A 3D printing post-processing device and process for improving product yield

Abstract

The application discloses a kind of 3D printing post-processing device of improving product yield, comprising: first drive motor, second drive motor, mounting bracket, first visual detection device and second visual detection device, cylindrical product is fixedly installed in the output end of first drive motor, second drive motor is set in first drive motor side, second drive motor is slidably connected on the first slide rail of mounting bracket, the output end of second drive motor is connected brush, brush surface contacts cylindrical product surface, the rotating direction of brush is opposite with the rotating direction of cylindrical product, first visual detection device and second visual detection device are symmetrically arranged in the two sides of cylindrical product.The application also discloses a kind of 3D printing post-processing process of improving product yield.Compared with prior art, brush can be according to the distribution area of granular protrusion on the surface of cylindrical product, targeted polishing is carried out, avoid excessive polishing on the surface of product, improve the quality of product surface.

Description

Technical Field

[0001] This invention belongs to the field of 3D printing, and particularly relates to a 3D printing post-processing device and process for improving product yield. Background Technology

[0002] Fused deposition modeling (FDM) is the most widely used 3D printing technology. Fused deposition modeling (FDM), also known as fused filament fabrication (FFF), is an additive manufacturing process belonging to the material extrusion family. In FDM, objects are built by selectively depositing molten material layer by layer along a predetermined path. The material used is a thermoplastic polymer in filament form. After the 3D printed model is completed, some printing marks will remain on its surface, requiring post-processing to achieve the desired effect, such as sanding and polishing.

[0003] Cylindrical products made from existing hot melt materials using 3D printing have 70% to 80% of their surface with granular protrusions, which usually need to be polished with a brush to ensure a smooth surface.

[0004] Currently, when polishing the surface of cylindrical products, the process simply involves using a brush that is the same height as the cylindrical product and rotating it for polishing. This fails to target the areas with granular protrusions, leading to over-polishing of the cylindrical product surface and affecting its quality. Summary of the Invention

[0005] The purpose of this invention is to provide a 3D printing post-processing device and process to improve product yield. The brush can perform targeted polishing according to the distribution area of ​​granular protrusions on the surface of cylindrical products, avoiding over-polishing of the product surface and improving the quality of the product surface.

[0006] To achieve the above objectives, the present invention provides a 3D printing post-processing device for improving product yield, comprising: a first drive motor, a second drive motor, a mounting frame, a first vision inspection device, and a second vision inspection device. A cylindrical product is fixedly mounted on the output end of the first drive motor, and the second drive motor is disposed on one side of the first drive motor. The second drive motor is slidably connected to a first slide rail of the mounting frame. The output end of the second drive motor is connected to a brush, the surface of which contacts the surface of the cylindrical product. The rotation direction of the brush is opposite to the rotation direction of the cylindrical product. The first vision inspection device and the second vision inspection device are symmetrically arranged on both sides of the cylindrical product.

[0007] As a further description of the above technical solution:

[0008] The mounting bracket is slidably connected to the second slide rail of the base, which is perpendicular to the first slide rail.

[0009] As a further description of the above technical solution:

[0010] The cylindrical product has a blow pipe on one side for blowing gas.

[0011] On the other hand, the present invention also provides a 3D printing post-processing technology to improve product yield, including the following steps:

[0012] S1. Fix the cylindrical product to the output end of the first drive motor, and fix the brush to the output end of the second drive motor.

[0013] S2, the first vision inspection device and the second vision inspection device detect the distribution of granular protrusions on the surface of the cylindrical product in the height direction from both sides of the cylindrical product, and transmit the data to the processor;

[0014] S3. The processor calculates the polishing time of the brush on the surface of cylindrical products at different heights based on the distribution of granular protrusions on the surface of the cylindrical product in the height direction, and sets the polishing path of the brush.

[0015] S4. The first drive motor drives the cylindrical product to rotate in the forward direction, and the second drive motor drives the brush to rotate in the reverse direction. The brush moves up and down according to the set polishing path to complete the polishing.

[0016] As a further description of the above technical solution:

[0017] In step S2, when detecting the distribution of granular protrusions on the surface of the cylindrical product in the height direction, the surface of the cylindrical product is divided into three parts, namely the lower surface, the middle surface and the upper surface from bottom to top, and the number of granular protrusions in the three regions of the lower surface, the middle surface and the upper surface is counted respectively.

[0018] As a further description of the above technical solution:

[0019] In step S3, when calculating the polishing time of the brush on the surface of cylindrical products of different heights, the calculation is based on the number of granular protrusions in each part of the cylindrical product surface. When the number of granular protrusions in a part is less than or equal to 20, the polishing time is T1; when the number of granular protrusions in a part is greater than 20 but less than 50, the polishing time is T2; when the number of granular protrusions in a part is greater than or equal to 50, the polishing time is T3, where T3 > T2 > T1.

