Shovel piece mechanism and 3D printer

Abstract

The utility model provides a shoveling piece mechanism and a 3D printer, the shoveling piece mechanism is applied to the 3D printer, the 3D printer comprises a forming platform, the forming platform is provided with a forming surface used for attaching a printing piece, and the shoveling piece mechanism comprises a mounting frame arranged on the 3D printer; the scraper knife is used for separating the printed piece from the forming surface; the shovel piece driving assembly is used for driving at least one of the shovel blade and the forming platform, so that the shovel blade and the forming platform move relatively, and the printed piece is separated from the forming surface through the shovel blade; and the liquid receiving piece is arranged on the mounting frame, the liquid receiving piece is provided with a liquid receiving opening, and the liquid receiving opening corresponds to at least one position of the scraper knife so that the liquid receiving piece can receive the printing material adhering to the scraper knife. According to the technical scheme, the problem that in the prior art, liquid printing materials attached to a scraper knife are prone to dripping onto equipment, and pollution is caused to the equipment is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, and in particular to a shovel mechanism and a 3D printer. Background Art

[0002] After the 3D printer completes printing, that is, after the printing material is solidified on the molding platform to form a print, the solid three-dimensional print is maintained on the molding platform, and the uncured printing material is attached to the cured print.

[0003] In the related art, a manual shoveling method is used to separate the printed part from the molding platform. In this way, after the printed part is printed, the 3D printer needs to be paused to wait for the operator to use a shoveling tool to separate the printed part from the molding platform, and the shoveling efficiency is low. In addition, since the manual shoveling method depends on the operator's operating level, the shoveling consistency of the printed part is poor, and the stability of the finished product is poor. In the automatic shoveling equipment, a shovel is usually used to shovel the printed part off to achieve the separation of the printed part.

[0004] However, during the scraping process, uncured liquid printing material will adhere to the scraper, and the printing material will easily drip onto the equipment, causing pollution to the equipment. Utility Model Content

[0005] The main purpose of the utility model is to provide a shovel mechanism and a 3D printer to solve the problem in the related art that liquid printing material attached to the shovel blade is easy to drip onto the equipment and cause pollution to the equipment.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a shovel mechanism is provided, which is applied to a 3D printer. The 3D printer includes a molding platform, and the molding platform has a molding surface for attaching a printed part. The shovel mechanism includes: a mounting frame, which is arranged on the 3D printer; a scraper, which is used to separate the printed part from the molding surface; a shovel drive assembly, which is used to drive at least one of the scraper and the molding platform so that the scraper and the molding platform move relative to each other, so as to separate the printed part from the molding surface by the scraper; a liquid receiving part, which is arranged on the mounting frame, and the liquid receiving part has a liquid receiving port, and the liquid receiving port corresponds to at least one position of the scraper, so that the liquid receiving part receives the printing material adhered to the scraper.

[0007] Furthermore, the mounting frame includes: a first bracket, which is arranged on the 3D printer; a movable bracket, which is movably arranged on the first bracket; a scraper, which is connected to the movable bracket and can move with the movable bracket; a scraper driving assembly, which is arranged on the first bracket, and the scraper driving assembly drives the movable bracket to drive the scraper to move relative to the molding surface to separate the printed part from the molding surface.

[0008] Furthermore, the mounting bracket also includes a fixed bracket arranged on the first bracket, and the liquid contacting piece is connected to the fixed bracket.

[0009] Furthermore, there are two fixed brackets spaced apart on both sides of the liquid contact part, one fixed bracket is provided with a connecting protrusion facing the other fixed bracket, one end of the liquid contact part is provided with a connecting flange, and the connecting flange overlaps the connecting protrusion to connect the liquid contact part to the fixed bracket.

[0010] Furthermore, a positioning structure is arranged between the connecting protrusion and the connecting flange, and the positioning structure includes a positioning protrusion and a positioning hole which cooperates with the positioning protrusion for positioning, one of the positioning protrusion and the positioning hole is arranged on the connecting protrusion, and the other of the positioning protrusion and the positioning hole is arranged on the connecting flange.

