Scraper knife module, automatic discharging device and 3D printing system

Abstract

The utility model provides a scraper knife module, an automatic discharging device and a 3D printing system, and relates to the technical field of 3D printing, a scraper knife assembly comprises an assembly seat body and a scraper knife main body, the assembly seat body is movably assembled on a module platform along a scraper knife movement track, and the scraper knife movement track is configured to be a linear track; the component seat body is configured to reciprocate relative to the module platform along the scraper knife movement track, and the scraper knife main body is elastically and movably assembled on the component seat body. On the basis of the elastic assembly state of the scraper knife body, the forming surface of the forming table can be tightly attached to the scraper knife body at the moment, and in the state, when the scraper knife body continues to move towards the forming table in the X-axis direction, the scraper knife body can be tightly attached to the forming surface of the forming table to shovel down the model part from the forming surface of the forming table; and the separation of the model parts is realized. In the process, the scraper knife body can only be attached to the top of the model piece to shovel the model piece down from the forming surface, and therefore the model piece cannot be damaged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of 3D printing, in particular to a spade module, an automatic unloading device and a 3D printing system. BACKGROUND

[0002] Liquid resin printing, also known as liquid resin photocuring 3D printing, is an additive manufacturing technology that uses liquid photosensitive resin as material and builds three-dimensional objects layer by layer through photocuring principle.

[0003] The basic principle of liquid resin printing is photocuring reaction. When light of a specific wavelength irradiates the liquid photosensitive resin, the photoinitiator in the resin absorbs light energy and generates active species such as free radicals or cations. These active species initiate the polymerization reaction of monomers and prepolymers in the resin, causing the liquid resin to rapidly change from liquid to solid. The solid model piece is printed on the forming table. When the model piece is printed, it is in a suspended state hanging on the forming table. At this time, the automatic unloading device is needed to separate the top end of the model piece from the forming table, so that the model piece falls freely,

[0004] However, in the prior art, the 3D printer and the automatic unloading device are two independent devices. Therefore, when matching and installing the 3D printer and the automatic unloading device, installation errors are easily generated between the forming table of the 3D printer and the spade of the automatic unloading device, which cannot guarantee that the forming table of the 3D printer and the spade of the automatic unloading device form an absolute level. Therefore, the printed model piece is easily damaged, resulting in a decrease in yield. Invention content

[0005] Therefore, it is necessary to provide a spade module, an automatic unloading device and a 3D printing system to solve the above technical problems.

[0006] The present application provides a spade module, which comprises:

[0007] A module platform is provided with a spade movement track;

[0008] A spade assembly comprises an assembly seat body and a spade main body. The assembly seat body is movably assembled on the module platform along the spade movement track. The spade movement track is configured as a linear track. The assembly seat body is configured to reciprocate relative to the module platform along the spade movement track. The spade main body is movably assembled on the assembly seat body.

[0009] In one embodiment, the spade assembly comprises:

[0010] A shovel adapter platform is elastically movably assembled in the assembly seat body, wherein a positioning connecting slot is arranged on the shovel adapter platform, the shovel body is fixedly assembled in the shovel adapter platform through the positioning connecting slot, and thus the shovel adapter platform is indirectly elastically movably assembled in the assembly seat body.

[0011] In one of the embodiments, the shovel module comprises:

[0012] An elastic assembly comprises a plurality of elastic elements, the shovel adapter platform is provided with at least two elastic connecting regions, a plurality of the elastic connecting regions are arranged along a direction parallel to the shovel movement track, each of the elastic connecting regions comprises at least two elastic connecting points, a plurality of the elastic connecting points comprised in each of the elastic connecting regions are arranged along a direction perpendicular to the shovel movement track, wherein each of the elastic connecting points is provided with one of the elastic elements, and the shovel adapter platform is elastically assembled in the assembly seat body through a plurality of the elastic elements in the elastic connecting regions.

[0013] In one of the embodiments, the shovel adapter platform is provided with a rotating connecting region, the rotating connecting region of the shovel adapter platform is provided with a rotating shaft body, and the shovel adapter platform is configured to be pivotally assembled in the assembly seat body through the rotating shaft body, wherein the shovel movement track is configured as a straight track, the rotating axis of the rotating shaft body is perpendicular to the shovel movement track, and the rotating connecting region is located between any two adjacent elastic connecting regions.

[0014] In one of the embodiments, the shovel module comprises:

[0015] A support frame comprises a frame body part and a frame support part connected with each other, the frame body part of the support frame is assembled in the module platform, the support frame is located below the shovel assembly, and the frame support part is configured to support a forming table of a 3D printer.

