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

Abstract

The utility model provides a scraper knife assembly, a module, an automatic discharging device and a 3D printing system, a scraper knife main body is assembled on an assembly seat body, the scraper knife main body comprises a knife body main area part and a knife body function part which are connected, and the scraper knife main body is configured to have a knife body transverse direction and a knife body longitudinal direction which are perpendicular to each other; the cutter body main area part and the cutter body function part are longitudinally arranged along the cutter body, the area of the cutter body main area part is larger than that of the cutter body function part, and the cutter body function part is provided with an upper function surface and a lower function surface which face opposite directions. The upper functional surface and the lower functional surface are provided with liquid drainage structures, and the liquid drainage structures are used for guiding liquid printing materials to flow out of the knife body main area part. Therefore, the liquid resin can be guided out of the knife body main area part when passing through the liquid drainage structure, so that the liquid resin is prevented from flowing to the knife body main area part, and the subsequent cleaning of the scraper knife main body becomes simpler.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of 3D printing, in particular to a spade assembly, a 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 to build three-dimensional objects layer by layer through photocuring principle.

[0003] The basic principle of liquid resin printing is photocuring reaction, that is, 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, which initiate the polymerization reaction of monomers and prepolymers in the resin, causing the liquid resin to rapidly change from liquid to solid, printing a solid model piece on the forming table, wherein the model piece is in a suspended state when printing is completed, and the top end of the model piece needs to be separated from the forming table by an automatic unloading device to allow the model piece to fall freely,

[0004] However, the model piece is removed from the liquid resin during the forming process, so the surface of the model piece will be contaminated with liquid resin, including the part connecting the model piece and the forming table, so when the spade is used to shovel the model piece off the forming table, the spade will also be contaminated with liquid resin, making it more difficult to clean the spade later. Content of the utility model

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

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

[0007] a component seat;

[0008] a spade body assembled in the component seat, the spade body comprising a connected main body part and a functional body part, wherein the spade body is configured to have a main body transverse direction and a main body longitudinal direction perpendicular to each other, the main body part and the functional body part are arranged along the main body longitudinal direction, and the area of the main body part is larger than that of the functional body part; wherein the functional body part has an upper functional surface and a lower functional surface facing in opposite directions, at least one of the upper functional surface and the lower functional surface is provided with a liquid drainage structure, and the liquid drainage structure is configured to guide the liquid printing material to flow out of the main body part.

[0009] In one embodiment, the liquid drainage structure comprises:

[0010] at least one liquid receiving groove is opened on the upper functional surface of the blade functional part, the liquid receiving groove is configured as a linear groove, and each liquid receiving groove is configured to be arranged on the upper functional surface of the blade functional part along the blade body of the spade body in a transverse direction; and / or,

[0011] at least one liquid blocking protrusion is arranged on the lower functional surface of the blade functional part, the liquid blocking protrusion is configured as a linear protrusion, and each liquid blocking protrusion is configured to be arranged on the lower functional surface of the blade functional part along the blade body of the spade body in a transverse direction.

[0012] In one of the embodiments, the liquid receiving groove is configured to be defined with a virtual longitudinal line, and the groove depth of the liquid receiving groove is configured to be opened along the virtual longitudinal line, wherein the virtual longitudinal line has an inclined angle relative to the upper functional surface of the blade functional part, and the virtual longitudinal line is arranged in a longitudinal direction along the blade body of the spade body.

[0013] In one of the embodiments, the lower functional surface of the blade functional part is divided into at least three lower unit surfaces, a plurality of the lower unit surfaces are arranged in a longitudinal direction along the blade body of the spade body, at least one liquid blocking protrusion is arranged between adjacent lower unit surfaces, and different lower unit surfaces have different surface inclinations.

[0014] In one of the embodiments, the lower functional surface of the blade functional part is divided into three lower unit surfaces, one liquid blocking protrusion is arranged between adjacent lower unit surfaces, and the adjacent lower unit surfaces are divided based on the liquid blocking protrusion therebetween, wherein the surface inclination of one of the lower unit surfaces located in the middle of the three lower unit surfaces is smaller than the surface inclinations of the other two lower unit surfaces.