[0011] Furthermore, one end of the connecting flange is provided with a limiting flange folded downward, and the limiting flange cooperates with the connecting protrusion in a limiting manner.

[0012] Furthermore, a magnetic attraction piece is provided on one side of the limiting flange facing the connecting protrusion, and the connecting protrusion can be magnetically matched with the magnetic attraction piece.

[0013] Furthermore, the shoveling mechanism also includes a receiving box and a receiving drive assembly. The receiving box is movably arranged on the first bracket. The receiving box has a material receiving position located below the forming surface and a material discharging position located on one side of the forming surface. The receiving drive assembly drives the receiving box to move between the material receiving position and the material discharging position.

[0014] Furthermore, the mounting frame also includes a second bracket, and the shovel mechanism also includes a liquid receiving guide plate arranged on the second bracket. When the receiving box is in the discharge position, the box opening of the receiving box is located above the liquid receiving guide plate.

[0015] Furthermore, the mounting frame also includes a second bracket, the second bracket includes a platform base plate located below the forming surface, the first bracket includes a top plate and a support beam supporting the top plate, the support beam is connected to the platform base plate, the top plate is arranged parallel to the forming surface, and the movable bracket is arranged below the top plate.

[0016] Furthermore, the shovel drive assembly is connected under the platform base plate, and the shovel drive assembly includes a driving motor, a transmission shaft spaced apart from the motor shaft of the driving motor, a first transmission belt drivingly connecting the motor shaft and the transmission shaft, a first pulley arranged at one end of the transmission shaft, a second pulley arranged on the top plate, and a second transmission belt sleeved on the first pulley and the second pulley; the driving motor drives the transmission shaft to rotate through the first transmission belt, so as to drive the shovel blade on the movable bracket to move through the second transmission belt.

[0017] Furthermore, the shovel mechanism also includes a first position detection member arranged on the liquid contact member, a second position detection member arranged on the side of the molding surface away from the liquid contact member, and a controller connected to the first position detection member and the second position detection member by signal, and the controller is control-connected to the shovel drive assembly.

[0018] Furthermore, the scraper includes two ends arranged along the length direction, and the blade of the scraper is arranged between the two ends; the scraper mechanism also includes a liquid blocking member, which is arranged on the scraper and is used to block the printing material on the scraper from flowing toward the two ends.

[0019] Furthermore, the shoveling mechanism also includes a detection module, which is used to detect the number of shoveling times of the shovel blade.

[0020] According to another aspect of the utility model, a 3D printer is provided, comprising a shovel mechanism, and the shovel mechanism is the shovel mechanism described above.

[0021] The technical solution of the utility model is applied to a 3D printer, and the 3D printer includes a molding platform, and the molding platform has a molding surface for attaching a printed part. The shovel mechanism includes: a mounting frame, a scraper, a scraper drive assembly, and a liquid receiving member. The mounting frame is arranged on the 3D printer. The scraper is used to separate the printed part from the molding surface. The scraper drive assembly is used to drive at least one of the scraper and the molding platform so that the scraper and the molding platform move relative to each other, so as to separate the printed part from the molding surface by the scraper. The liquid receiving member is arranged on the mounting frame, and the liquid receiving member has a liquid receiving port, and the liquid receiving port corresponds to at least one position of the scraper, so that the liquid receiving member receives the printed material adhered to the scraper. Under the action of gravity, the uncured liquid printed material drips downward, and the arrangement of the liquid receiving member can catch the uncured liquid printed material on the printed part attached to the scraper when the scraper is shoveled, thereby reducing the possibility of the uncured liquid printed material attached to the scraper dripping onto the equipment and causing pollution to the equipment. Therefore, the technical solution of the present application effectively solves the problem that the liquid printing material attached to the scraper is easy to drip onto the equipment and cause pollution to the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0023] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of a 3D printer according to the utility model is shown;

[0024] Figure 2 Shows Figure 1 A schematic diagram of the three-dimensional structure of the shovel mechanism of the 3D printer;

[0025] Figure 3 Shows Figure 2 A bottom view schematic diagram of a shovel mechanism of a 3D printer;

[0026] Figure 4 Shows Figure 1 A schematic diagram of the three-dimensional structure of a fixed bracket of a shovel mechanism of a 3D printer;

[0027] Figure 5 Shows Figure 1 A schematic diagram of the three-dimensional structure of a 3D printer when the scraper is in a separated state and the scraper is in an initial state;

[0028] Figure 6 Shows Figure 1 A schematic diagram of the three-dimensional structure of the shovel mechanism of the 3D printer from another perspective.