[0016] In one of the embodiments, the frame body part has an upper and lower through frame inner space, the frame body part is provided with a model receiving box, and the model receiving box is located in the frame inner space, the model receiving box is pivotally assembled in the frame body part, and a box body receiving opening of the model receiving box is configured to be pivoted to upwardly face the shovel assembly or downwardly away from the shovel assembly; and / or,

[0017] The frame support part comprises at least two support columns, and a plurality of the support columns are vertically assembled in the frame body part.

[0018] In one of the embodiments, the model receiving box has a box front side and a box rear side, the box front side of the model receiving box is pivotally assembled to the frame main body part, the box bottom wall of the model receiving box is configured as a curved wall surface, and the curvature of the curved wall surface of the box bottom wall gradually increases in the direction from the box front side to the box rear side.

[0019] The application provides an automatic discharging device, which comprises:

[0020] A device base is provided with a module movement track.

[0021] The shovel module is movably assembled to the device base along the module movement track, the module movement track is configured as a linear track, and the module movement track and the shovel movement track of the shovel module are parallel to each other.

[0022] In one of the embodiments, the automatic discharging device comprises:

[0023] A model concentrating box is detachably assembled to the device base, wherein the model concentrating box is located below the shovel assembly, and the model concentrating box is configured to collect model pieces.

[0024] The application provides a 3D printing system, which comprises:

[0025] A system base;

[0026] A 3D printer is assembled to the system base.

[0027] The automatic discharging device is assembled to the system base.

[0028] In the above-mentioned shovel module, automatic discharging device and 3D printing system, the shovel main body is movably assembled to the assembly seat body elastically, so that the shovel main body can form elastic movement relative to the assembly seat body when subjected to force, thereby forming an elastic adjustment allowance which can compensate for installation error (the above-mentioned difficulty in absolute level). When the shovel main body moves in the X-axis direction, the shovel main body can be longitudinally coincided with the forming table of the 3D printer in the Y-axis direction, and then the forming table moves along the Y-axis direction and elastically contacts the shovel main body. Specifically, the model piece is formed on the bottom surface of the forming table, i.e., the forming surface of the forming table is in the downward direction, rather than the upward direction.

[0029] At this point, the scraper body can move along the X-axis to below the forming platform, while the forming platform descends longitudinally along the Y-axis, bringing the scraper body into contact with the forming surface of the forming platform. Due to the elastic assembly of the scraper body, the forming surface of the forming platform can now fit tightly against the scraper body. In this state, as the scraper body continues to move along the X-axis towards the forming platform, it can scrape the model part off the forming surface of the platform, achieving separation of the model part. During this process, the scraper body only scrapes the top of the model part off the forming surface, thus avoiding damage to the model part. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of a 3D printing system provided in one embodiment of this application.

[0031] Figure 2 For example Figure 1 The exploded first-view view of the 3D printing system shown.

[0032] Figure 3 For example Figure 1 The exploded view of the 3D printing system shown is from a second perspective.

[0033] Figure 4 This is an internal structural diagram of an automatic feeding device provided in one embodiment of this application.

[0034] Figure 5 This is a partial structural diagram of a shovel module provided in one embodiment of this application.

[0035] Figure 6 This is a plan view of the shovel body provided in one embodiment of this application.

[0036] Figure 7 For example Figure 6 The image shown is a first-person perspective 3D view of the shovel body.

[0037] Figure 8 For example Figure 6 The image shown is a second-view perspective 3D view of the shovel body.

[0038] Icon labels:

[0039] 1000, system base; 2000, 3D printer; 3000, automatic unloading device; 2000, machine body; 2100, liquid tray; 2200, forming table; 3100, device base; 3200, shovel module; 3300, model collection box; 3101, module movement track; 3210, module platform; 3220, shovel assembly; 3230, elastic assembly; 3240, support frame; 3211, shovel movement track; 3221, assembly seat; 3222, shovel body; 3223, shovel adapter platform; 3223a, elastic connection area; 3223b, rotary connection area; 32221, knife body main area; 32222, knife body function area; 32222a, upper function surface; 32222b, lower function surface; 322221, liquid containing groove; 322222, liquid blocking protrusion; 322221a, virtual longitudinal line; 32222b1, lower unit surface; 3241, frame body; 3242, frame support; 3243, model receiving box. DETAILED DESCRIPTION

[0040] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described herein and by one of ordinary skill in the art without departing from the spirit of the present application, and it is therefore intended that all such variations be considered as falling within the scope of the present application. It should be understood that the descriptions of the present application are merely intended to be illustrative and that changes can be made to the description without departing from the spirit of the present application.