[0015] In one of the embodiments, the spade body is elastically movably assembled in the assembly seat.

[0016] In one of the embodiments, the spade assembly comprises:

[0017] a spade adapter platform, the spade adapter platform is elastically movably assembled in the assembly seat, and the spade body is assembled in the spade adapter platform, so that the spade body is indirectly elastically movably assembled in the assembly seat through the spade adapter platform.

[0018] The present application provides a spade module, which comprises:

[0019] a module platform, the module platform is provided with a spade movement track;

[0020] The shovel assembly is movably assembled on the mold platform along the shovel movement track, the shovel movement track is configured as a linear track, and the shovel assembly is configured to reciprocate relative to the mold platform along the shovel movement track.

[0021] The application provides an automatic discharging device, which comprises:

[0022] A device base is provided with a mold movement track;

[0023] The shovel mold is movably assembled on the device base along the mold movement track, the mold movement track is configured as a linear track, and the mold movement track and the shovel movement track of the shovel mold are parallel to each other.

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

[0025] A system base;

[0026] A 3D printer is assembled on the system base, wherein the 3D printer comprises a machine body, a liquid tank and a forming table assembled on the machine body, and the forming table is movably assembled on the machine body and is configured to approach or move away from the liquid tank on the machine body.

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

[0028] When the shovel assembly reciprocates along the X-axis direction relative to the mold platform, the shovel body drives the shovel movement track to move in the X-axis direction, and the model piece on the forming surface is scooped, the cutter body functional part contacts the forming table, and the liquid resin on the surface of the model piece flows from the cutter body functional part to the cutter body main area part in the X-axis direction. When the liquid resin passes through the liquid drainage structure, it is guided out of the cutter body main area part, thereby avoiding the flow of liquid resin to the cutter body main area part, so that only a small part of the cutter body functional part on the shovel body can have liquid resin, and the cutter body main area part occupies most of the area. The area will not be contaminated with liquid resin, which makes the subsequent cleaning of the shovel body much simpler. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 The structure diagram of the 3D printing system provided by an embodiment of the application is shown.

[0030] Figure 2 The first perspective exploded view of the 3D printing system is shown. Figure 1 The first perspective exploded view of the 3D printing system is shown.

[0031] Figure 3 A second perspective exploded view of the 3D printing system as Figure 1 shown.

[0032] Figure 4 An internal structure diagram of the automatic unloading device according to an embodiment of the present application.

[0033] Figure 5 A partial structure diagram of the shovel blade module according to an embodiment of the present application.

[0034] Figure 6 A plan structure diagram of the shovel blade body according to an embodiment of the present application.

[0035] Figure 7 A first perspective view of the shovel blade body as Figure 6 shown.

[0036] Figure 8 A second perspective view of the shovel blade body as Figure 6 shown.

[0037] Reference numerals:

[0038] 1000, system base; 2000, 3D printer; 3000, automatic unloading device;

[0039] 2000, machine body; 2100, liquid tray; 2200, forming table;

[0040] 3100, device base; 3200, shovel blade module; 3300, model collection box;

[0041] 3101, module movement track;

[0042] 3210, module platform; 3220, shovel blade assembly; 3230, elastic assembly; 3240, support frame;

[0043] 3211, shovel blade movement track;

[0044] 3221, assembly seat body; 3222, shovel blade body; 3223, shovel blade adapter platform; 3223a, elastic connection area; 3223b, rotating connection area;

[0045] 32221, blade body main part; 32222, blade body functional part;

[0046] 32222a, upper functional surface; 32222b, lower functional surface; 322221, liquid containing groove; 322222, liquid blocking protrusion;

[0047] 322221a, virtual depth line; 32222b1, lower cell surface;

[0048] 3241, frame main body portion; 3242, frame support portion; 3243, model receiving box. DETAILED DESCRIPTION

[0049] 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. It will be apparent, however, to one skilled in the art, that the present application can be practiced without using some or all of these specific details, and that the present application is not limited to the specific embodiments disclosed below.