[0029] The above drawings include the following reference numerals:

[0030] 11. second bracket; 111. platform substrate; 12. molding platform;

[0031] 20. First bracket; 21. Top plate; 22. Support beam;

[0032] 31. Movable bracket; 32. Shovel;

[0033] 41. driving motor; 42. transmission shaft; 43. first transmission belt; 44. first pulley; 45. second pulley; 46. second transmission belt;

[0034] 50. Liquid contact parts; 51. Connecting flange; 52. Limit flange;

[0035] 60. fixing bracket; 61. connecting protrusion;

[0036] 71. Positioning protrusion; 72. Positioning hole;

[0037] 80. Access box;

[0038] 90. Liquid receiving guide plate;

[0039] 100. Material tray. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0041] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0042] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0043] like Figures 1 to 6 As shown, the shovel mechanism of this embodiment is applied to a 3D printer, and the 3D printer includes a molding platform 12, and the molding platform 12 has a molding surface for attaching a printed part. The shovel mechanism includes: a mounting frame, which is arranged on the 3D printer; a scraper 32, which is used to separate the printed part from the molding surface; a shovel drive assembly, which is used to drive at least one of the scraper and the molding platform, so that the scraper and the molding platform move relative to each other, so as to separate the printed part from the molding surface by the scraper; a liquid receiving member 50, which is arranged on the mounting frame, and the liquid receiving member has a liquid receiving port, and the liquid receiving port corresponds to at least one position of the scraper, so that the liquid receiving member receives the printing material adhered to the scraper.

[0044] In this way, under the action of gravity, the uncured liquid printing material drips downward, and the liquid receiving member 50 is set to catch the uncured liquid printing material attached to the printed part when the scraper 32 scrapes, reducing the possibility of the uncured liquid printing material attached to the scraper 32 dripping onto the device and causing pollution to the device. Therefore, the technical solution of the present application effectively solves the problem in the related art that the liquid printing material attached to the scraper is easy to drip onto the device and cause pollution to the device.

[0045] In this embodiment, the liquid receiving member 50 is disposed below the initial position of the scraper 32, so that the liquid receiving member 50 can receive the uncured liquid printing material on the scraper 32 when the scraper 32 is stationary. When the scraper 32 is in the initial position, it is stationary on one side of the molding surface to avoid printing of the printed part.

[0046] like Figures 1 to 6 As shown, the mounting frame includes: a first bracket 20, a movable bracket 31, a scraper 32 and a scraper drive assembly. The first bracket 20 is arranged on the 3D printer. The movable bracket 31 is movably arranged on the first bracket 20. The scraper 32 is connected to the movable bracket 31 and can move with the movable bracket 31. The scraper drive assembly is arranged on the first bracket 20, and the scraper drive assembly drives the movable bracket 31 to drive the scraper 32 to move relative to the molding surface to separate the printed part from the molding surface. In this way, the arrangement of the first bracket 20 facilitates the installation and processing of the movable bracket 31, the scraper 32 and the scraper drive assembly.

[0047] Since the scraper 32 is suspended on the first bracket 20 by the movable bracket 31, the space below the scraper 32 is avoided when the scraper 32 moves, which facilitates the 3D printer to set up a docking structure with other external equipment in the space below the scraper 32 when the scraper 32 moves, such as the docking structure between the 3D printer and subsequent draining, cleaning and curing equipment. By driving the scraper 32 to move relative to the molding surface through the movable bracket 31, the printed part can be separated from the molding surface, thereby improving the scraping efficiency. In addition, since the moving trajectory of the scraper 32 remains unchanged, the moving trajectory of the scraper 32 relative to the molding surface remains unchanged, thereby improving the consistency of the printed part separated from the molding surface and improving the stability of the finished product.

