3D printer workbench waste cleaning device and working method thereof

Abstract

The application discloses a 3D printer workbench waste cleaning device and a working method thereof, and belongs to the technical field of 3D printer devices. The 3D printer comprises a frame, a two-axis moving mechanism is installed on the frame, a printing mechanism and a cleaning mechanism are carried on the two-axis moving mechanism, the cleaning mechanism comprises a linear module, an L-shaped mounting seat is installed on the linear module, a shaft rod is installed on the L-shaped mounting seat through a bearing, a movable seat is installed at the bottom end of the shaft rod, and a scraper assembly is installed on the bottom side surface of the movable seat. The cleaning mechanism with the scraper assembly is integrated on the two-axis moving mechanism, the two-axis moving mechanism drives the cleaning mechanism to move, and the automatic and programmed cleaning of the waste on the surface of the workbench is realized; compared with the traditional manual scraping, the method completely eliminates the risk of scratching the surface of the expensive workbench due to uneven force or improper angle, and protects the equipment; and the automatic reciprocating scraping path planning is comprehensive and the cleaning is more thorough.

Description

Technical Field

[0001] This invention relates to the field of 3D printer device technology, and in particular to a 3D printer worktable waste cleaning device and its working method. Background Technology

[0002] In mainstream 3D printing technologies such as fused deposition modeling (FDM) and photopolymerization, after printing, there are often solidified waste residues such as printing supports, base plates, and model overflow between the model and the printing platform (worktable). If these residues are not thoroughly removed, they will directly affect the adhesion of the model's base plate and the printing accuracy in the next print, and may even damage the high-precision worktable surface (such as heated glass plates, coatings, etc.), thus significantly impacting the efficiency of continuous printing operations and the quality of the finished product.

[0003] Currently, the mainstream method for cleaning waste from 3D printer workbenches still heavily relies on manual operation. Operators typically use handheld tools such as scrapers and shovels, relying on experience and feel to scrape and clean the workbench surface. However, manual operation is difficult to control in terms of force and angle, and it is easy to scratch or damage the expensive workbench surface due to excessive force or improper angle, increasing the equipment maintenance cost. In addition, manual cleaning is inefficient. Summary of the Invention

[0004] This invention provides a waste cleaning device for a 3D printer workbench and its working method, which can solve the problem that the force and angle are difficult to control in manual operation in the prior art.

[0005] A waste cleaning device for a 3D printer workbench, the 3D printer including a frame, a two-axis moving mechanism mounted on the frame, and a printing mechanism mounted on the two-axis moving mechanism; a workbench is arranged inside the frame directly below the two-axis moving mechanism, and both sides of the workbench are connected to a lifting mechanism, the lifting mechanism including a lead screw driven by a motor and at least one guide rod, and a lead screw nut seat cooperating with the lead screw is provided on the workbench; at least one cleaning mechanism is also mounted on the two-axis moving mechanism, the cleaning mechanism including a straight module, and an L-shaped mounting base is mounted on the straight module. A shaft is mounted on the mounting base via a bearing; a gear is mounted on one end of the shaft, and a movable seat is mounted on the other end. A scraper assembly is mounted on the bottom side of the movable seat; a mounting part is fixed on the linear module located between the movable seat and the L-shaped mounting base. The mounting part has a through hole for the shaft to pass through, and four positioning holes are distributed around the through hole. At least one positioning rod is fixed on the upper surface of the movable seat, passing through the positioning holes; a gear is mounted on the end of the lead screw that rotates synchronously with the lead screw. When the two-axis moving mechanism drives the cleaning mechanism to move to both sides of the frame, the gear and the gear mesh.

[0006] Furthermore, the frame includes a base, on the upper surface of which are fixed four rectangularly distributed columns, and a connecting beam connects two adjacent columns; an installation beam is also connected between two columns located between the connecting beam and the base; the two-axis moving mechanism is installed between two oppositely arranged installation beams.

[0007] Furthermore, the two-axis moving mechanism consists of a first linear structure and a second linear structure. The second linear structure and the first linear structure are identical, both including an L-shaped base one and an L-shaped base two arranged opposite to each other. A motor two is fixed on the L-shaped base one, and the output end of the motor two is connected to a lead screw two through a coupling one. A bearing seat one for mounting the lead screw two is fixed on the L-shaped base two. A pair of guide columns are also connected between the L-shaped base one and the L-shaped base two. It also includes a sliding seat, which has a mounting hole one and a mounting hole two. A guide sleeve one that cooperates with the guide column is installed in the mounting hole one, and a lead screw nut seat two that cooperates with the lead screw two is installed in the mounting hole two. The L-shaped base one and L-shaped base two at both ends of the first linear structure are respectively fixed on two mounting beams. The L-shaped base one and L-shaped base two at both ends of the second linear structure are respectively fixed on two sliding seats of the first linear structure. Furthermore, the bottom end of the lead screw is connected to the output end of the motor through a coupling, and a bearing seat for mounting the lead screw is fixed on the mounting beam; a fixing seat for mounting the guide rod is fixed on the mounting beam, the bottom end of the guide rod is fixed to the upper surface of the base, and a guide sleeve 2 that mates with the guide rod is installed on the edge side of the worktable.