[0050] In the description of the present application, it is to be understood that the orientation or positional relationship indicated by these terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are merely for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present application.

[0051] In addition, if these terms "first", "second" appear, these terms are only for the purpose of description, and should not be understood as indicating or implying relative importance or implying 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 "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0052] In the present application, unless otherwise specifically defined and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be broadly understood. 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.

[0053] In the present application, unless otherwise explicitly specified and limited, if there is a description such as "on" or "under" or the like of a first feature to a second feature, it can mean 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", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is horizontally higher than the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is horizontally lower than the second feature.

[0054] It should be noted that if an element is referred to as "fixed to" or "provided on" another element, it can be directly on the other 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 only for illustrative purposes and do not represent the only implementation.

[0055] 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. Wherein, 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 constructed layer by layer to build a three-dimensional object through the principle of photocuring. The basic principle of liquid resin printing is photocuring reaction, that is, when the light of a specific wavelength 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, so that the liquid resin rapidly changes from liquid to solid state.

[0056] As Figure 1 As shown, the 3D printer 2000 comprises a machine body 2000, 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, and 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 from the liquid tray 2100 by rising and falling.

[0057] The automatic feeding device 3000 is mounted on the system base 1000. Regarding the aforementioned automatic feeding device 3000, it may include a device base 3100 and a blade module 3200. The device base 3100 is provided with a module motion track 3101. The blade module 3200 is movably mounted on the device base 3100 along the module motion track 3101. The module motion track 3101 is configured as a linear track and is arranged along the X-axis direction. Therefore, the blade 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 motion track 3101.

[0058] like Figure 1 As shown, the 3D printer 2000 and the automatic feeding device 3000 are also arranged along the X-axis. Therefore, the scraper module 3200 in the automatic feeding device 3000 reciprocates relative to the device base 3100 along the X-axis based on the module motion track 3101. That is, the scraper module 3200 can reciprocate relative to the 3D printer 2000 along the X-axis, so that the scraper module 3200 can approach the liquid material tray 2100 and the forming stage 2200 of the 3D printer 2000 along the X-axis, or the scraper module 3200 can move away from the liquid material tray 2100 and the forming stage 2200 of the 3D printer 2000 along the X-axis. Thus, when the scraper module 3200 approaches the liquid material tray 2100 and the forming stage 2200 of the 3D printer 2000 along the X-axis, it separates the printed model part on the forming stage 2200, realizing the transfer of the model part.

[0059] Regarding the aforementioned blade module 3200, the blade module 3200 may include a module platform 3210 and a blade assembly 3220. The module platform 3210 is provided with a blade movement track 3211. The blade assembly 3220 includes an assembly base 3221 and a blade body 3222. The assembly base 3221 is movably mounted on the module platform 3210 along the blade movement track 3211. The blade movement track 3211 is configured as a linear track, and the assembly base 3221 is configured for reciprocating motion relative to the module platform 3210 along the blade movement track 3211. The blade body 3222 is elastically movably mounted on the assembly base 3221. The module movement track 3101 and the blade movement track 3211 of the blade module 3200 are parallel to each other; therefore, both the blade movement track 3211 and the module movement track 3101 are arranged along the X-axis direction.

[0060] At this time, the component seat body 3221 in the spade assembly 3220 can reciprocate along the X-axis direction relative to the module platform 3210 based on the spade movement track 3211, that is, the component seat body 3221 can drive the spade main body 3222 to reciprocate along the X-axis direction relative to the 3D printer 2000, 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 is away from the forming table 2200 of the 3D printer 2000 along the X-axis direction, so that when the spade main body 3222 approaches the forming table 2200 of the 3D printer 2000 along the X-axis direction, the model piece on the forming table 2200 is separated, and the model piece is transferred.

