three chambers. The lower surface of the cylinder cover 22 has a concave surface 223. The concave surface 223 fits against the top of the partitions 24. When the cylinder cover 22 is placed on the cylinder 21 and the internal hex bolts are tightened, the concave surface 223 can press the partitions 24 against the concave arc surface to prevent the partitions 24 from shaking during polishing.

[0041] The side of the partition 24 is in contact with the concave arc surface. When the cylinder cover 22 is placed on the cylinder 21, the side of the partition 24 is in contact with the concave arc surface and the concave surface 223. The concave arc surface is provided with several limiting slide grooves 2111. In this embodiment, there are three limiting slide grooves 2111, which are located on both sides and the bottom of the concave arc surface, respectively. The partition 24 is provided with limiting sliders 241 that are matched with the limiting slide grooves 2111. The partition 24 achieves sliding connection with the polishing cavity 211 through the sliding cooperation of the limiting slide grooves 2111 and the limiting sliders 241. In this embodiment, there are three limiting slide grooves 2111, which are located on both sides and the bottom of the concave arc surface, making the position of the partition 24 more stable when sliding and preventing it from shifting. According to the size of the 3D printed part, the position of the partition 24 in the polishing cavity 211 can be adjusted to adapt to the 3D printed part.

[0042] The 3D printed polishing machine is equipped with a control switch to control the start and stop of the drive motor 3. This feature can be achieved using existing technologies and solutions.

[0043] To polish a 3D printed part, open the cylinder cover 22, adjust the partition 24 to the appropriate position according to the size of the 3D printed part, divide the polishing cavity 211 into several chambers, and then put the 3D printed part into the chamber, one 3D printed part in each chamber. Add abrasive to the chamber, close the cylinder cover 22, tighten the hex bolts, start the drive motor 3, drive the polishing roller 2 to rotate and revolve, so that the abrasive in the polishing roller 2 polishes the 3D printed part.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A 3D printed part polishing machine, characterized in that: The device includes a base (1) and several polishing rollers (2). Two support members (11) are provided on the upper surface of the base (1). The support members (11) are provided with a through hole (12). The hole wall of the through hole (12) is provided with gear teeth in the circumferential direction. Driven gears (23) are fixedly connected to both sides of the polishing rollers (2). The driven gears (23) are located in the through hole (12) and mesh with the gear teeth on the hole wall of the through hole (12). A drive motor (3) is provided on one side of the base (1). The output shaft of the drive motor (3) is connected to a drive rod (4). Two drive gears (41) are fixedly provided on the rod body of the drive rod (4). The drive gears (41) are located at the center of the through hole (12). The drive gears (41) and several driven gears (23) in the through hole (12) form a planetary gear set. Abrasive is provided in the polishing rollers (2).

2. The 3D printed parts polishing machine according to claim 1, characterized in that, The diameter of the drive gear (41) is smaller than the diameter of the driven gear (23). The drive gear (41) and several driven gears (23) in the through hole (12) form a planetary reduction gear set.

3. The 3D printed part polishing machine according to claim 1, characterized in that, A counterweight (5) is installed on the upper surface of the base (1), and a drive motor (3) is installed on the upper surface of the counterweight (5).

4. The 3D printed part polishing machine according to claim 1, characterized in that, The lower surface of the base (1) is provided with several threaded holes, and a threaded rod (6) is provided in the threaded hole. The bottom of the threaded rod (6) is provided with a foot (61).

5. The 3D printed parts polishing machine according to claim 1, characterized in that, The through hole (12) has a circumferentially provided limiting groove (121) on the hole wall, and the bottom of the limiting groove (121) has circumferentially provided gear teeth.

6. The 3D printed part polishing machine according to claim 1, characterized in that, The polishing roller (2) includes a cylinder (21), a polishing cavity (211) is provided inside the cylinder (21), abrasive is placed in the polishing cavity (211), and a cylinder cover (22) is detachably fixed to the top of the cylinder (21).

7. The 3D printed part polishing machine according to claim 6, characterized in that, The top of the cylinder (21) is provided with a recessed platform (212), the upper surface of the recessed platform (212) is provided with a sealing horizontal groove (2121), the inner surfaces of both sides of the recessed platform (212) are provided with sealing vertical grooves (2122), the bottom of the cylinder cover (22) is provided with a sealing horizontal strip (221) that matches the sealing horizontal groove (2121), and the outer surfaces of both sides of the cylinder cover (22) are provided with a sealing vertical strip (222) that matches the sealing vertical groove (2122).

8. The 3D printed part polishing machine according to claim 7, characterized in that, There are two sealing horizontal grooves (2121), located on both sides of the upper surface of the sinking platform (212), and four sealing vertical grooves (2122), located opposite each other on the inner surfaces of both sides of the sinking platform (212).

9. The 3D printed part polishing machine according to claim 6, characterized in that, The polishing inner cavity (211) has a concave arc surface in cross section. Several partitions (24) are slidably connected inside the polishing inner cavity (211). The lower surface of the cylinder cover (22) is provided with a concave surface (223), which is in contact with the top of the partition (24).

10. The 3D printed part polishing machine according to claim 9, characterized in that, The side of the partition (24) is in contact with the concave arc surface, and the concave arc surface is provided with several limiting grooves (2111). The partition (24) is provided with a limiting slider (241) that is matched with the limiting groove (2111). The partition (24) achieves sliding connection with the polishing cavity (211) through the sliding cooperation between the limiting groove (2111) and the limiting slider (241).

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