[0008] Furthermore, the linear module includes a base plate, the mounting part is integrally bent and formed at the bottom end of the base plate, a top plate is fixed at the top end of the base plate, a motor is mounted on the top plate, and the output end of the motor is connected to a lead screw via a coupling. A pair of bearing seats with a gap are mounted on the inner wall of the base plate, and the two ends of the lead screw are respectively mounted on the two bearing seats. Guide rails are mounted on the inner wall of the base plate on both sides of the lead screw. A slide seat that mates with the guide rail is mounted on the back of the L-shaped mounting seat, and a lead screw nut seat that mates with the lead screw is mounted on the back of the L-shaped mounting seat.

[0009] Furthermore, the scraper assembly includes a clamping seat one and a clamping seat two disposed opposite to each other, a groove for fixing the scraper is formed between the clamping seat one and the clamping seat two, and a locking bolt with a threaded end on the clamping seat one and / or the clamping seat two abuts against the scraper. Both the clamping seat one and the clamping seat two are fixed to the bottom side of the movable seat by fixing bolts.

[0010] Furthermore, the angle between the scraper and the upper surface of the worktable is in the range of 60°-85°, and the cross-sections of both clamp one and clamp two are L-shaped.

[0011] Furthermore, a cleaning mechanism is installed at each end of the sliding seat.

[0012] A method for operating a waste cleaning device includes the following steps: Step 1: Control the linear module to move the scraper assembly downwards until the bottom of the scraper assembly touches the surface of the worktable. Step 2: After controlling the two-axis moving mechanism to drive the scraper assembly to move back and forth once along the X-axis, control the two-axis moving mechanism to drive the scraper assembly to move a distance equal to the length of one scraper assembly along the Y-axis. Step 3: Repeat step 2 until the two-axis moving mechanism drives one end of the scraper assembly to the other end along the Y-axis. Step 4: The worktable moves downward through motor one and lead screw one, and the two-axis moving mechanism moves the cleaning mechanism to one side. At the same time, the linear module moves the scraper assembly downward until the positioning rod slides out of the positioning hole, and the gear two and gear one are engaged. Step 5: Start motor one, and control the scraper assembly to rotate 90° under the action of the shaft through the meshing and cooperation of gear two and gear one; Step 6: Control the linear module to move the scraper assembly upward until the positioning rod is inserted into the corresponding positioning hole; at the same time, the motor drives the worktable upward until the bottom of the scraper assembly touches the surface of the worktable. Step 7: After controlling the two-axis moving mechanism to drive the scraper assembly to move back and forth once along the Y-axis, control the two-axis moving mechanism to drive the scraper assembly to move a distance equal to the length of one scraper assembly along the X-axis. Step 8: Repeat step 7 until the two-axis moving mechanism drives the scraper assembly to move from one end to the other along the X-axis.

[0013] A method for operating a waste cleaning device, wherein, in the initial state, the two scrapers on the two cleaning mechanisms are symmetrically arranged; Specifically, the steps include the following: Step 11: Control the linear module to move the scraper assembly downwards until the bottom of the scraper assembly touches the surface of the worktable. Step 12: After controlling the two-axis moving mechanism to move the scraper assembly along the X-axis once, control the two-axis moving mechanism to move the scraper assembly along the Y-axis by a distance equal to the length of one scraper assembly. Step 13: Repeat step 12 until the two-axis moving mechanism drives one end of the scraper assembly to move to the other end along the Y-axis. Step 14: Drive the worktable downward by motor one and lead screw one, control the two-axis moving mechanism to move the cleaning mechanism to one side, and at the same time control the linear module on that side to move the scraper assembly downward until the positioning rod slides out from the positioning hole, and control gear two and gear one to mesh; start motor one, and control the scraper assembly to rotate 90° under the action of the shaft through the meshing and transmission of gear two and gear one. Step 15: Control the two-axis moving mechanism to move the cleaning mechanism to the other side, control the linear module on the other side to move the scraper assembly downward until the positioning rod slides out from the positioning hole, and control gear two and gear one to mesh; start motor one, and control the scraper assembly to rotate 90° under the action of the shaft through the meshing of gear two and gear one. Step 16: Control the linear module to move the scraper assembly upward until the positioning rod is inserted into the corresponding positioning hole; at the same time, the motor drives the worktable upward until the bottom of the scraper assembly touches the surface of the worktable. Step 17: After controlling the two-axis moving mechanism to move the scraper assembly along the Y-axis once, control the two-axis moving mechanism to move the scraper assembly along the X-axis by a distance equal to the length of one scraper assembly. Step 18: Repeat step 27 until the two-axis moving mechanism drives the scraper assembly to move from one end to the other along the X-axis. In the initial state, the two scrapers on the two cleaning mechanisms are tilted to one side; Specifically, the steps include the following: Step 21: Control the linear module to move the scraper assembly downwards until the bottom of the scraper assembly touches the surface of the worktable; Step 22: After controlling the two-axis moving mechanism to drive the scraper assembly to move back and forth once along the X-axis, control the two-axis moving mechanism to drive the scraper assembly to move a distance equal to the length of one scraper assembly along the Y-axis. Step 23: Repeat step 22 until the two-axis moving mechanism drives the scraper assembly to move from one end to the other along the Y-axis. Step 24: Drive the worktable downward by motor one and lead screw one, control the two-axis moving mechanism to move the cleaning mechanism to one side, and at the same time control the linear module on that side to move the scraper assembly downward until the positioning rod slides out from the positioning hole, and control gear two and gear one to mesh; start motor one, and control the scraper assembly to rotate 90° under the action of the shaft through the meshing of gear two and gear one. Step 25: Control the two-axis moving mechanism to drive the cleaning mechanism to the other side, control the linear module on the other side to drive the scraper assembly to move downward until the positioning rod slides out from the positioning hole, and control gear two and gear one to mesh; start motor one, and control the scraper assembly to rotate 90° under the action of the shaft through the meshing of gear two and gear one. Step 26: Control the linear module to move the scraper assembly upward until the positioning rod is inserted into the corresponding positioning hole; at the same time, the motor drives the worktable upward until the bottom of the scraper assembly touches the surface of the worktable. Step 27: After controlling the two-axis moving mechanism to drive the scraper assembly to move back and forth once along the Y-axis, control the two-axis moving mechanism to drive the scraper assembly to move a distance equal to the length of one scraper assembly along the X-axis. Step 28: Repeat step 27 until the two-axis moving mechanism drives the scraper assembly to move from one end to the other along the X-axis direction.