[0048] In other embodiments, the shovel drive assembly drives the forming platform to move, and the scraper 32 is stationary, so that the forming platform and the scraper 32 move relative to each other to separate the printed part from the forming surface.

[0049] like Figures 1 to 6As shown, the mounting frame further includes a fixed bracket 60 disposed on the first bracket 20, and the liquid contact part 50 is connected to the fixed bracket 60. The setting of the fixed bracket 60 facilitates the fixation of the liquid contact part 50. In addition, since the fixed bracket 60 is hoisted on the first bracket 20, the space below the liquid contact part 50 is avoided from being occupied, and it is convenient for the space below the 3D printer to be arranged to connect with other external devices when the scraper 32 moves.

[0050] In this embodiment, the scraper 32 includes two ends arranged along the length direction, and the blade of the scraper 32 is arranged between the two ends; the scraper mechanism also includes a liquid blocking member, which is arranged on the scraper 32 and is used to block the printing material on the scraper 32 from flowing toward the two ends. The liquid blocking member can block the uncured printing material from flowing to the two ends of the scraper 32, so as to reduce the possibility of the uncured printing material dripping along the two ends of the scraper 32.

[0051] like Figures 1 to 6 As shown, two fixing brackets 60 are arranged at intervals on both sides of the liquid contact part 50, and a connecting protrusion 61 facing the other fixing bracket 60 is provided on one fixing bracket 60. A connecting flange 51 is provided on one end of the liquid contact part 50, and the connecting flange 51 overlaps the connecting protrusion 61 to connect the liquid contact part 50 with the fixing bracket 60. The structure of the connecting protrusion 61 and the connecting flange 51 is simple and easy to process. In addition, the overlapping cooperation between the connecting protrusion 61 and the connecting flange 51 facilitates the replacement and installation of the liquid contact part 50.

[0052] In this embodiment, the liquid contact part 50 is detachably connected to the fixing bracket 60 , so as to facilitate cleaning of the uncured printing material received in the liquid contact part 50 .

[0053] like Figures 1 to 6 As shown, a positioning structure is provided between the connecting protrusion 61 and the connecting flange 51, and the positioning structure includes a positioning protrusion 71 and a positioning hole 72 that is positioned and matched with the positioning protrusion 71. The positioning protrusion 71 is provided on the connecting protrusion 61, and the positioning hole 72 is provided on the connecting flange 51. The provision of the positioning structure facilitates the positioning of the connecting flange 51 when it overlaps the connecting protrusion 61, so that the installation of the liquid contact part 50 on the fixed bracket 60 is more stable and reliable. In addition, the structure of the positioning protrusion 71 and the positioning hole 72 is simple and easy to process.

[0054] In other embodiments, the positioning hole 72 is disposed on the connecting protrusion 61 , and the positioning protrusion 71 is disposed on the connecting flange 51 .

[0055] like Figures 1 to 6As shown, one end of the connecting flange 51 is provided with a downwardly folded limiting flange 52, and the limiting flange 52 is limitedly matched with the connecting protrusion 61. The setting of the limiting flange 52 can limit the movement of the connecting flange 51 relative to the connecting protrusion 61, so that the installation of the liquid contact part 50 on the fixing bracket 60 is more stable and reliable. The limiting flange 52 has a simple structure and is easy to process.

[0056] In this embodiment, the limiting flange 52 is located on the side of the connecting protrusion 61 away from the forming surface.

[0057] like Figures 1 to 6 As shown, a magnetic member is provided on the side of the limiting flange 52 facing the connecting protrusion 61, and the connecting protrusion 61 can cooperate with the magnetic member by magnetic attraction. The provision of the magnetic member facilitates the fixation of the liquid contact part 50 on the fixing bracket 60, making the installation of the liquid contact part 50 more convenient and the fixation more reliable. In this embodiment, the liquid contact part is provided on the upper side of the mounting frame by magnetic attraction and buckle, which can realize the pull-out type taking and placing, and is convenient for cleaning the accumulated liquid.

