Surface smoothing treatment equipment for 3D formed product

By designing a surface smoothing treatment equipment for 3D molded products including rotating frame, sliding block and laser grinder, the shortcomings in the existing equipment in grinding angle and distance adjustment are solved, higher quality 3D molded products are achieved, and the grinding efficiency is improved through automation and vacuuming functions.

CN120095676AInactive Publication Date: 2025-06-06JIUJIANG XUNWEI NEW MATERIAL CO LTD
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Patent Information

Application Number
CN202510329675.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-20
Publication Date
2025-06-06
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

When existing grinding equipment grinds 3D molded products, it is not convenient to accurately adjust the grinding angle and grinding distance, which affects the smooth surface treatment effect of 3D molded products.

Method used

A surface smoothing treatment device for 3D molded articles including a base, a placement table, a guide block and a moving mechanism is designed. The moving mechanism achieves precise adjustment of the grinding angle and distance through the combination of a rotating frame, slider, motor, friction wheel, electric push rod and laser grinder.

Benefits of technology

It realizes convenient and precise adjustment of the grinding angle and distance of 3D molded products, improves the production quality of 3D molded products, and saves manpower and improves grinding efficiency through functions such as automatic rotating frames and vacuuming mechanisms.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of production and processing of 3D formed products, in particular to surface smoothing treatment equipment for the 3D formed products. According to the surface smoothing treatment equipment for the 3D formed product, the grinding angle and the grinding distance can be conveniently and accurately adjusted, and the production quality of the 3D formed product is improved. Surface smoothing treatment equipment for 3D formed products comprises a base, a placement table, a guide block and the like, the placement table is connected to the upper side of the base, and the guide block is connected to the upper side of the middle of the placement table. A motor is started to drive a friction wheel to rotate, so that a sliding block moves on a rotating frame, a laser polisher is driven to move to change the polishing angle of a 3D formed product, during polishing, an electric push rod is started to push a fixed block to move, and the polishing distance of the laser polisher to the 3D formed product is adjusted; the effects that the grinding angle and the grinding distance can be conveniently and accurately adjusted, and the production quality of the 3D formed product is improved are achieved.
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Description

Technical Field

[0001] The present invention relates to the technical field of production and processing of 3D molded products, and in particular to a surface smoothing treatment device for 3D molded products. Background Art

[0002] 3D molded products refer to objects manufactured through 3D printing technology. 3D printing technology constructs three-dimensional objects by stacking materials layer by layer, and is widely used in many fields such as industrial manufacturing, medical treatment, architecture, education and art. In the process of making 3D molded products, 3D molded products need to be polished to improve the appearance quality and performance of the products. Due to the complex shape and structure of 3D molded products and the existence of polishing dead angles, the existing polishing equipment is not convenient for accurately adjusting the polishing angle and polishing distance of 3D molded products when polishing 3D molded products, which affects the surface smoothing effect of 3D molded products.

[0003] Therefore, a surface smoothing device for 3D molded products has been developed, which can conveniently and accurately adjust the grinding angle and grinding distance to improve the production quality of 3D molded products. Summary of the invention

[0004] In order to overcome the shortcomings of existing grinding equipment that it is not convenient to accurately adjust the grinding angle and grinding distance of 3D molded products when grinding 3D molded products, thereby affecting the surface smoothing effect of 3D molded products, the present invention provides a surface smoothing equipment for 3D molded products that can conveniently and accurately adjust the grinding angle and grinding distance to improve the production quality of 3D molded products.

[0005] A surface smoothing device for 3D molded products includes a base, a placement table, a guide block and a moving mechanism. The upper side of the base is connected to the placement table, the upper middle side of the placement table is connected to the guide block, and the guide block is provided with a moving mechanism that can improve the grinding accuracy of the 3D molded products.