[0014] 1. This invention integrates a cleaning mechanism with a scraper assembly into a two-axis moving mechanism. The two-axis moving mechanism drives the cleaning mechanism to move, realizing automated and programmed cleaning of waste on the workbench surface. Compared with the traditional manual scraping that relies on human experience and feel, this method completely eliminates the risk of scratching the expensive workbench surface due to uneven force or improper angle, thus protecting the equipment. Moreover, the automated reciprocating scraping path planning is comprehensive, resulting in more thorough cleaning. 2. This invention cleverly reuses the power of motor one to drive the scraper assembly to rotate by setting a second gear at the end of the lifting screw of the worktable and setting a first gear and a positioning rod structure on the cleaning mechanism that can mesh with the second gear. By adjusting the orientation of the scraper assembly, the cleaning operation in both the X and Y axes can be completed by a single scraper assembly. Through bidirectional cross scraping, stubborn waste that may be left in one direction can be effectively removed. Attached Figure Description

[0015] Figure 1 This invention provides a schematic diagram of a 3D printer structure. Figure 1 ; Figure 2 This invention provides a schematic diagram of a 3D printer structure. Figure 2 ; Figure 3 Provided for the present invention Figure 2 Enlarged view of a portion of point A in the middle; Figure 4 A schematic diagram of the cleaning mechanism structure is provided for this invention; Figure 5 Provided for the present invention Figure 4 Side view Figure 6A schematic diagram of the second linear structure is provided for this invention. Explanation of reference numerals in the attached figures: 1-Base, 2-First linear structure, 3-Workbench, 4-Cleaning mechanism, 11-Column, 12-Connecting beam, 13-Mounting beam, 20-Second linear structure, 21-L-shaped base one, 22-L-shaped base two, 23-Motor two, 24-Coupling one, 25-Bearing seat one, 26-Lead screw two, 27-Guide column, 28-Sliding seat, 30-Motor one, 31-Guide sleeve two, 32-Lead nut seat one, 33-Lead screw one, 34-Guide rod one, 35-Coupling two, 36-Bearing seat two 37-Gear II, 39-Fixed Seat, 40-Base Plate, 400-Motor III, 401-Top Plate, 402-Mounting Part, 403-Positioning Hole, 41-Bearing Seat III, 42-Screw III, 43-Guide Rail, 431-Slide, 44-L-Type Mounting Seat, 441-Screw Nut III, 45-Shaft, 46-Moving Seat, 47-Scraper Assembly, 470-Scraper, 471-Clamping Seat I, 472-Clamping Seat II, 473-Slot, 474-Locking Bolt, 48-Positioning Rod, 49-Gear I. Detailed Implementation

[0016] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0017] This invention provides a 3D printer workbench waste cleaning device that achieves full-coverage cleaning of the workbench surface in three-dimensional space.

[0018] like Figures 1 to 2 As shown, the waste cleaning device provided by the present invention is installed inside a 3D printer with the following structure: the 3D printer includes a frame consisting of a base 1, a column 11, a connecting beam 12 and a mounting beam 13. A two-axis moving mechanism is installed on the top of the frame. A printing mechanism and a cleaning mechanism 4 are mounted on the two-axis moving mechanism. A worktable 3 is provided inside the frame directly below the two-axis moving mechanism. When the cleaning mechanism 4 is working, it cleans the upper surface of the worktable 3.

[0019] There are four columns 11, which are rectangular and fixed to the four corners of the base 1. There are four connecting beams 12 and four mounting beams 13, and both ends of each mounting beam 13 and connecting beam 12 are fixed to the column 11.

[0020] like Figure 2In the prior art, in order to facilitate the lifting and lowering of the worktable 3, a lifting mechanism is set below the worktable 3. The lifting mechanism includes a pair of motors 30 installed inside the base 1. The output end of the motors 30 is connected to a lead screw 33 through a coupling 35. The top of the lead screw 33 is installed inside a bearing seat 36. The bearing seat 36 is fixed on the mounting beam 13. The worktable 3 is provided with a nut seat 32 that cooperates with the lead screw 33. During operation, the motors 30 drive the lead screw 33 and drive the worktable 3 to move up and down along the guide rod 34 through the nut seat 32. The motors 30 are servo motors.

[0021] To ensure the stability of the worktable 3 during the lifting process, two fixed seats 39 are fixed on the mounting beam 13. A guide rod 34 is installed on the fixed seat 39. The bottom end of the guide rod 34 is fixed to the upper surface of the base 1. A guide sleeve 31 that cooperates with the guide rod 34 is installed on the edge side of the worktable 3. The cooperation between the guide rod 34 and the guide sleeve 31 maintains the guidance for the lifting of the worktable 3.