[0058] like Figures 1 to 6 As shown, the shoveling mechanism further includes a receiving box 80 and a receiving drive assembly. The receiving box 80 is movably arranged on the first bracket 20. The receiving box 80 has a receiving position located below the molding surface and a discharging position located on one side of the molding surface. The receiving drive assembly drives the receiving box 80 to move between the receiving position and the discharging position. The setting of the receiving box 80 can receive the printed piece shoveled off by the scraper 32 and move the printed piece to the discharging position, further improving the shoveling efficiency.

[0059] like Figures 1 to 6 As shown, the mounting frame further includes a second bracket 11, and the shovel mechanism further includes a liquid receiving guide plate 90 disposed on the second bracket 11. When the receiving box 80 is in the material discharging position, the box opening of the receiving box 80 is located above the liquid receiving guide plate 90. The provision of the liquid receiving guide plate 90 can guide the uncured printing material on the printed piece flowing out of the box opening of the receiving box 80, further reducing the possibility of the uncured printing material dripping onto the device or outside the device, causing pollution to the device or the environment.

[0060] It should be noted that the first bracket 20 and the second bracket 11 may be an integrally formed structure, or the first bracket 20 and the second bracket 11 may be two independent components.

[0061] In this embodiment, the mounting frame further includes a second bracket 11, and the liquid receiving guide plate 90 can guide the uncured printing material to the recycling container, so that the uncured printing material can be recycled, and the recycled uncured printing material can be filtered and reused, or mixed with new printing material in proportion for use. The printing material is resin.

[0062] In this embodiment, when the receiving box 80 is at the material discharging position, a receiving piece is provided below the box opening of the receiving box 80, and the printed pieces in the receiving box 80 can fall into the receiving piece for material collection. A full material sensor is provided at the box opening of the receiving piece to detect whether the receiving piece is full.

[0063] In this embodiment, a paddle is provided in the receiving box 80 and can move in a direction close to the box opening of the receiving box 80 or away from the box opening of the receiving box 80. The paddle moves to push the printed parts in the receiving box 80 out of the box opening so that the printed parts can fall into the receiving part.

[0064] like Figures 1 to 6 As shown, the second bracket 11 includes a platform substrate 111 located below the molding surface. The first bracket 20 includes a top plate 21 and a support beam 22 supporting the top plate 21, and the support beam 22 is connected to the platform substrate 111. The top plate 21 is arranged parallel to the molding surface, and the movable bracket 31 is arranged below the top plate 21. In this way, the top plate 21 connected to the movable bracket 31 is arranged parallel to the molding surface, so that the moving plane of the scraper 32 is parallel to the molding surface, which better ensures the parallelism of the scraper and the molding platform, and facilitates the control of the gap between the scraper 32 and the molding platform 12, so as to reduce the residue of the printed part on the molding plane after the scraper. In addition, such a setting can improve the consistency of the separated printed parts and further improve the stability of the finished product.

[0065] In this embodiment, a tray 100 for holding printing materials is disposed on the platform substrate 111, and the molding surface is located above the tray 100. The printed part is molded on the lower surface of the molding surface. In the vertical projection, the projection of the molding surface is located within the projection of the tray 100.

[0066] like Figures 1 to 6 As shown, the shovel drive assembly is connected to the bottom of the platform base plate 111, and the shovel drive assembly includes a drive motor 41, a transmission shaft 42 spaced apart from the motor shaft of the drive motor 41, a first transmission belt 43 drivingly connecting the motor shaft and the transmission shaft 42, a first pulley 44 disposed at one end of the transmission shaft 42, a second pulley 45 disposed on the top plate 21, and a second transmission belt 46 sleeved on the first pulley 44 and the second pulley 45. The drive motor 41 drives the transmission shaft 42 to rotate through the first transmission belt 43, so as to drive the shovel blade 32 on the movable bracket 31 to move through the second transmission belt 46. This makes the structure of the shovel drive assembly compact, reduces the space occupied by the shovel drive assembly, and facilitates processing, so that the movement of the shovel blade 32 is more stable and reliable.