[0006] Furthermore, the moving mechanism includes a rotating frame, a sliding block, a motor, a friction wheel, an electric push rod, a fixed block and a laser grinder. The rotating frame is rotatably connected to the guide block, an N-shaped groove is opened at the bottom of the rotating frame, the lower side of the rotating frame is in contact with the placement table, the upper part of the rotating frame is slidably connected to the sliding block, the front and rear sides of the sliding block are connected to the motor, the motor output shaft is connected to the friction wheel, the friction wheels are in contact with the rotating frame, the middle part of the sliding block is connected to the electric push rod, the telescopic end of the electric push rod is connected to the fixed block, and the lower side of the fixed block is connected to the laser grinder. When the motor is started, the friction wheel is driven to rotate, so that the sliding block moves on the rotating frame, and the laser grinder is driven to move to change the grinding angle of the 3D molded product. During grinding, the electric push rod is started to push the fixed block to move, and the grinding distance of the laser grinder to the 3D molded product is adjusted.

[0007] Furthermore, a rubber sleeve is provided on the friction wheel.

[0008] Furthermore, it also includes a steering mechanism, which includes a pressure plate, a fixed rod, a lower pressure frame and a first pressure spring. The upper sides of the left and right parts of the sliding block are connected to pressure plates, and a plurality of fixed rods are connected to the upper side of the placement table. The lower pressure frame is slidably connected between the fixed rods. The pressure plate and the lower pressure frame are squeezed and matched, and the rotating frame is slidably connected to the lower pressure frame through an N-shaped groove. The first pressure spring is connected between the fixed rods and the lower pressure frame. When the sliding block moves, the pressure plate is driven to move. When the sliding block moves to the end of the rotating frame, the pressure plate squeezes the lower pressure frame to move downward, and the first pressure spring is stretched. At this time, the lower pressure frame triggers the rotating frame to rotate. When the pressure plate is separated from the lower pressure frame, the first pressure spring rebounds, so that the lower pressure frame is reset, and the rotating frame does not rotate at this time.

[0009] Furthermore, it also includes a clamping mechanism, which includes a support frame, a rotating plate, a torsion spring, a connecting tube, a second pressure spring, a sliding frame and a clamping wheel. The left and right sides of the fixed block are connected to the support frames, and the supporting frames are rotatably connected to the rotating plates. The front and rear sides of the rotating plates are connected to the connected support frames with torsion springs, the rotating plates are connected to connecting tubes, the connecting tubes are slidably connected to the sliding frames, the sliding frames are connected to the connected connecting tubes with second pressure springs, and the lower side of the sliding frames is rotatably connected to the clamping wheels. When the fixed block is close to the 3D molded product, the clamping wheel contacts the surface of the 3D molded product, and the pressure wheel is always in contact with the 3D molded product through the action of the second pressure spring and the torsion spring. When the fixed block moves, the clamping wheel moves on the surface of the 3D molded product accordingly.

[0010] Furthermore, it also includes a fixing mechanism, which includes a guide rod, a clamping block and a third pressure spring. Two front and rear guide rods are connected to the middle of the placement table, and two left and right clamping blocks are slidably connected between the guide rods. The clamping blocks are slidably connected to the base, and multiple third pressure springs are connected between the clamping blocks and the base. When the 3D molded product is placed on the placement table, the 3D molded product is located between the clamping blocks, and the clamping blocks clamp the 3D molded product through the action of the third pressure spring.

[0011] Furthermore, it also includes a dust suction mechanism, which includes a fixed plate, a dust suction frame and a connecting pipe. The fixed blocks are connected to the front and rear sides, the dust suction frame is connected between the lower sides of the fixed plates, the front side of the dust suction frame is connected to the connecting pipe, the connecting pipe is connected to the fixed plate on the front side, the connecting pipe is connected to the air inlet pipe of the fan, and then the fan is started, so that the dust generated during the grinding of the 3D molded product enters the connecting pipe from the dust suction frame and is then discharged from the fan.

[0012] Further, the laser grinder passes through the dust collection frame.

[0013] Furthermore, a plurality of dust collection heads are arranged on the dust collection frame.

[0014] Furthermore, it also includes a monitoring mechanism, which includes a support plate and a camera. The lower sides of the front and rear parts of the rotating frame are connected to the support plates, and the lower sides of the support plates are connected to the cameras. The polishing conditions of the 3D molded products are photographed through the cameras on the support plates.

[0015] The beneficial effects are as follows: 1. The present invention starts the motor to drive the friction wheel to rotate, so that the sliding block moves on the rotating frame, driving the laser grinder to move and change the grinding angle of the 3D molded product. During grinding, the electric push rod is started to push the fixed block to move and adjust the grinding distance of the laser grinder to the 3D molded product, thereby achieving the effect of being able to conveniently and accurately adjust the grinding angle and grinding distance, thereby improving the production quality of 3D molded products.