[0022] In the prior art, the two-axis moving mechanism consists of a first linear structure 2 and a second linear structure 20, and the second linear structure 20 and the first linear structure 2 have the same structure, such as... Figure 6 Each includes an L-shaped base 1 21 and an L-shaped base 22 arranged opposite to each other; a motor 23 is fixed on the L-shaped base 1 21, and the output end of the motor 23 is connected to a lead screw 26 through a coupling 24; a bearing seat 25 for mounting the lead screw 26 is fixed on the L-shaped base 22; a pair of guide posts 27 are also connected between the L-shaped base 1 21 and the L-shaped base 22; a sliding seat 28 is also included, with a mounting hole 1 and a mounting hole 282 on the sliding seat 28. A guide sleeve 281 that mates with the guide post 27 is installed in the mounting hole 1, and a lead screw nut seat 2 that mates with the lead screw 26 is installed in the mounting hole 282; the L-shaped base 1 21 and the L-shaped base 22 at both ends of the first linear structure 2 are respectively fixed on two mounting beams 13; the L-shaped base 1 21 and the L-shaped base 22 at both ends of the second linear structure 20 are respectively fixed on the two sliding seats 28 of the first linear structure 2.

[0023] When movement along the Y-axis is required, the motor 23 of the first linear structure 2 is controlled to rotate. The motor drives the lead screw 26 to rotate via the coupling 24; the rotational motion of the lead screw nut 2, which cooperates with the lead screw 26, is converted into linear motion, thereby driving the entire sliding seat 28 to move along the guide post 27 in the Y-axis direction. Since the base of the second linear structure 20 is fixed on this sliding seat, the entire second linear structure and its mounted cleaning mechanism 4 will move together along the Y-axis. When movement along the X-axis is required, the motor 23 of the second linear structure 20 rotates. Its working principle is exactly the same as described above; the motor drives the lead screw of the second linear structure, causing the sliding seat 28 of the second linear structure to move along its guide post 27 in the X-axis direction. The cleaning mechanism 4 is directly mounted on this sliding seat, thus achieving precise movement along the X-axis.

[0024] By coordinating the control of two motors on the first linear structure 2 and the second linear structure 20, the cleaning mechanism 4 can reach any specified coordinate point on the upper surface of the worktable 3, or complete a straight scraping path along the X-axis or Y-axis.

[0025] In order to avoid the presence of the cleaning mechanism 4 interfering with the printing action of the printing mechanism, the printing mechanism of the present invention is installed on the bottom side of the sliding seat 28 of the second linear structure 20, and the cleaning mechanism 4 is installed on the end side of the corresponding sliding seat 28.

[0026] like Figure 4-5 The cleaning mechanism 4 provided by the present invention includes a vertically arranged linear module. The linear module includes a base plate 40, the bottom end of which is bent to form a mounting part 402. A top plate 401 is fixed to the top of the base plate 40, and a motor 400 is mounted on the top plate 401. The output end of the motor 400 is connected to a lead screw 42 through a coupling. A pair of bearing seats 41 with a gap are installed on the inner wall of the base plate 40. The two ends of the lead screw 42 are respectively installed on the two bearing seats 41. Guide rails 43 are installed on the inner wall of the base plate 40 on both sides of the lead screw 42. A slide seat 431 that cooperates with the guide rail 43 is installed on the back of the L-shaped mounting seat 44. A nut seat 441 that cooperates with the lead screw 42 is installed on the back of the L-shaped mounting seat 44. The motor 400 drives the lead screw 42, causing the slider with the L-shaped mounting seat 44 to move up and down along the guide rail 43.

[0027] To remove waste material, an L-shaped mounting base 44 is equipped with a shaft 45 via a bearing. A movable seat 46 is mounted at the bottom of the shaft 45, and a scraper assembly 47 is mounted on the bottom side of the movable seat 46. When the scraper assembly 47 needs to be controlled to clean the upper surface of the worktable 3, the L-shaped mounting base 44 is moved vertically downward by starting the motor 400 until the bottom of the scraper assembly 47 is lower than the bottom of the printing mechanism, and the scraper assembly 47 of the printing mechanism is pressed against the upper surface of the worktable 3. At the same time, under the action of the two-axis moving mechanism, the scraper assembly 47 is moved along the X and Y axes, thereby scraping off the printing residue adhering to the upper surface of the worktable 3. This achieves thorough bidirectional cleaning of the upper surface of the worktable 3, effectively removing waste material that may be left by scraping in one direction. The entire process is fully automatic, eliminating the randomness and damage risk of manual operation, significantly improving the cleaning quality of the worktable 3, and ensuring the stability of continuous printing.

[0028] Since the cleaning process requires controlling the scraper assembly 47 to move along the X and Y axes to clean the printing residue adhering to the surface of the worktable 3 from two directions, thus improving the cleaning effect, the orientation of the scraper assembly 47 needs to be adjusted during use. Therefore, the shaft 45 provided in this invention has a gear 49 mounted on its top end, and a through hole for the shaft 45 to pass through is provided on the mounting part 402. Four positioning holes 403 are distributed around the through hole, and the upper surface of the movable seat 46 is fixed. Four positioning rods 48 penetrate the positioning holes 403; the end of the lead screw 33 is equipped with a gear 37 that rotates synchronously with the lead screw. When the two-axis moving mechanism drives the cleaning mechanism 4 to move to both sides of the frame, the gear 37 and the gear 49 mesh together. The transmission is achieved by using the meshing of the gear 37 and the gear 49. That is, by controlling the rotation of the lead screw 33, the shaft 45 is driven to rotate. The rotation of the shaft 45 can drive the scraper assembly 47 to rotate, thereby adjusting the orientation of the scraper assembly 47.