[0067] In this embodiment, the shovel drive assembly further includes a reducer disposed between the drive motor 41 and the transmission shaft 42. The second transmission belt 46 is connected to the movable bracket 31 by screws. A slide rail is disposed on the top plate 21, and one end of the movable bracket 31 is slidably disposed in the slide rail.

[0068] In this embodiment, there are two first pulleys 44 and second pulleys 45, two second transmission belts 46, and one transmission shaft 42, and the transmission shaft 42 drives the two first pulleys 44 to rotate synchronously. One second transmission belt 46 is sleeved on one first pulley 44 and one second pulley 45.

[0069] like Figures 1 to 6 As shown, the shovel mechanism further includes a first position detection member disposed on the liquid contact member 50, a second position detection member disposed on the side of the molding surface away from the liquid contact member 50, and a controller connected to the first position detection member and the second position detection member by signal, and the controller is connected to the shovel drive assembly by control. In this way, by disposing the first position detection member, the second position detection member and the controller, the scraper 32 can be restricted between the liquid contact member 50 and the side of the molding surface away from the liquid contact member 50, and the moving range of the scraper 32 is restricted, so as to improve the accuracy of the scraper 32 when moving, and further improve the shovel efficiency.

[0070] In this embodiment, the shoveling mechanism further includes a detection module, which is used to detect the number of shoveling times of the shovel blade 32. For example, an NFC detection module is provided on the shovel blade to record the number of shoveling times.

[0071] In this embodiment, when the printed piece is printed, the receiving box 80 is located at the material discharge position on one side of the molding surface, and the scraper 32 is in the initial state above the liquid receiving port of the liquid receiving member 50, so as to avoid the printing operation of the printed piece. After the printing of the printed piece is completed, the receiving box 80 moves to the material receiving position, and the scraper 32 is in a separated state relative to the molding surface, so that the printed piece can be separated from the molding surface by the scraper 32 and fall into the receiving box 80.

[0072] The present application also provides a 3D printer, which includes a shovel mechanism, which is the above-mentioned shovel mechanism. Since the above-mentioned shovel mechanism can solve the problem in the related art that the liquid printing material attached to the shovel blade is easy to drip onto the device and cause pollution to the device, the 3D printer with the shovel mechanism can solve the same technical problem.

[0073] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0074] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0075] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0076] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A shovel mechanism, applied to a 3D printer, the 3D printer comprising a molding platform, the molding platform having a molding surface for attaching a printed part, characterized in that: The shovel mechanism comprises: A mounting frame, arranged on the 3D printer; A scraper (32) for separating the printed part from the molding surface; A shovel drive assembly, used to drive at least one of the scraper and the molding platform, so that the scraper and the molding platform move relative to each other, so as to separate the printed part from the molding surface by the scraper; A liquid receiving part (50) is arranged on the mounting frame, and has a liquid receiving port, wherein the liquid receiving port corresponds to at least one position of the scraper, so that the liquid receiving part receives the printing material adhered to the scraper.

2. The shovel mechanism according to claim 1, characterized in that: The mounting frame comprises: A first bracket (20) is arranged on the 3D printer; A movable bracket (31) movably arranged on the first bracket (20); A scraper (32) connected to the movable bracket (31) and capable of moving with the movable bracket (31); A shovel drive assembly is arranged on the first bracket (20), and the shovel drive assembly drives the movable bracket (31) to drive the scraper (32) to move relative to the molding surface to separate the printed part from the molding surface.

3. The shovel mechanism according to claim 2, characterized in that: The mounting frame further comprises a fixed bracket (60) arranged on the first bracket (20), and the liquid contacting part (50) is connected to the fixed bracket (60).