[0016] 2. When the sliding block moves, the pressure plate is driven to move. When the sliding block moves to the end of the rotating frame, the pressure plate squeezes the lower pressure frame to move downward, and the first pressure spring is stretched. At this time, the lower pressure frame triggers the rotation of the rotating frame, so that after the 3D molded product is polished in one direction, the rotating frame can be automatically rotated, saving manpower and improving the polishing efficiency.

[0017] 3. When the fixed block of the present invention approaches the 3D molded product, the clamping wheel contacts the surface of the 3D molded product, and the pressure wheel is always in contact with the 3D molded product through the action of the second pressure spring and the torsion spring. When the fixed block moves, the clamping wheel moves on the surface of the 3D molded product, thereby achieving the effect of clamping the 3D molded product and preventing the 3D molded product from moving during polishing.

[0018] 4. When the 3D molded product is placed on the placement table, the present invention places the 3D molded product between the clamping blocks. The clamping blocks clamp the 3D molded product through the action of the third pressure spring, thereby achieving the effect of fixing the 3D molded product and preventing the 3D molded product from moving.

[0019] 5. The present invention connects the connecting pipe to the air inlet pipe of the fan and then starts the fan, so that the dust generated during the grinding of the 3D molded product enters the connecting pipe from the dust collection frame and is then discharged from the fan, thereby achieving the effect of timely removing the dust generated by grinding and improving the grinding quality of the 3D molded product.

[0020] 6. The present invention uses a camera on the support plate to shoot the polishing status of the 3D molded product, thereby achieving the effect of being able to monitor the polishing status of the 3D molded product in real time and ensuring the polishing quality of the 3D molded product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 2It is a partial three-dimensional structural schematic diagram of the present invention.

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the first part of the moving mechanism of the present invention.

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the second part of the moving mechanism of the present invention.

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the steering mechanism of the present invention.

[0026] Figure 6 It is a partial three-dimensional structural schematic diagram of the clamping mechanism of the present invention.

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the fixing mechanism part of the present invention.

[0028] Figure 8 It is a partial three-dimensional structural schematic diagram of the dust collection mechanism of the present invention.

[0029] Fig. 9 It is a partial three-dimensional structural schematic diagram of the monitoring mechanism of the present invention.

[0030] The names and serial numbers of the parts in the figure are: 1_base, 2_placing table, 3_guide block, 4_moving mechanism, 41_rotating frame, 42_sliding block, 43_motor, 44_friction wheel, 45_electric push rod, 451_fixed block, 46_laser grinder, 5_steering mechanism, 51_pressing plate, 52_fixing rod, 53_lower pressing frame, 54_first pressure spring, 6_pressing mechanism, 61_support frame, 62_rotating plate, 63_torsion spring, 64_connecting tube, 65_second pressure spring, 66_sliding frame, 67_pressing wheel, 7_fixing mechanism, 71_guide rod, 72_clamping block, 73_third pressure spring, 8_dust suction mechanism, 81_fixed plate, 82_dust suction frame, 83_connecting pipe, 9_monitoring mechanism, 91_support plate, 92_camera. DETAILED DESCRIPTION

[0031] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0032] A surface smoothing device for 3D molded products, such as Figure 1-Figure 9 As shown, it includes a base 1, a placement table 2, a guide block 3 and a moving mechanism 4. The placement table 2 is connected to the upper side of the base 1, the guide block 3 is connected to the upper middle side of the placement table 2, and the moving mechanism 4 is provided on the guide block 3.

[0033] like Figure 1 , Figure 3 and Figure 4As shown, the moving mechanism 4 includes a rotating frame 41, a sliding block 42, a motor 43, a friction wheel 44, an electric push rod 45, a fixed block 451 and a laser grinder 46. The rotating frame 41 is rotatably connected to the guide block 3. An N-shaped groove is opened at the lower part of the rotating frame 41. The lower side of the rotating frame 41 contacts the placement table 2. The sliding block 42 is slidably connected to the upper part of the rotating frame 41. The front and rear sides of the sliding block 42 are connected to the motor 43. The output shaft of the motor 43 is connected to the friction wheel 44. The friction wheel 44 is provided with a rubber sleeve for stable movement. The friction wheels 44 are in contact with the rotating frame 41. The middle part of the sliding block 42 is connected to the electric push rod 45. The telescopic end of the electric push rod 45 is connected to the fixed block 451. The lower side of the fixed block 451 is connected to the laser grinder 46.