[0029] To facilitate the replacement of the scraper 470 in the scraper assembly 47, the scraper assembly 47 provided by the present invention includes a clamping seat 1 471 and a clamping seat 2 472 arranged opposite to each other. A groove 473 for fixing the scraper 470 is formed between the clamping seat 1 471 and the clamping seat 2 472. The threaded connection end of the clamping seat 1 471 and / or the clamping seat 2 472 abuts against the scraper 470. The clamping seat 1 471 and the clamping seat 2 472 are both fixed to the bottom side of the movable seat 46 by fixing bolts. The angle between the scraper 470 and the upper surface of the worktable 3 is 70°. The cross-sections of the clamping seat 1 471 and the clamping seat 2 472 are both L-shaped.

[0030] Similarly, in this invention, the tilt angle of the scraper 470 can be adjusted by replacing different models of clamp 471 and clamp 472.

[0031] For stubborn scrap, a more vertical angle (such as close to 80° or 85°) can be used to enhance the cutting force; for thinner or larger scrap, a more inclined angle (such as close to 60°, 65° or 70°) can be used to increase the scraping contact area, reduce local pressure, and protect the surface of the worktable 3.

[0032] When the orientation of the scraper assembly needs to be adjusted, the two-axis moving mechanism is controlled to move the cleaning mechanism 4 horizontally to the side of the frame, so that gear 49 and gear 37 are precisely engaged. At this time, by controlling motor 30 to drive lead screw 33 to rotate, power is transmitted to shaft 45 through the engaged gear 37 and gear 49, driving the movable seat 46 and scraper assembly 47 to rotate as a whole. After rotation to the correct position, the linear module is controlled to lift the scraper assembly, so that the positioning rod 48 is re-inserted into the next 90-degree positioning hole 403, completing the locking.

[0033] like Figure 1 It can be seen that, in one specific embodiment, a cleaning mechanism 4 is installed on one end face of the sliding seat 28. Based on this, the working method of the waste cleaning equipment includes the following steps: Step 1: Control the linear module to move the scraper assembly 47 downward until the bottom of the scraper assembly 47 touches the upper surface of the worktable 3. Step 2: After controlling the two-axis moving mechanism to drive the scraper assembly 47 to move back and forth once along the X-axis, control the two-axis moving mechanism to drive the scraper assembly 47 to move a distance equal to the length of the scraper assembly 47 along the Y-axis. Step 3: Repeat step 2 until the two-axis moving mechanism drives the scraper assembly 47 to move one end to the other along the Y-axis. Step 4: The worktable 3 moves downward by the motor 30 and the lead screw 33, and the two-axis moving mechanism moves the cleaning mechanism 4 to one side. At the same time, the linear module moves the scraper assembly 47 downward until the positioning rod 48 slides out from the positioning hole 403, and the gear 2 37 and gear 1 49 mesh. Step 5: Start motor 30, and control the scraper assembly 47 to rotate 90° under the action of shaft 45 through the meshing of gear 37 and gear 49. Step 6: Control the linear module to move the scraper assembly 47 upward until the positioning rod 48 is inserted into the corresponding positioning hole 403; at the same time, the motor 30 moves the worktable 3 upward until the bottom end of the scraper assembly 47 touches the upper surface of the worktable 3. Step 7: After controlling the two-axis moving mechanism to drive the scraper assembly 47 to move back and forth once along the Y-axis, control the two-axis moving mechanism to drive the scraper assembly 47 to move a distance equal to the length of the scraper assembly 47 along the X-axis. Step 8: Repeat step 7 until the two-axis moving mechanism drives the scraper assembly 47 to move from one end to the other along the X-axis direction. At this time, the scraper 470 covers the entire upper surface of the worktable 3.

[0034] In step 2, after the scraper assembly 47 is moved from the left to the right along the X-axis, the linear module is controlled to move the scraper assembly 47 upward, so that the bottom end of the scraper assembly 47 disengages from the upper surface of the worktable 3; after the scraper assembly 47 is moved from the right to the left along the X-axis, the linear module is controlled to move the scraper assembly 47 downward until the bottom end of the scraper assembly 47 touches the upper surface of the worktable 3.

[0035] like Figure 2 It can be seen that in the second specific embodiment, a cleaning mechanism 4 is installed on each of the two end faces of the sliding seat 28, and in the initial state, the two scrapers 470 on the two cleaning mechanisms 4 are symmetrically arranged.