[0061] It should be noted that the module movement track 3101 and the spade movement track 3211 are parallel and independent tracks, the module movement track 3101 can be used to make the spade module 3200 reciprocate along the X-axis direction relative to the device base 3100, and in the spade module 3200, the spade movement track 3211 can make the spade assembly 3220 reciprocate along the X-axis direction relative to the module platform 3210 (that is, the component seat body 3221 drives the spade main body 3222 to reciprocate along the X-axis direction relative to the module platform 3210). 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 spade module 3200 reciprocates along the X-axis direction relative to the device base 3100 to realize the movement of the spade main body 3222 along the X-axis direction, and the spade assembly 3220 reciprocates along the X-axis direction relative to the module platform 3210 to also realize the movement of the spade main body 3222 along the X-axis direction.

[0062] In order to solve the problem that the forming table 2200 of the 3D printer 2000 and the spade main body 3222 of the automatic unloading device 3000 are difficult to form an absolute level, and the model piece is easily damaged when separating the model piece relative to the forming table 2200, the spade main body 3222 is elastically movably assembled in the component seat body 3221. Since the spade main body 3222 is elastically movably assembled in the component seat body 3221, the spade main body 3222 can move elastically relative to the component seat body 3221 when stressed, thereby forming an elastic adjustment allowance that can compensate for installation errors (mentioned above).

[0063] As Figure 5As shown, when the shovel body 3222 moves in the X-axis direction in the above-mentioned manner, the shovel body 3222 can be longitudinally coincident with the forming table 2200 of the 3D printer 2000 in the Y-axis direction, and then the forming table 2200 moves along the Y-axis direction and elastically contacts the shovel body 3222. Specifically, the model piece is formed on the bottom surface of the forming table 2200, i.e., the forming surface of the forming table 2200 is directed downward, rather than upward.

[0064] At this time, the shovel body 3222 can move along the X-axis direction to the lower side of the forming table 2200, and the forming table 2200 longitudinally descends along the Y-axis direction so that the shovel body 3222 contacts the forming surface of the forming table 2200. Based on the elastic assembly state of the shovel body 3222, the forming surface of the forming table 2200 can be closely attached to the shovel body 3222 at this time. In this state, when the shovel body 3222 continues to move along the X-axis direction toward the forming table 2200, the shovel body 3222 can scrape the model piece from the forming surface of the forming table 2200 closely attached to the forming surface of the forming table 2200, thereby separating the model piece. In this process, the shovel body 3222 only scrapes the model piece from the forming surface by the top of the model piece, and thus does not damage the model piece.

[0065] The shovel body 3222 can be directly or indirectly elastically movably assembled in the assembly seat body 3221. For example, in an embodiment, the shovel assembly 3220 can further include a shovel adapter platform 3223 movably assembled in the assembly seat body 3221. The shovel adapter platform 3223 is provided with a positioning connecting groove, and the tail end of the shovel body 3222 is fixedly assembled in the shovel adapter platform 3223 through the positioning connecting groove. The relative fixed connection between the shovel body 3222 and the shovel adapter platform 3223 can be achieved by a threaded member or the like. Thus, the shovel body 3222 can be indirectly elastically movably assembled in the assembly seat body 3221 through the shovel adapter platform 3223.

[0066] 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 a 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 a 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.

[0067] 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.

[0068] 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 .

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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 moves along the X-axis direction to approach the forming table 2200. 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] Therefore, as 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.

[0077] 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 come into contact with 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 area of the tool body functional part 32222 on the spatula body 3222 can have liquid resin adhered, while the tool body main area 32221, which occupies most of the area, will not have liquid resin adhered, making the subsequent cleaning of the spatula body 3222 much simpler.

[0078] 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 operation. The linear grooves arranged along the Y-axis direction can form a liquid receiving function for liquid resin, thereby realizing the drainage function of liquid resin, so that the liquid resin can flow in the Y-axis direction in the liquid receiving groove 322221, rather than flowing to the tool body main area 32221 along the X-axis direction. Therefore, the liquid resin flowing in the Y-axis direction in the liquid receiving groove 322221 can fall by gravity to the side edge of the spatula body 3222 and fall back into the liquid tray 2100.

[0079] 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 barrier 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.