[0041] In the description of the present application, it should be understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0042] In addition, if these terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0043] In the present application, unless specifically defined otherwise and limited, if there are terms such as "mount", "connect", "connect", "fix", etc., these terms should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] In the present application, unless specifically defined otherwise and limited, if there are similar descriptions such as "first feature on" or "second feature", the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be directly above or obliquely above the first feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be directly below or obliquely below the first feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0045] It should be noted that if an element is referred to as "fixed to" or "provided to" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are for illustrative purposes only and are not the only embodiment.

[0046] Referring to Figures 1 to 8 As shown, the present application provides a 3D printing system, which comprises a system base 1000, a 3D printer 2000 and an automatic discharging device 3000, and the 3D printer 2000 is assembled on the system base 1000. Among them, the 3D printer 2000 is a 3D printer 2000 for implementing liquid resin photocuring 3D printing, and the liquid photosensitive resin (referred to as liquid resin) is a printing material, which is built layer by layer to construct a three-dimensional object through the principle of photocuring. The basic principle of liquid resin printing is photocuring reaction, that is, when a specific wavelength of light irradiates the liquid photosensitive resin, the photoinitiator in the resin will absorb light energy and produce active species such as free radicals or cations, which will cause the monomers and prepolymers in the resin to undergo polymerization reaction, making the liquid resin quickly change from liquid to solid.

[0047] As Figure 1As shown, the 3D printer 2000 comprises a machine body 2000, and a liquid tray 2100 and a forming table 2200 assembled on the machine body 2000, the forming table 2200 is movably assembled on the machine body 2000, and the forming table 2200 is located above the liquid tray 2100, the forming table 2200 is configured to move close to or away from the liquid tray 2100 on the machine body 2000, for example, the forming table 2200 can be raised and lowered by the lifting rail longitudinally arranged on the machine body 2000, thereby realizing the close or away movement relative to the liquid tray 2100 by raising and lowering.

[0048] The automatic feeding device 3000 is assembled on the system base 1000, and the automatic feeding device 3000 can comprise a device base 3100 and a shovel module 3200, the device base 3100 is provided with a module movement track 3101, and the shovel module 3200 is movably assembled on the device base 3100 along the module movement track 3101, wherein the module movement track 3101 is configured as a linear track arranged along the X-axis direction, so that the shovel module 3200 in the automatic feeding device 3000 can reciprocate relative to the device base 3100 along the X-axis direction based on the module movement track 3101.

[0049] As shown, Figure 1 The 3D printer 2000 and the automatic feeding device 3000 are also arranged along the X-axis direction, so that the shovel module 3200 in the automatic feeding device 3000 can reciprocate relative to the device base 3100 along the X-axis direction based on the module movement track 3101, that is, the shovel module 3200 can reciprocate relative to the 3D printer 2000 along the X-axis direction, so that the shovel module 3200 can move close to or away from the liquid tray 2100 and the forming table 2200 of the 3D printer 2000 along the X-axis direction, thereby realizing the separation of the printed model on the forming table 2200 when the shovel module 3200 moves close to the liquid tray 2100 and the forming table 2200 of the 3D printer 2000 along the X-axis direction, and realizing the transfer of the model.

[0050] Regarding the above-mentioned spade module 3200, the spade module 3200 can include a module platform 3210 and a spade assembly 3220, the module platform 3210 is provided with a spade movement track 3211, the spade assembly 3220 includes an assembly seat body 3221 and a spade main body 3222, the assembly seat body 3221 is movably assembled to the module platform 3210 along the spade movement track 3211, the spade movement track 3211 is configured as a linear track, the assembly seat body 3221 is configured to reciprocate relative to the module platform 3210 along the spade movement track 3211, wherein the spade main body 3222 is movably assembled to the assembly seat body 3221. Wherein the module movement track 3101 and the spade movement track 3211 of the spade module 3200 are parallel to each other, therefore, the spade movement track 3211 and the module movement track 3101 are both arranged along the X-axis direction.