4. The shovel mechanism according to claim 3, characterized in that: The two fixing brackets (60) are arranged at intervals on both sides of the liquid contact part (50), one of the fixing brackets (60) is provided with a connecting protrusion (61) facing the other fixing bracket (60), and one end of the liquid contact part (50) is provided with a connecting flange (51), and the connecting flange (51) overlaps the connecting protrusion (61) to connect the liquid contact part (50) to the fixing bracket (60).

5. The shovel mechanism according to claim 4, characterized in that: A positioning structure is provided between the connecting protrusion (61) and the connecting flange (51), and the positioning structure comprises a positioning protrusion (71) and a positioning hole (72) positioned and matched with the positioning protrusion (71); one of the positioning protrusion (71) and the positioning hole (72) is provided on the connecting protrusion (61), and the other of the positioning protrusion (71) and the positioning hole (72) is provided on the connecting flange (51).

6. The shovel mechanism according to claim 4, characterized in that: One end of the connecting flange (51) is provided with a limiting flange (52) folded downward, and the limiting flange (52) is matched with the connecting protrusion (61) in a limiting manner.

7. The shovel mechanism according to claim 6, characterized in that: A magnetic attraction piece is provided on one side of the limiting flange (52) facing the connecting protrusion (61), and the connecting protrusion (61) can be magnetically matched with the magnetic attraction piece.

8. The shovel mechanism according to claim 2, characterized in that: The shovel mechanism further comprises a receiving box (80) and a receiving drive assembly. The receiving box (80) is movably arranged on the first bracket (20). The receiving box (80) has a material receiving position located below the forming surface and a material discharging position located on one side of the forming surface. The receiving drive assembly drives the receiving box (80) to move between the material receiving position and the material discharging position.

9. The shovel mechanism according to claim 8, characterized in that: The mounting frame further comprises a second bracket (11), and the shovel mechanism further comprises a liquid receiving guide plate (90) arranged on the second bracket (11); when the receiving box (80) is in the material discharge position, the box opening of the receiving box (80) is located above the liquid receiving guide plate (90).

10. The shovel mechanism according to claim 2, characterized in that: The mounting frame further comprises a second bracket (11), the second bracket (11) comprising a platform base plate (111) located below the molding surface, the first bracket (20) comprising a top plate (21) and a support beam (22) supporting the top plate (21), the support beam (22) being connected to the platform base plate (111), the top plate (21) being arranged parallel to the molding surface, and the movable bracket (31) being arranged below the top plate (21).

11. The shovel mechanism according to claim 10, characterized in that: The shovel drive assembly is connected below the platform base plate (111), and comprises a drive motor (41), a transmission shaft (42) spaced apart from the motor shaft of the drive motor (41), a first transmission belt (43) drivingly connecting the motor shaft to the transmission shaft (42), a first pulley (44) arranged at one end of the transmission shaft (42), a second pulley (45) arranged on the top plate (21), and a second transmission belt (46) sleeved on the first pulley (44) and the second pulley (45); The driving motor (41) drives the transmission shaft (42) to rotate via the first transmission belt (43), so as to drive the scraper (32) on the movable bracket (31) to move via the second transmission belt (46).

12. The shovel mechanism according to claim 1, characterized in that: The shovel mechanism further comprises a first position detection member arranged on the liquid contact member (50), a second position detection member arranged on a side of the molding surface away from the liquid contact member (50), and a controller connected to signals of the first position detection member and the second position detection member, wherein the controller is control-connected to the shovel drive assembly.

13. The shovel mechanism according to claim 1, characterized in that: The scraper (32) comprises two end portions arranged along the length direction, and the blade of the scraper (32) is arranged between the two end portions; the scraper mechanism further comprises a liquid blocking member, which is arranged on the scraper (32) and is used to block the printing material on the scraper (32) from flowing toward the two end portions.

14. The shovel mechanism according to claim 1, characterized in that: The shoveling mechanism further comprises a detection module, and the detection module is used to detect the number of shoveling times of the shovel blade.

15. A 3D printer, characterized in that: It comprises the shovel mechanism as claimed in any one of claims 1 to 14.

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