[0034] When using the present invention, first place the base 1 on the surface smoothing treatment area of ​​the 3D molded product, then place the 3D molded product to be treated on the placement table 2. After placement, start the motor 43 to drive the friction wheel 44 to rotate, so that the sliding block 42 moves on the rotating frame 41, driving the laser grinder 46 to move and change the grinding angle of the 3D molded product. During grinding, start the electric push rod 45 to push the fixed block 451 to move, and adjust the grinding distance of the laser grinder 46 on the 3D molded product. After the 3D molded product is polished in one direction, the rotating frame 41 can be rotated and adjusted to change the moving path of the sliding block 42, so that the laser grinder 46 can perform all-round grinding on the 3D molded product. This plays a role in being able to conveniently and accurately adjust the grinding angle and grinding distance, and improve the production quality of 3D molded products.

[0035] like Figure 1 and Figure 5 As shown, it also includes a steering mechanism 5, which includes a pressure plate 51, a fixed rod 52, a lower pressure frame 53 and a first pressure spring 54. The upper sides of the left and right parts of the sliding block 42 are connected to the pressure plates 51, and four fixed rods 52 are connected to the upper side of the placement table 2. The lower pressure frame 53 is slidably connected between the fixed rods 52. The pressure plate 51 and the lower pressure frame 53 are squeezed together. The rotating frame 41 is slidably connected to the lower pressure frame 53 through an N-shaped groove, and the first pressure spring 54 is connected between the fixed rods 52 and the lower pressure frame 53.

[0036] The steering mechanism 5 of the present device can make the rotating frame 41 rotate automatically. When the sliding block 42 moves, the pressure plate 51 is driven to move. When the sliding block 42 moves to the end of the rotating frame 41, the pressure plate 51 squeezes the lower pressure frame 53 to move downward, and the first pressure spring 54 is stretched. At this time, the lower pressure frame 53 triggers the rotation of the rotating frame 41. When the pressure plate 51 is separated from the lower pressure frame 53, the first pressure spring 54 rebounds, so that the lower pressure frame 53 is reset. At this time, the rotating frame 41 does not rotate, thereby playing the role of automatically rotating the rotating frame 41 after grinding one direction of the 3D molded product, saving manpower and improving grinding efficiency.

[0037] like Figure 1 and Figure 6 As shown, it also includes a clamping mechanism 6, which includes a support frame 61, a rotating plate 62, a torsion spring 63, a connecting tube 64, a second pressure spring 65, a sliding frame 66 and a clamping wheel 67. The left and right sides of the fixed block 451 are connected to the support frames 61, the supporting frames 61 are rotatably connected to the rotating plates 62, the front and rear sides of the rotating plates 62 are connected to the connected support frames 61 with torsion springs 63, the rotating plates 62 are connected to the connecting tubes 64, the connecting tubes 64 are slidably connected to the sliding frames 66, the sliding frames 66 are connected to the connected connecting tubes 64 with second pressure springs 65, and the lower side of the sliding frames 66 is rotatably connected to the clamping wheel 67.

[0038] The clamping mechanism 6 of the device can be used to clamp 3D molded products. When the fixed block 451 is close to the 3D molded product, the clamping wheel 67 contacts the surface of the 3D molded product. The clamping wheel 67 is always in contact with the 3D molded product through the action of the second pressure spring 65 and the torsion spring 63. When the fixed block 451 moves, the clamping wheel 67 moves on the surface of the 3D molded product, thereby clamping the 3D molded product and preventing the 3D molded product from moving during polishing.

[0039] like Figure 1 and Figure 7 As shown, it also includes a fixing mechanism 7, which includes a guide rod 71, a clamping block 72 and a third pressure spring 73. Two front and rear guide rods 71 ​​are connected to the middle of the placement table 2, and two left and right clamping blocks 72 are slidably connected between the guide rods 71. The clamping blocks 72 are slidably connected to the base 1, and two third pressure springs 73 are connected between the clamping blocks 72 and the base 1.