[0051] At this time, the assembly seat body 3221 in the spade assembly 3220 can reciprocate relative to the module platform 3210 along the X-axis direction based on the spade movement track 3211, that is, the assembly seat body 3221 can drive the spade main body 3222 to reciprocate relative to the 3D printer 2000 along the X-axis direction, so that the spade main body 3222 can approach the forming table 2200 of the 3D printer 2000 along the X-axis direction, or the spade main body 3222 moves away from the forming table 2200 of the 3D printer 2000 along the X-axis direction, thereby causing the spade main body 3222 to approach the forming table 2200 of the 3D printer 2000 along the X-axis direction, so as to separate the printed and completed model piece on the forming table 2200, and realize the transfer of the model piece.

[0052] It should be noted that the module movement track 3101 and the spade movement track 3211 are mutually parallel and independent tracks, the module movement track 3101 can be used to make the spade module 3200 reciprocate relative to the device base 3100 along the X-axis direction, and in the spade module 3200, the spade movement track 3211 can make the spade assembly 3220 reciprocate relative to the module platform 3210 along the X-axis direction (that is, the assembly seat body 3221 drives the spade main body 3222 to reciprocate relative to the module platform 3210 along the X-axis direction). Therefore, the spade main body 3222 can move along the X-axis direction based on any one of the module movement track 3101 and the spade movement track 3211, wherein the reciprocating movement of the spade module 3200 relative to the device base 3100 along the X-axis direction can realize the movement of the spade main body 3222 along the X-axis direction, and the reciprocating movement of the spade assembly 3220 relative to the module platform 3210 along the X-axis direction can also realize the movement of the spade main body 3222 along the X-axis direction.

[0053] To address the problem that the forming stage 2200 of the 3D printer 2000 and the scraper body 3222 of the automatic unloading device 3000 are difficult to achieve absolute horizontality, which easily damages the model parts when separating them relative to the forming stage 2200, this application specifies that the scraper body 3222 is elastically and movably assembled to the component base 3221. Since the scraper body 3222 is elastically and movably assembled to the component base 3221, the scraper body 3222 can elastically move relative to the component base 3221 when subjected to force, thereby forming an elastic adjustment margin that can compensate for installation errors (the aforementioned difficulty in achieving absolute horizontality).

[0054] like Figure 5 As shown, when the scraper body 3222 moves in the X-axis direction as described above, the scraper body 3222 can longitudinally coincide with the forming stage 2200 of the 3D printer 2000 in the Y-axis direction. Then, the forming stage 2200 moves along the Y-axis direction and elastically contacts the scraper body 3222. Specifically, the model part is formed on the bottom surface of the forming stage 2200, that is, the forming surface of the forming stage 2200 faces downwards, rather than upwards.

[0055] At this point, the scraper body 3222 can move along the X-axis to below the forming platform 2200, while the forming platform 2200 descends longitudinally along the Y-axis, causing the scraper body 3222 to contact the forming surface of the forming platform 2200. Based on the elastic assembly state of the scraper body 3222, the forming surface of the forming platform 2200 can then form a tight fit with the scraper body 3222. In this state, as the scraper body 3222 continues to move along the X-axis towards the forming platform 2200, it can scrape the model part off the forming surface of the forming platform 2200 while remaining close to it, thus separating the model part. During this process, the scraper body 3222 will only scrape the top of the model part off the forming surface, thus avoiding damage to the model part.

[0056] The blade body 3222 can be directly or indirectly elastically mounted to the component base 3221. For example, in one embodiment, the blade assembly 3220 may further include a blade adapter platform 3223, which is elastically mounted to the component base 3221. The blade adapter platform 3223 is provided with a positioning connection groove, and the tail end of the blade body 3222 is fixedly mounted to the blade adapter platform 3223 through the positioning connection groove. The blade body 3222 and the blade adapter platform 3223 can be relatively fixedly connected by threaded parts, etc., so that the blade body 3222 can be indirectly elastically mounted to the component base 3221 through the blade adapter platform 3223.

[0057] In one of the embodiments, the shovel module 3200 can include an elastic assembly 3230, the elastic assembly 3230 includes a plurality of elastic elements, the shovel adapter platform 3223 is provided with at least two elastic connection areas 3223a, the plurality of elastic connection areas 3223a are arranged along the direction parallel to the shovel movement track 3211, each of the elastic connection areas 3223a includes at least two elastic connection points, the plurality of elastic connection points included in each of the elastic connection areas 3223a are arranged along the direction perpendicular to the shovel movement track 3211, wherein each of the elastic connection points is equipped with one of the elastic elements, and the shovel adapter platform 3223 is elastically assembled to the assembly seat body 3221 through the plurality of elastic elements in the plurality of elastic connection areas 3223a.