[0036] The working method of waste cleaning equipment includes the following steps: Step 11: Control the linear module to move the scraper assembly 47 downward until the bottom of the scraper assembly 47 touches the upper surface of the worktable 3. Step 12: After controlling the two-axis moving mechanism to move the scraper assembly 47 along the X-axis once, control the two-axis moving mechanism to move the scraper assembly 47 along the Y-axis by a distance equal to the length of the scraper assembly 47. Step 13: Repeat step 12 until the two-axis moving mechanism drives the scraper assembly 47 to move one end to the other along the Y-axis. Step 14: The worktable 3 is driven downward by motor 30 and lead screw 33, and the two-axis moving mechanism is controlled to move the cleaning mechanism 4 to one side. At the same time, the linear module on that side is controlled to move the scraper assembly 47 downward until the positioning rod 48 slides out from the positioning hole 403, and the gear 2 37 and gear 1 49 are engaged. Motor 30 is started, and the scraper assembly 47 is rotated 90° under the action of shaft 45 through the meshing of gear 2 37 and gear 1 49. Step 15: Control the two-axis moving mechanism to drive the cleaning mechanism 4 to move to the other side, control the linear module on the other side to drive the scraper assembly 47 to move downward until the positioning rod 48 slides out from the positioning hole 403, and control the gear 2 37 and gear 1 49 to mesh; start the motor 1 30, and control the scraper assembly 47 to rotate 90° under the action of the shaft 45 through the meshing of gear 2 37 and gear 1 49. Step 16: Control the linear module to move the scraper assembly 47 upward until the positioning rod 48 is inserted into the corresponding positioning hole 403; at the same time, the motor 30 moves the worktable 3 upward until the bottom end of the scraper assembly 47 touches the upper surface of the worktable 3. Step 17: After controlling the two-axis moving mechanism to move the scraper assembly 47 along the Y-axis once, control the two-axis moving mechanism to move the scraper assembly 47 along the X-axis by a distance equal to the length of the scraper assembly 47. Step 18: Repeat step 27 until the two-axis moving mechanism drives the scraper assembly 47 to move from one end to the other along the X-axis direction. At this time, the scraper 470 covers the entire upper surface of the worktable 3.

[0037] It can be understood that in the third specific implementation, such as Figure 2 A cleaning mechanism 4 is installed on each of the two end faces of the sliding seat 28, and in the initial state, the two scrapers 470 on the two cleaning mechanisms 4 are tilted to one side; The working method of waste cleaning equipment includes the following steps: Step 21: Control the linear module to move the scraper assembly 47 downward until the bottom end of the scraper assembly 47 touches the upper surface of the worktable 3. Step 22: After controlling the two-axis moving mechanism to drive the scraper assembly 47 to move back and forth once along the X-axis, control the two-axis moving mechanism to drive the scraper assembly 47 to move a distance equal to the length of the scraper assembly 47 along the Y-axis. Step 23: Repeat step 22 until the two-axis moving mechanism drives the scraper assembly 47 to move from one end to the other along the Y-axis. Step 24: The worktable 3 is driven downward by motor 30 and lead screw 33, and the two-axis moving mechanism is controlled to move the cleaning mechanism 4 to one side. At the same time, the linear module on that side is controlled to move the scraper assembly 47 downward until the positioning rod 48 slides out from the positioning hole 403, and the gear 2 37 and gear 1 49 are engaged. Motor 30 is started, and the scraper assembly 47 is rotated 90° under the action of shaft 45 through the meshing of gear 2 37 and gear 1 49. Step 25: Control the two-axis moving mechanism to drive the cleaning mechanism 4 to move to the other side, control the linear module on the other side to drive the scraper assembly 47 to move downward until the positioning rod 48 slides out from the positioning hole 403, and control the gear 2 37 and gear 1 49 to mesh; start the motor 1 30, and control the scraper assembly 47 to rotate 90° under the action of the shaft 45 through the meshing of gear 2 37 and gear 1 49. Step 26: Control the linear module to move the scraper assembly 47 upward until the positioning rod 48 is inserted into the corresponding positioning hole 403; at the same time, the motor 30 drives the worktable 3 upward until the bottom end of the scraper assembly 47 abuts against the upper surface of the worktable 3. Step 27: After controlling the two-axis moving mechanism to drive the scraper assembly 47 to move back and forth once along the Y-axis, control the two-axis moving mechanism to drive the scraper assembly 47 to move a distance equal to the length of the scraper assembly 47 along the X-axis. Step 28: Repeat step 27 until the two-axis moving mechanism drives one end of the scraper assembly 47 to the other end along the X-axis direction, at which point the scraper 470 covers the entire upper surface of the worktable 3.

[0038] In step 22, after the scraper assembly 47 is moved from the left to the right along the X-axis, the linear module is controlled to move the scraper assembly 47 upward, so that the bottom end of the scraper assembly 47 disengages from the upper surface of the worktable 3; after the scraper assembly 47 is moved from the right to the left along the X-axis, the linear module is controlled to move the scraper assembly 47 downward until the bottom end of the scraper assembly 47 touches the upper surface of the worktable 3.

[0039] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A waste cleaning device for a 3D printer workbench, the 3D printer comprising a frame, a two-axis moving mechanism mounted on the frame, and a printing mechanism mounted on the two-axis moving mechanism; a workbench (3) is provided inside the frame directly below the two-axis moving mechanism, both sides of the workbench (3) are connected to a lifting mechanism, the lifting mechanism comprising a lead screw (33) driven by a motor (30), and at least one guide rod (34), and a lead screw nut (32) cooperating with the lead screw (33) is provided on the workbench (3); characterized in that, The two-axis moving mechanism is also equipped with at least one cleaning mechanism (4). The cleaning mechanism (4) includes a straight module. An L-shaped mounting base (44) is installed on the straight module. A shaft (45) is installed on the L-shaped mounting base (44) through a bearing. A gear (49) is installed at one end of the shaft (45), and a movable seat (46) is installed at the other end. A scraper assembly (47) is installed on the bottom side of the movable seat (46). A mounting part (402) is fixed on the straight module between the movable seat (46) and the L-shaped mounting base (44). A through hole for the shaft (45) to pass through is provided on the mounting part (402). Four positioning holes (403) are distributed around the through hole. At least one positioning rod (48) that passes through the positioning hole (403) is fixed on the upper surface of the movable seat (46). The end of the lead screw (33) is equipped with a gear (37) that rotates synchronously with the lead screw. When the two-axis moving mechanism drives the cleaning mechanism (4) to move to both sides of the frame, the gear (37) and the gear (49) mesh.