[0020] As a further description of the above technical solution:

[0021] In step S4, while the brush is polishing the surface of the cylindrical product, the blower pipe blows gas onto the cylindrical product to clean up the debris generated during polishing.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0023] 1. In this invention, when polishing the granular protrusions on the surface of a cylindrical product, the cylindrical product is fixedly installed at the output end of a first drive motor. A first visual inspection device and a second visual inspection device, symmetrically arranged on both sides, detect the distribution of the granular protrusions on the surface of the cylindrical product in the height direction. Based on the distribution, the polishing time for cylindrical product surfaces of different heights is calculated, thereby setting the polishing path of the brush. The brush moves up and down according to the set polishing path to complete the polishing. The brush can perform targeted polishing according to the distribution area of ​​the granular protrusions on the surface of the cylindrical product, avoiding over-polishing and improving the quality of the product surface.

[0024] 2. In this invention, a blow pipe for blowing gas is provided on one side of the cylindrical product. The blow pipe blows gas onto the cylindrical product to clean up the debris generated during polishing, ensuring the cleanliness of the cylindrical product surface and ensuring the polishing effect. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a side view structural diagram of a 3D printing post-processing device for improving product yield.

[0027] Figure 2 This is a top-view structural diagram of a 3D printing post-processing device for improving product yield.

[0028] Legend:

[0029] 1. First drive motor; 2. Second drive motor; 21. Brush; 3. Mounting bracket; 31. First slide rail; 4. First vision inspection device; 5. Second vision inspection device; 6. Cylindrical product; 7. Base; 71. On the second slide rail; 8. Blow pipe. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0032] Please see Figure 1-2 On one hand, the present invention provides a 3D printing post-processing device for improving product yield, comprising: a first drive motor 1, a second drive motor 2, a mounting frame 3, a first vision inspection device 4, and a second vision inspection device 5. A cylindrical product 6 is fixedly mounted on the output end of the first drive motor 1. The second drive motor 2 is disposed on one side of the first drive motor 1 and is slidably connected to the first slide rail 31 of the mounting frame 3. The output end of the second drive motor 2 is connected to a brush 21. The surface of the brush 21 contacts the surface of the cylindrical product 6. The rotation direction of the brush 21 is opposite to the rotation direction of the cylindrical product 6. The first vision inspection device 4 and the second vision inspection device 5 are symmetrically arranged on both sides of the cylindrical product 6.

[0033] The mounting bracket 3 is slidably connected to the second slide rail 71 of the base 7, and the second slide rail 71 is perpendicular to the first slide rail 31. The sliding of the mounting bracket 3 on the second slide rail 71 is used to control the back-and-forth movement of the brush 21 so that it contacts or detaches from the surface of the cylindrical product 6; on the other hand, it can control the distance between the brush 21 and the surface of the cylindrical product 6 according to the degree of protrusion of the granular protrusions to ensure the polishing effect.

[0034] A blow pipe 8 for blowing gas is provided on one side of the cylindrical product 6. The blow pipe 8 blows gas into the cylindrical product 6 to clean up the debris generated during polishing, ensuring the cleanliness of the surface of the cylindrical product 6 and ensuring the polishing effect.

[0035] On the other hand, the present invention also provides a 3D printing post-processing technology to improve product yield, including the following steps:

[0036] S1. Fix the cylindrical product 6 to the output end of the first drive motor 1, and fix the brush 21 to the output end of the second drive motor 2.

[0037] S2, the first visual inspection device 4 and the second visual inspection device 5 detect the distribution of granular protrusions on the surface of the cylindrical product 6 in the height direction from both sides of the cylindrical product 6 and transmit the data to the processor. When counting, the surface of the cylindrical product 6 is divided into three parts, from bottom to top: the lower surface, the middle surface and the upper surface. When detecting the distribution of granular protrusions on the surface of the cylindrical product 6 in the height direction, the number of granular protrusions in the three regions of the lower surface, the middle surface and the upper surface are counted respectively. The height of the brush 21 is equal to the height of the cylindrical product 6. The brush 21 is also divided into three parts in the height direction, corresponding to the lower surface, the middle surface and the upper surface of the cylindrical product 6.

[0038] S3. The processor calculates the polishing time of the brush 21 on the surface of the cylindrical product 6 at different heights based on the distribution of the granular protrusions on the surface of the cylindrical product 6 in the height direction. The polishing time is calculated in stages according to the number of granular protrusions in each part of the surface of the cylindrical product 6. When the number of granular protrusions in a part is less than or equal to 20, the polishing time is T1; when the number of granular protrusions in a part is greater than 20 but less than 50, the polishing time is T2; when the number of granular protrusions in a part is greater than or equal to 50, the polishing time is T3, T3 > T2 > T1. The polishing path of the brush 21 is set.

[0039] S4. The first drive motor 1 drives the cylindrical product 6 to rotate in the forward direction, and the second drive motor 2 drives the brush 21 to rotate in the reverse direction. The brush 21 moves up and down according to the set polishing path to complete the polishing.