[0058] For example, in one of the embodiments, the elastic assembly 3230 can include four elastic elements, the shovel adapter platform 3223 is provided with two elastic connection areas 3223a, the two elastic connection areas 3223a are arranged in front and back along the X-axis direction, each of the elastic connection areas 3223a includes two elastic connection points, thus, the two elastic connection areas 3223a can coexist with four elastic connection points, at this time, the four elastic connection points can be connected to form a square, such as a rectangle or a square, etc.

[0059] The plurality of elastic connection points included in each of the elastic connection areas 3223a are arranged left and right along the Y-axis direction, wherein each of the elastic connection points is equipped with one of the elastic elements, at this time, the four elastic elements can also be connected to form a square, such as a rectangle or a square, etc. Based on the arrangement of the four elastic elements, the shovel adapter platform 3223 can be elastically assembled to the assembly seat body 3221 through the four elastic elements, at this time, as shown in Figure 5 The shovel body 3222 can realize the “nodding” movement based on the arrangement of the four elastic elements, that is, the up and down movement along the direction indicated by the arrow shown in Figure 5

[0060] In one of the embodiments, the shovel adapter platform 3223 is provided with a rotating connection area 3223b, the rotating connection area 3223b of the shovel adapter platform 3223 is equipped with a rotating shaft body, and the shovel adapter platform 3223 is further configured to be pivotally assembled to the assembly seat body 3221 through the rotating shaft body, wherein the shovel movement track 3211 is configured as a straight track, the rotating axis of the rotating shaft body is perpendicular to the shovel movement track 3211, and the rotating connection area 3223b is located between any adjacent elastic connection areas 3223a.

[0061] ​Therefore, based on the synchronous cooperation of the rotating shaft body and the plurality of elastic elements, the spade body 3222 can realize the "elastic nodding" movement along the fixed rotating axis. At this time, when the spade body 3222 is in contact with the forming surface of the forming table 2200, the spade body 3222 can realize the "elastic nodding" movement along the fixed rotating axis to adapt to the close fitting with the forming surface of the forming table 2200, so that when the spade body 3222 moves along the X-axis direction towards the forming table 2200, the spade body 3222 can be attached to the forming surface to shovel the model piece.

[0062] In one embodiment, the spade module 3200 can further include a support frame 3240, which includes a connected frame body part 3241 and a frame support part 3242. The frame body part 3241 of the support frame 3240 is assembled to the module platform 3210, and the support frame 3240 is located below the spade assembly 3220. The frame support part 3242 is configured to support the forming table 2200 of the 3D printer 2000. The frame support part 3242 can include at least two support columns, and the support columns are vertically assembled to the frame body part 3241 to support the forming table 2200 at the rear side of the forming table 2200. The rear side of the forming table 2200 is the side away from the spade body 3222 along the X-axis direction, and the front side of the forming table 2200 is the side towards the spade body 3222 along the X-axis direction.

[0063] The movement of the support frame 3240 mainly depends on the reciprocating movement of the spade module 3200 along the X-axis direction relative to the device base 3100. At this time, the support frame 3240 included in the spade module 3200 can also move along the X-axis direction to approach or move away from the forming table 2200. First, the forming table 2200 can be higher than the support frame 3240 in the Y-axis direction. At this time, the spade module 3200 moves along the X-axis direction relative to the device base 3100, so that the support frame 3240 approaches the forming table 2200 along the X-axis direction. When the frame support part 3242 of the support frame 3240 exceeds the forming table 2200 in the X-axis direction, the forming table 2200 can fall, so that the frame support part 3242 is located at the rear side of the forming table 2200, and the position of the support frame 3240 can be adjusted along the X-axis direction, so that the frame support part 3242 can be supported at the rear side of the forming table 2200.

[0064] At this time, the shovel assembly 3220 reciprocates along the X-axis direction relative to the mold platform 3210 (i.e., the assembly seat body 3221 drives the shovel main body 3222 to reciprocate along the X-axis direction relative to the mold platform 3210). At this time, although the shovel main body 3222 can move along the X-axis direction based on the shovel movement track 3211, the support frame 3240 remains stationary and always supports the rear side of the forming table 2200. In this supported state, the movement of the shovel main body 3222 along the X-axis direction can drive the shovel main body 3222 to move towards the forming table 2200, thereby scraping the model piece relative to the forming surface of the forming table 2200. In this process, although the shovel main body 3222 can be subjected to a force from the front side of the forming table 2200 to the rear side of the forming table 2200, the stability of the forming table 2200 can be ensured due to the support of the support frame 3240 to the rear side of the forming table 2200.