2. The 3D printer workbench waste cleaning device as described in claim 1, characterized in that, The frame includes a base (1), on which four rectangular columns (11) are fixed on the upper surface of the base (1), and a connecting beam (12) connects two adjacent columns (11); an installation beam (13) is also connected between the two columns (11) located between the connecting beam (12) and the base (1); the two-axis moving mechanism is installed between the two oppositely arranged installation beams (13).

3. The 3D printer workbench waste cleaning device as described in claim 2, characterized in that, The two-axis moving mechanism consists of a first linear structure (2) and a second linear structure (20). The second linear structure (20) and the first linear structure (2) have the same structure, both including an L-shaped base one (21) and an L-shaped base two (22) arranged opposite to each other. A motor (23) is fixed on the L-shaped base (21). The output end of the motor (23) is connected to a lead screw (26) via a coupling (24). A bearing seat (25) for mounting the lead screw (26) is fixed on the L-shaped base (22). A pair of guide posts (27) are also connected between the L-shaped base one (21) and the L-shaped base two (22); It also includes a sliding seat (28), on which a first mounting hole and a second mounting hole (282) are provided. A first guide sleeve (281) that cooperates with the guide post (27) is installed in the first mounting hole, and a second screw nut seat that cooperates with the second screw (26) is installed in the second mounting hole (282). The L-shaped base one (21) and L-shaped base two (22) at both ends of the first straight structure (2) are fixed on two mounting beams (13); the L-shaped base one (21) and L-shaped base two (22) at both ends of the second straight structure (20) are fixed on two sliding seats (28) of the first straight structure (2).

4. The 3D printer workbench waste cleaning device as described in claim 3, characterized in that, The bottom end of the lead screw (33) is connected to the output end of the motor (30) via the coupling (35), and the mounting beam (13) is fixed with a bearing seat (36) for mounting the lead screw (26). The mounting beam (13) is fixed with a fixing seat (39) for mounting guide rod one (34). The bottom end of guide rod one (34) is fixed on the upper surface of the base (1). The edge of the workbench (3) is equipped with guide sleeve two (31) that cooperates with guide rod one (34).

5. A 3D printer workbench waste cleaning device as described in claim 4, characterized in that, The linear module includes a base plate (40), the mounting part (402) is integrally bent and formed at the bottom end of the base plate (40), the top plate (401) is fixed at the top of the base plate (40), the motor three (400) is mounted on the top plate (401), and the output end of the motor three (400) is connected to the lead screw three (42) through the coupling three. The inner wall of the base plate (40) is equipped with a pair of bearing seats (41) with a gap, and the two ends of the lead screw (42) are respectively installed on the two bearing seats (41); Guide rails (43) are installed on the inner wall of the base plate (40) on both sides of the lead screw (42). A slide (431) that cooperates with the guide rail (43) is installed on the back of the L-shaped mounting seat (44). A screw nut seat (441) that cooperates with the lead screw (42) is installed on the back of the L-shaped mounting seat (44).

6. The 3D printer workbench waste cleaning device as described in claim 4, characterized in that, The scraper assembly (47) includes a clamping seat one (471) and a clamping seat two (472) arranged opposite to each other. A groove (473) for fixing the scraper (470) is formed between the clamping seat one (471) and the clamping seat two (472). The threaded end of the clamping seat one (471) and / or the clamping seat two (472) abuts against the scraper (470) and the clamping seat one (471) and the clamping seat two (472) are both fixed to the bottom side of the movable seat (46) by fixing bolts.

7. A 3D printer workbench waste cleaning device as described in claim 6, characterized in that, The angle between the scraper (470) and the upper surface of the worktable (3) is 60°-85°, and the cross-sections of the clamping seat one (471) and clamping seat two (472) are both L-shaped.

8. A 3D printer workbench waste cleaning device as described in claim 7, characterized in that, A cleaning mechanism (4) is installed at each end of the sliding seat (28).