[0040] When setting the polishing path of brush 21, it is assumed that the upper surface of cylindrical product 6 has 60 granular protrusions and the polishing time T3 is 60 seconds, the middle surface of cylindrical product 6 has 40 granular protrusions and the polishing time T2 is 40 seconds, and the lower surface of cylindrical product 6 has 10 granular protrusions and the polishing time T1 is 20 seconds.

[0041] At this point, the polishing path of brush 21 is as follows: brush 21 moves to a height consistent with the height of cylindrical product 6, polishes for 20 seconds; then it moves backward to detach from cylindrical product 6, moves upward until the lower part of brush 21 is aligned with the middle surface of cylindrical product 6, and then moves forward to contact cylindrical product 6, continuing to polish for 20 seconds; then it moves backward to detach from cylindrical product 6, moves upward until the lower part of brush 21 is aligned with the upper surface of cylindrical product 6, and then moves forward to contact cylindrical product 6, continuing to polish for 20 seconds. The polishing path of brush 21 in other cases follows the same principle.

[0042] In step S4, while the brush 21 is polishing the surface of the cylindrical product 6, the blower pipe 8 blows gas onto the cylindrical product 6 to clean up the debris generated during polishing, ensuring the cleanliness of the surface of the cylindrical product 6 and guaranteeing the polishing effect. To prevent the cylindrical product 6 from overheating and deforming during polishing, which would affect the polishing effect, the air blown out by the blower pipe 8 is cold air cooled by a cooling device.

[0043] Working principle: When polishing the granular protrusions on the surface of the cylindrical product 6, the cylindrical product 6 is fixedly installed at the output end of the first drive motor 1. The distribution of the granular protrusions on the surface of the cylindrical product 6 in the height direction is detected by the first vision detection device 4 and the second vision detection device 5 arranged symmetrically on both sides. The polishing time of the cylindrical product 6 at different heights is calculated based on the distribution. The polishing path of the brush 21 is then set. The brush 21 moves up and down according to the set polishing path to complete the polishing.

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

Claims

1. A 3D printing post-processing technology to improve product yield, characterized in that, Includes the following steps: S1. Fix the cylindrical product (6) to the output end of the first drive motor (1) and fix the brush (21) to the output end of the second drive motor (2); S2. The first visual inspection device (4) and the second visual inspection device (5) detect the distribution of granular protrusions on the surface of the cylindrical product (6) in the height direction from both sides of the cylindrical product (6) and transmit the data to the processor. When detecting the distribution of granular protrusions on the surface of the cylindrical product (6) in the height direction, the surface of the cylindrical product (6) is divided into three parts, from bottom to top: the lower surface, the middle surface and the upper surface. The number of granular protrusions in the three regions of the lower surface, the middle surface and the upper surface is counted respectively. S3. The processor calculates the polishing time of the brush (21) on the surface of the cylindrical product (6) at different heights based on the distribution of the granular protrusions on the surface of the cylindrical product (6) in the height direction. When calculating the polishing time of the brush (21) on the surface of the cylindrical product (6) at different heights, the processor calculates the polishing time in stages based on the number of granular protrusions in each part of the surface of the cylindrical product (6). When the number of granular protrusions in a part is less than or equal to 20, the polishing time is T1; when the number of granular protrusions in a part is greater than 20 and less than 50, the polishing time is T2; when the number of granular protrusions in a part is greater than or equal to 50, the polishing time is T3, T3 > T2 > T1. The polishing path of the brush (21) is set. S4. The first drive motor (1) drives the cylindrical product (6) to rotate in the forward direction, and the second drive motor (2) drives the brush (21) to rotate in the reverse direction. The brush (21) moves up and down according to the set polishing path to complete the polishing.

2. The 3D printing post-processing technology for improving product yield according to claim 1, characterized in that, In step S4, when the brush (21) polishes the surface of the cylindrical product (6), the blow pipe (8) blows gas onto the cylindrical product (6) to clean up the debris generated during polishing.

3. A 3D printing post-processing device for improving product yield, characterized in that, The 3D printing post-processing technology for improving product yield as described in claim 1 or 2 includes: a first drive motor (1), a second drive motor (2), a mounting frame (3), a first vision inspection device (4), and a second vision inspection device (5). A cylindrical product (6) is fixedly installed at the output end of the first drive motor (1). The second drive motor (2) is located on one side of the first drive motor (1). The second drive motor (2) is slidably connected to the first slide rail (31) of the mounting frame (3). The output end of the second drive motor (2) is connected to a brush (21). The surface of the brush (21) contacts the surface of the cylindrical product (6). The rotation direction of the brush (21) is opposite to the rotation direction of the cylindrical product (6). The first vision inspection device (4) and the second vision inspection device (5) are symmetrically arranged on both sides of the cylindrical product (6).

4. The 3D printing post-processing device for improving product yield according to claim 3, characterized in that, The mounting bracket (3) is slidably connected to the second slide rail (71) of the base (7), and the second slide rail (71) is perpendicular to the first slide rail (31).

5. The 3D printing post-processing device for improving product yield according to claim 3, characterized in that, The cylindrical product (6) has a blow pipe (8) for blowing gas on one side.

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