[0065] The shovel assembly 3220 includes an assembly seat body 3221 and a shovel main body 3222, and the shovel main body 3222 is assembled to the assembly seat body 3221. The shovel assembly 3220 reciprocates along the X-axis direction relative to the mold platform 3210, thereby driving the shovel main body 3222 to move along the X-axis direction based on the shovel movement track 3211 to scrape the model piece on the forming surface. In this process, the model piece is removed from the liquid resin, and the surface of the model piece is therefore coated with the liquid resin, including the portion between the model piece and the forming surface. Therefore, when the shovel main body 3222 scrapes the model piece from the forming surface, the shovel main body 3222 is also easily coated with the liquid resin, which increases the difficulty of subsequent cleaning of the shovel main body 3222.

[0066] To solve the problem of the shovel main body 3222 being coated with the liquid resin, the structure of the shovel main body 3222 is designed as follows. In one embodiment, the shovel main body 3222 can be defined to include a connected main body main part 32221 and a main body functional part 32222. The shovel main body 3222 is configured to have a main body transverse direction and a main body longitudinal direction perpendicular to each other. The main body main part 32221 and the main body functional part 32222 are arranged along the main body longitudinal direction, and the area of the main body main part 32221 is larger than that of the main body functional part 32222. The main body functional part 32222 of the shovel main body 3222 is mainly used to scrape the model piece, i.e., the main body functional part 32222 of the shovel main body 3222 is closer to the forming table 2200 and the model piece than the main body main part 32221. When the shovel main body 3222 moves along the X-axis, the main body functional part 32222 contacts the forming table 2200 to scrape the model piece.

[0067] Therefore, as shown in FIG. 6, the main body functional part 32222 of the shovel main body 3222 is configured to have a plurality of scraping grooves 32223. The scraping grooves 32223 are arranged along the main body transverse direction, and the area of the main body functional part 32222 is smaller than that of the main body main part 32221. The main body functional part 32222 of the shovel main body 3222 is mainly used to scrape the model piece, i.e., the main body functional part 32222 of the shovel main body 3222 is closer to the forming table 2200 and the model piece than the main body main part 32221. When the shovel main body 3222 moves along the X-axis, the main body functional part 32222 contacts the forming table 2200 to scrape the model piece. Figures 6 to 8As shown, the tool body functional part 32222 can be defined with opposite upper and lower functional surfaces 32222a and 32222b, at least one of which is provided with a liquid drainage structure configured to guide the flow of liquid printing material out of the tool body main area 32221.

[0068] When the spatula assembly 3220 reciprocates along the X-axis direction relative to the mold group platform 3210, driving the spatula body 3222 to move along the spatula movement track 3211 in the X-axis direction, the model piece on the forming surface is scraped off, the tool body functional part 32222 will contact the forming table 2200, and the liquid resin adhered to the surface of the model piece will flow from the tool body functional part 32222 to the tool body main area 32221 along the X-axis direction. When the liquid resin passes through the liquid drainage structure, it will be guided out of the tool body main area 32221, thereby avoiding the flow of liquid resin to the tool body main area 32221, so that only a small part of the tool body functional part 32222 on the spatula body 3222 has liquid resin adhered, and the tool body main area 32221 occupies most of the area and does not have liquid resin adhered, which makes the subsequent cleaning of the spatula body 3222 much simpler.

[0069] The liquid drainage structure can be realized by suitable structures such as pipelines, grooves, protrusions, etc. For example, the liquid drainage structure can include liquid receiving grooves 322221 on the upper functional surface 32222a and liquid blocking protrusions 322222 on the lower functional surface 32222b, i.e. at least one liquid receiving groove 322221 is opened on the upper functional surface 32222a of the tool body functional part 32222, the liquid receiving groove 322221 is configured as a linear groove, each liquid receiving groove 322221 is configured to be arranged on the upper functional surface 32222a of the tool body functional part 32222 along the tool body transverse direction of the spatula body 3222, at this time the tool body transverse direction of the spatula body 3222 is configured to be parallel to the Y-axis direction during assembly and working process. The linear groove arranged along the Y-axis direction can form a liquid receiving function, thereby realizing the liquid drainage function, so that the liquid resin can flow in the liquid receiving groove 322221 along the Y-axis direction, rather than flowing to the tool body main area 32221 along the X-axis direction. Therefore, the liquid resin flows in the liquid receiving groove 322221 along the Y-axis direction to the side edge of the spatula body 3222 and can fall by gravity, and then falls back into the liquid tray 2100.