[0040] The fixing mechanism 7 of the device can be used to fix the 3D molded product. When the 3D molded product is placed on the placement table 2, the 3D molded product is located between the clamping blocks 72. The clamping blocks 72 clamp the 3D molded product through the force of the third pressure spring 73, thereby fixing the 3D molded product and preventing the 3D molded product from moving.

[0041] like Figure 1 and Figure 8 As shown, a dust suction mechanism 8 is also included, and the dust suction mechanism 8 includes a fixed plate 81, a dust suction frame 82 and a connecting pipe 83. The fixed plate 81 is connected to the front and rear sides of the fixed block 451, and the dust suction frame 82 is connected between the lower sides of the fixed plates 81. The laser grinder 46 passes through the dust suction frame 82 to facilitate the suction of dust generated during grinding. Six dust suction heads are provided on the dust suction frame 82 to facilitate dust suction. The front side of the dust suction frame 82 is connected to a connecting pipe 83, and the connecting pipe 83 is connected to the fixed plate 81 on the front side.

[0042] The dust collection mechanism 8 of the device can be used to remove the dust generated by grinding. The connecting pipe 83 is connected to the air inlet pipe of the fan, and then the fan is started, so that the dust generated during the grinding of the 3D molded product enters the connecting pipe 83 from the dust collection frame 82 and is then discharged from the fan, thereby achieving the effect of timely removing the dust generated by grinding and improving the grinding quality of the 3D molded product.

[0043] like Figure 1 and Fig. 9 As shown, a monitoring mechanism 9 is also included, which includes a support plate 91 and a camera 92. The lower sides of the front and rear parts of the rotating frame 41 are connected to the support plates 91, and the lower sides of the support plates 91 are connected to the cameras 92.

[0044] By using the monitoring mechanism 9 of the present device, the polishing condition of the 3D molded product can be monitored in real time. The polishing condition of the 3D molded product can be photographed through the camera 92 on the support plate 91, thereby playing a role in real-time monitoring of the polishing condition of the 3D molded product and ensuring the polishing quality of the 3D molded product.

[0045] While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.

Claims

1. A surface smoothing device for 3D molded products, characterized by: The invention comprises a base (1), a placement table (2), a guide block (3) and a moving mechanism (4); the upper side of the base (1) is connected to the placement table (2); the middle upper side of the placement table (2) is connected to the guide block (3); and the guide block (3) is provided with a moving mechanism (4) capable of improving the grinding accuracy of 3D molded products.

2. A surface smoothing device for 3D molded products according to claim 1, characterized in that: The moving mechanism (4) comprises a rotating frame (41), a sliding block (42), a motor (43), a friction wheel (44), an electric push rod (45), a fixed block (451) and a laser grinder (46). The rotating frame (41) is rotatably connected to the guide block (3). The lower part of the rotating frame (41) is provided with an N-shaped groove. The lower side of the rotating frame (41) contacts the placing table (2). The upper part of the rotating frame (41) is slidably connected to the sliding block (42). The front and rear sides of the sliding block (42) are both connected to the motor (43). The output shaft of the motor (43) is connected to the friction wheel (44). The friction wheel (44) is in contact with the rotating frame. The movable frame (41) is in contact with each other, an electric push rod (45) is connected to the middle of the sliding block (42), a fixed block (451) is connected to the telescopic end of the electric push rod (45), and a laser grinder (46) is connected to the lower side of the fixed block (451). The motor (43) is started to drive the friction wheel (44) to rotate, so that the sliding block (42) moves on the rotating frame (41), and drives the laser grinder (46) to move to change the grinding angle of the 3D molded product. During grinding, the electric push rod (45) is started to push the fixed block (451) to move, and the grinding distance of the laser grinder (46) on the 3D molded product is adjusted.

3. A surface smoothing device for 3D formed products according to claim 2, characterized in that: The friction wheel (44) is provided with a rubber sleeve.