[0080] 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 inclined toward the molding table 2200 along the X-axis direction, rather than being opened on the upper functional surface 32222a and then making the groove opening of the liquid receiving groove 322221 inclined toward the Z-axis direction. This inclined design of the groove opening can make the groove opening of the liquid receiving groove 322221 substantially inclined toward the liquid resin along the X-axis direction during the process of the spatula body 3222 scraping the mold part, and smoothly receive the liquid resin, thereby improving the drainage function of the liquid resin.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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, several modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A blade assembly comprising: The shoveling assembly comprises: an assembly seat body; a shoveling body assembled to the assembly seat body, the shoveling body comprising a connected body main area part and a body function part, wherein the shoveling body is configured to have a body transverse direction and a body longitudinal direction perpendicular to each other, the body main area part and the body function part are arranged along the body longitudinal direction, and the area of the body main area part is larger than the area of the body function part; wherein the body function part has an upper function surface and a lower function surface facing each other, at least one of the upper function surface and the lower function surface is provided with a liquid drainage structure, and the liquid drainage structure is configured to guide the flow of liquid printing material out of the body main area part.

2. The blade assembly of claim 1, wherein, The liquid drainage structure comprises: at least one liquid receiving groove opened on the upper function surface of the body function part, the liquid receiving groove is configured as a linear groove, and each liquid receiving groove is arranged on the upper function surface of the body function part along the body transverse direction of the shoveling body; and / or at least one liquid blocking protrusion arranged on the lower function surface of the body function part, the liquid blocking protrusion is configured as a linear protrusion, and each liquid blocking protrusion is arranged on the lower function surface of the body function part along the body transverse direction of the shoveling body.

3. The blade assembly of claim 2, wherein, The liquid receiving groove is configured to define a virtual longitudinal line, and the groove depth of the liquid receiving groove is configured to be opened along the virtual longitudinal line, wherein the virtual longitudinal line has an inclined angle relative to the upper function surface of the body function part, and the virtual longitudinal line is arranged along the body longitudinal direction of the shoveling body.

4. The blade assembly of claim 2, wherein, The lower function surface of the body function part is divided into at least three lower unit surfaces, and a plurality of the lower unit surfaces are arranged along the body longitudinal direction of the shoveling body, at least one liquid blocking protrusion is arranged between adjacent lower unit surfaces, wherein different lower unit surfaces have different surface inclinations.

5. The blade assembly of claim 4, wherein, The lower function surface of the body function part is divided into three lower unit surfaces, one liquid blocking protrusion is arranged between adjacent lower unit surfaces, and adjacent lower unit surfaces are separated based on the one liquid blocking protrusion therebetween, wherein the surface inclination of one lower unit surface located in the middle of the three lower unit surfaces is smaller than the surface inclinations of the other two lower unit surfaces.

6. The blade assembly of claim 1, wherein, The shoveling body is elastically movably assembled to the assembly seat body.

7. The blade assembly of claim 6, wherein, The shoveling assembly comprises: a shoveling adapter platform movably assembled to the assembly seat body, and the shoveling body is assembled to the shoveling adapter platform, so that the shoveling body is indirectly movably assembled to the assembly seat body through the shoveling adapter platform.

8. A shovel module, characterized in that The shoveling module comprises: a module platform provided with a shoveling movement track; The spatula assembly of any one of claims 1-7, the spatula assembly movably assembled to the mold platform along a spatula movement track, the spatula movement track configured as a linear track, the spatula assembly configured for reciprocating movement along the spatula movement track relative to the mold platform.

9. An automatic unloading device, characterized in that, The automatic material feeding device comprises: A device base, the device base provided with a mold movement track; The spatula mold of claim 8, the spatula mold movably assembled to the device base along the mold movement track, the mold movement track configured as a linear track, the mold movement track and the spatula movement track of the spatula mold parallel to each other.

10. A 3D printing system, characterized by The 3D printing system comprises: A system base; A 3D printer, the 3D printer assembled to the system base, wherein the 3D printer comprises a machine body and a liquid material tray and a forming table assembled to the machine body, the forming table movably assembled to the machine body, the forming table configured for approaching or moving away from the liquid material tray on the machine body; The automatic material feeding device of claim 9, the automatic material feeding device assembled to the system base.

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