[0070] The liquid drainage structure can also include at least one liquid blocking protrusion 322222 provided on the lower functional surface 32222b of the tool body functional part 32222, the liquid blocking protrusion 322222 is configured as a linear protrusion, each of the liquid blocking protrusions 322222 is configured to be provided on the lower functional surface 32222b of the tool body functional part 32222 along the tool body transverse direction of the spatula body 3222, at this time, the tool body transverse direction of the spatula body 3222 is configured to be parallel to the Y-axis direction during assembly and operation, the linear protrusion provided along the Y-axis direction can form a block to the liquid resin, at this time, since the liquid resin moves on the lower functional surface 32222b, only the liquid resin flowing along the X-axis direction to the tool body main part 32221 needs to be blocked, so that the liquid resin can be caused to fall relative to the gravity of the spatula body 3222 and fall back into the liquid tray 2100, therefore, the drainage mode is different from the above-mentioned drainage along the Y-axis direction on the upper functional surface 32222a.

[0071] Continuing to refer to Figure 6 As shown, the liquid receiving groove 322221 is configured to be defined with a virtual longitudinal line 322221a, the virtual longitudinal line 322221a is a virtual line, mainly used to indicate the trajectory of the liquid receiving groove 322221 opened in the depth direction, therefore, the groove depth of the liquid receiving groove 322221 is configured to be opened along the virtual longitudinal line 322221a. At this time, the virtual longitudinal line 322221a can be defined to have an inclined angle relative to the upper functional surface 32222a of the tool body functional part 32222, and the virtual longitudinal line 322221a is provided along the tool body longitudinal direction of the spatula body 3222. As Figure 6 As shown, the liquid receiving groove 322221 defined by the above-mentioned virtual longitudinal line 322221a can make the groove opening tilt towards the molding table 2200 along the X-axis direction, rather than making the groove opening of the liquid receiving groove 322221 tilt towards the Z-axis direction after being opened on the upper functional surface 32222a. This design of the groove opening tilt can make the groove opening of the liquid receiving groove 322221 can be generally along the X-axis direction towards the liquid resin and smoothly receive the liquid resin during the process of the spatula body 3222 scraping the model piece, improving the drainage function of the liquid resin.

[0072] Continuing to refer to Figures 6 to 8As shown, the lower functional surface 32222b of the tool body functional part 32222 is divided into at least three lower unit surfaces 32222b1, and a plurality of liquid blocking protrusions 322222 are arranged between adjacent lower unit surfaces 32222b1 along the longitudinal direction of the tool body 3222. In addition, different lower unit surfaces 32222b1 have different surface inclinations. Therefore, different surface inclinations of different lower unit surfaces 32222b1 can have different effects on the flow of liquid resin, and the greater the surface inclination, the easier it is to make the liquid resin fall by gravity.

[0073] In one embodiment, the lower functional surface 32222b of the tool body functional part 32222 is divided into three lower unit surfaces 32222b1, and one liquid blocking protrusion 322222 is arranged between adjacent lower unit surfaces 32222b1. In addition, the lower unit surface 32222b1 located in the middle of the three lower unit surfaces 32222b1 has a smaller surface inclination than the other two lower unit surfaces 32222b1. In addition to this, those skilled in the art can design the surface inclination of each liquid blocking protrusion 322222 and each lower unit surface 32222b1 according to actual needs, which is not limited herein.

[0074] In one embodiment, the frame body part 3241 has an upper and lower through frame inner space, and the frame body part 3241 is provided with a model receiving box 3243 located in the frame inner space. The model receiving box 3243 is rotatably assembled to the frame body part 3241, and the box body receiving opening of the model receiving box 3243 is configured to be rotated upwardly toward the spatula assembly 3220 or downwardly away from the spatula assembly 3220. Therefore, when the box body receiving opening of the model receiving box 3243 is rotated upwardly toward the spatula assembly 3220, the model pieces dropped by the tool body 3222 can directly fall by gravity into the model receiving box 3243. When the capacity of the model receiving box 3243 reaches or the model pieces are received, the box body receiving opening of the model receiving box 3243 can be rotated downwardly away from the spatula assembly 3220, and all the model pieces received by the model receiving box 3243 can further fall by gravity from the model receiving box 3243.

[0075] At this time, a larger-capacity model collection box 3300 can be arranged below the model receiving box 3243 to collect all the model pieces. In one embodiment, the automatic unloading device 3000 includes the model collection box 3300, which is detachably assembled to the device base 3100. The model collection box 3300 is arranged below the spatula assembly 3220 and is configured to collect the model pieces.