9. The working method of the waste cleaning equipment as described in claim 8, characterized in that, Includes the following steps: Step 1: Control the linear module to move the scraper assembly (47) downward until the bottom of the scraper assembly (47) touches the upper surface of the worktable (3); Step 2: After controlling the two-axis moving mechanism to drive the scraper assembly (47) to move back and forth once along the X-axis, control the two-axis moving mechanism to drive the scraper assembly (47) to move a distance equal to the length of the scraper assembly (47) along the Y-axis. Step 3: Repeat step 2 until the two-axis moving mechanism drives the scraper assembly (47) to move from one end to the other along the Y-axis. Step 4: Drive the worktable (3) downward by motor one (30) and lead screw one (33), control the two-axis moving mechanism to drive the cleaning mechanism (4) to move to one side, and at the same time, the linear module moves the scraper assembly (47) downward until the positioning rod (48) slides out from the positioning hole (403), and control gear two (37) and gear one (49) to mesh; Step 5: Start motor one (30), and control the scraper assembly (47) to rotate 90° under the action of shaft (45) through the meshing and cooperation of gear two (37) and gear one (49); Step 6: Control the linear module to move the scraper assembly (47) upward until the positioning rod (48) is inserted into the corresponding positioning hole (403); at the same time, the motor (30) moves the worktable (3) upward until the bottom of the scraper assembly (47) touches the upper surface of the worktable (3); Step 7: After controlling the two-axis moving mechanism to drive the scraper assembly (47) to move back and forth once along the Y-axis, control the two-axis moving mechanism to drive the scraper assembly (47) to move a distance equal to the length of one scraper assembly (47) along the X-axis. Step 8: Repeat step 7 until the two-axis moving mechanism drives the scraper assembly (47) to move from one end to the other along the X-axis direction.

10. The working method of the waste cleaning equipment as described in claim 6 or 7, characterized in that, When the two scrapers (470) on the two cleaning mechanisms (4) are symmetrically arranged in the initial state; Specifically, the steps include the following: Step 11: Control the linear module to move the scraper assembly (47) downward until the bottom of the scraper assembly (47) touches the upper surface of the worktable (3); Step 12: After controlling the two-axis moving mechanism to drive the scraper assembly (47) to move once along the X-axis direction, control the two-axis moving mechanism to drive the scraper assembly (47) to move a distance equal to the length of one scraper assembly (47) along the Y-axis direction; Step 13: Repeat step 12 until the two-axis moving mechanism drives the scraper assembly (47) to move from one end to the other along the Y-axis. Step 14: Drive the worktable (3) downward by motor one (30) and lead screw one (33), control the two-axis moving mechanism to drive the cleaning mechanism (4) to one side, and control the linear module on that side to drive the scraper assembly (47) downward until the positioning rod (48) slides out from the positioning hole (403), and control gear two (37) and gear one (49) to mesh; start motor one (30), and control the scraper assembly (47) to rotate 90° under the action of shaft (45) through the meshing of gear two (37) and gear one (49); Step 15: Control the two-axis moving mechanism to drive the cleaning mechanism (4) to move to the other side, control the linear module on the other side to drive the scraper assembly (47) to move downward until the positioning rod (48) slides out from the positioning hole (403), and control the gear two (37) and gear one (49) to mesh; start motor one (30), and control the scraper assembly (47) to rotate 90° under the action of shaft (45) through the meshing of gear two (37) and gear one (49); Step 16: Control the linear module to move the scraper assembly (47) upward until the positioning rod (48) is inserted into the corresponding positioning hole (403); at the same time, the motor (30) drives the worktable (3) upward until the bottom end of the scraper assembly (47) touches the upper surface of the worktable (3); Step 17: After controlling the two-axis moving mechanism to drive the scraper assembly (47) to move once along the Y-axis direction, control the two-axis moving mechanism to drive the scraper assembly (47) to move a distance equal to the length of one scraper assembly (47) along the X-axis direction; Step 18: Repeat step 27 until the two-axis moving mechanism drives the scraper assembly (47) to move from one end to the other along the X-axis direction. When in the initial state, the two scrapers (470) on the two cleaning mechanisms (4) are tilted to one side; Specifically, the steps include the following: Step 21: Control the linear module to move the scraper assembly (47) downward until the bottom of the scraper assembly (47) touches the upper surface of the worktable (3); Step 22: After controlling the two-axis moving mechanism to drive the scraper assembly (47) to move back and forth once along the X-axis, control the two-axis moving mechanism to drive the scraper assembly (47) to move a distance equal to the length of the scraper assembly (47) along the Y-axis. Step 23: Repeat step 22 until the two-axis moving mechanism drives the scraper assembly (47) to move from one end to the other along the Y-axis. Step 24: Drive the worktable (3) downward by motor one (30) and lead screw one (33), control the two-axis moving mechanism to drive the cleaning mechanism (4) to one side, and control the linear module on that side to drive the scraper assembly (47) downward until the positioning rod (48) slides out from the positioning hole (403), and control gear two (37) and gear one (49) to mesh; start motor one (30), and control the scraper assembly (47) to rotate 90° under the action of shaft (45) through the meshing of gear two (37) and gear one (49); Step 25: Control the two-axis moving mechanism to drive the cleaning mechanism (4) to move to the other side, control the linear module on the other side to drive the scraper assembly (47) to move downward until the positioning rod (48) slides out from the positioning hole (403), and control the gear two (37) and gear one (49) to mesh; start motor one (30), and control the scraper assembly (47) to rotate 90° under the action of shaft (45) through the meshing of gear two (37) and gear one (49); Step 26: Control the linear module to move the scraper assembly (47) upward until the positioning rod (48) is inserted into the corresponding positioning hole (403); at the same time, the motor (30) drives the worktable (3) upward until the bottom end of the scraper assembly (47) touches the upper surface of the worktable (3); Step 27: After controlling the two-axis moving mechanism to drive the scraper assembly (47) to move back and forth once along the Y-axis, control the two-axis moving mechanism to drive the scraper assembly (47) to move a distance equal to the length of one scraper assembly (47) along the X-axis. Step 28: Repeat step 27 until the two-axis moving mechanism drives the scraper assembly (47) to move from one end to the other along the X-axis.

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