4. A surface smoothing device for 3D formed products according to claim 2, characterized in that: The invention also comprises a steering mechanism (5), which comprises a pressure plate (51), a fixing rod (52), a lower pressing frame (53) and a first pressure spring (54). The upper sides of the left and right parts of the sliding block (42) are both connected to the pressure plate (51). The upper side of the placing table (2) is connected to a plurality of fixing rods (52). The lower pressing frame (53) is slidably connected between the fixing rods (52). The pressure plate (51) and the lower pressing frame (53) are pressed and matched. The rotating frame (41) is slidably connected to the lower pressing frame (53) through an N-shaped groove. The fixing rods (52) are A first pressure spring (54) is connected to the lower pressure frame (53). When the sliding block (42) moves, the pressure plate (51) is driven to move. When the sliding block (42) moves to the end of the rotating frame (41), the pressure plate (51) presses the lower pressure frame (53) to move downward, and the first pressure spring (54) is stretched. At this time, the lower pressure frame (53) triggers the rotating frame (41) to rotate. When the pressure plate (51) is separated from the lower pressure frame (53), the first pressure spring (54) rebounds, so that the lower pressure frame (53) is reset. At this time, the rotating frame (41) does not rotate.

5. A surface smoothing device for 3D formed products according to claim 4, characterized in that: The clamping mechanism (6) further comprises a support frame (61), a rotating plate (62), a torsion spring (63), a connecting tube (64), a second pressure spring (65), a sliding frame (66) and a clamping wheel (67). The left and right sides of the fixed block (451) are connected to the support frame (61). The supporting frame (61) is rotatably connected to the rotating plate (62). The front and rear sides of the rotating plate (62) are connected to the connected support frame (61) with a torsion spring (63). The rotating plate (62) is connected to the connecting tube (64). The connecting tube (66) is connected to the rotating plate (62). 4) are all slidably connected to a sliding frame (66), and a second pressure spring (65) is connected between the sliding frame (66) and the connected connecting tube (64), and a clamping wheel (67) is rotatably connected to the lower side of the sliding frame (66). When the fixed block (451) approaches the 3D molded product, the clamping wheel (67) contacts the surface of the 3D molded product. The pressure of the second pressure spring (65) and the torsion spring (63) makes the clamping wheel (67) always fit the 3D molded product. When the fixed block (451) moves, the clamping wheel (67) moves on the surface of the 3D molded product.

6. A surface smoothing device for 3D formed products according to claim 5, characterized in that: The device also includes a fixing mechanism (7), which includes a guide rod (71), a clamping block (72) and a third pressure spring (73). The middle part of the placement table (2) is connected to two front and rear guide rods (71), and two left and right clamping blocks (72) are slidably connected between the guide rods (71). The clamping blocks (72) are slidably connected to the base (1), and a plurality of third pressure springs (73) are connected between the clamping blocks (72) and the base (1). When the 3D molded product is placed on the placement table (2), the 3D molded product is located between the clamping blocks (72), and the clamping blocks (72) clamp the 3D molded product through the action force of the third pressure spring (73).

7. A surface smoothing device for 3D formed products according to claim 6, characterized in that: The invention also comprises a dust collecting mechanism (8), which comprises a fixing plate (81), a dust collecting frame (82) and a connecting pipe (83). The fixing block (451) is connected to the fixing plates (81) at both the front and rear sides. The dust collecting frame (82) is connected between the lower sides of the fixing plates (81). The front side of the dust collecting frame (82) is connected to the connecting pipe (83). The connecting pipe (83) is connected to the fixing plate (81) at the front side. The connecting pipe (83) is connected to the air inlet pipe of the fan. The fan is then started, so that dust generated during the grinding of the 3D molded product enters the connecting pipe (83) from the dust collecting frame (82) and is then discharged from the fan.

8. A surface smoothing device for 3D formed products according to claim 7, characterized in that: The laser grinder (46) passes through the dust collecting frame (82).

9. A surface smoothing device for 3D formed products according to claim 7, characterized in that: A plurality of dust collecting heads are arranged on the dust collecting frame (82).

10. The surface smoothing device for 3D formed products according to claim 7, characterized in that: The device also includes a monitoring mechanism (9), which includes a support plate (91) and a camera (92). The lower sides of the front and rear parts of the rotating frame (41) are both connected to the support plate (91), and the lower sides of the support plate (91) are both connected to the camera (92). The camera (92) on the support plate (91) is used to shoot the polishing status of the 3D molded product.