[0076] In one embodiment, the model receiving box 3243 has a front side and a rear side. The front side of the model receiving box 3243 is the direction along the X-axis toward the forming table 2200, and the rear side of the model receiving box 3243 is the direction along the X-axis away from the forming table 2200. The front side of the model receiving box 3243 is pivotally assembled to the frame main body 3241. The bottom wall of the model receiving box 3243 is configured as a curved wall surface, and the curvature of the curved wall surface gradually increases from the front side to the rear side. The gradually changing curvature allows the model pieces to smoothly fall out of the model receiving box 3243.

[0077] The technical features of the above embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combinations of the technical features do not contradict each other, they should be considered within the scope of the present disclosure.

[0078] The above embodiments only express several implementation manners of the present application, and the description is specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A shovel module, characterized in that, The shovel module comprises: a module platform provided with a shovel movement track; a shovel assembly comprising an assembly seat and a shovel main body, the assembly seat is movably assembled on the module platform along the shovel movement track, the shovel movement track is configured as a linear track, the assembly seat is configured for reciprocating movement relative to the module platform along the shovel movement track, wherein the shovel main body is movably assembled on the assembly seat.

2. The blade module of claim 1, wherein, The shovel assembly comprises: a shovel adapter platform movably assembled on the assembly seat, wherein the shovel adapter platform is provided with a positioning connection groove, and the shovel main body is fixedly assembled on the shovel adapter platform through the positioning connection groove, so that the shovel main body is indirectly movably assembled on the assembly seat through the shovel adapter platform.

3. The blade module of claim 2, wherein, The shovel module comprises: a resilient assembly comprising a plurality of resilient elements, the shovel adapter platform is provided with at least two resilient connection regions, a plurality of the resilient connection regions are arranged along a direction parallel to the shovel movement track, each of the resilient connection regions comprises at least two resilient connection points, a plurality of the resilient connection points in each of the resilient connection regions are arranged along a direction perpendicular to the shovel movement track, wherein each of the resilient connection points is provided with one of the resilient elements, and the shovel adapter platform is movably assembled on the assembly seat through a plurality of the resilient elements in the plurality of the resilient connection regions.

4. The blade module of claim 3, wherein, The shovel adapter platform is provided with a rotating connection region, the rotating connection region of the shovel adapter platform is provided with a rotating shaft body, and the shovel adapter platform is further configured to be pivotally assembled on the assembly seat through the rotating shaft body, wherein the shovel movement track is configured as a straight track, the rotating axis of the rotating shaft body is perpendicular to the shovel movement track, and the rotating connection region is located between any adjacent resilient connection region.

5. The blade module of claim 1, wherein, The shovel module comprises: a support frame comprising a frame main body portion and a frame support portion connected together, the frame main body portion of the support frame is assembled on the module platform, the support frame is located below the shovel assembly, and the frame support portion is configured to support a forming table of a 3D printer.

6. The blade module of claim 5, wherein, The frame main body portion has an upper and lower through frame inner space, the frame main body portion is provided with a model receiving box located in the frame inner space, the model receiving box is pivotally assembled on the frame main body portion, and the box body receiving opening of the model receiving box is configured to be pivoted to upwardly face the shovel assembly or downwardly away from the shovel assembly. And / or, the frame support portion comprises at least two support columns, and a plurality of the support columns are vertically assembled on the frame main body portion.

7. The blade module of claim 6, wherein, The model receiving box has a box front side and a box rear side, the box front side of the model receiving box is pivotally assembled to the frame main body, a box bottom wall of the model receiving box is configured as a curved wall surface, and a curvature of the curved wall surface of the box bottom wall gradually increases in a direction from the box front side to the box rear side.

8. An automatic unloading device, characterized by, The automatic discharging device comprises: A device base is provided with a mold group movement track; The shovel mold group is movably assembled to the device base along the mold group movement track, the mold group movement track is configured as a linear track, and the mold group movement track and the shovel movement track of the shovel mold group are parallel to each other.

9. The automatic unloading device according to claim 8, characterized in that, The automatic discharging device comprises: A model concentrating box is detachably assembled to the device base, wherein the model concentrating box is located below the shovel assembly, and the model concentrating box is configured to collect model pieces.

10. A 3D printing system, characterized by The 3D printing system comprises: A system base; A 3D printer is assembled to the system base; The automatic discharging device according to any one of claims 1-9 is assembled to the system base.

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