Collecting assembly, spray head device and three-dimensional printer

Abstract

The utility model belongs to the technical field of three-dimensional printing, and provides a collecting assembly, a spray head device and a three-dimensional printer. The collecting assembly is applied to the three-dimensional printer and comprises a mounting base and a scraper, a mounting groove is formed in the mounting base, the scraper comprises an elastic part and a scraper blade connected with the elastic part, and at least part of the elastic part is located in the mounting groove and elastically abuts against the side wall of the mounting groove; the scraper blade is at least partially located in the mounting groove. The scraper in the collecting assembly provided by the utility model is relatively simple to mount and dismount.

Description

Technical Field

[0001] The present application relates to the field of three-dimensional printing technology, and in particular to a collection component, a nozzle device and a three-dimensional printer. Background Art

[0002] Three-dimensional printing technology, also known as additive manufacturing technology, is a technology that manufactures solid parts by adding materials layer by layer.

[0003] 3D printers can be fused deposition modeling (FDM) 3D printers, stereolithography (SLI) 3D printers, laser sintering (LS) 3D printers, and other technologies. During SLI 3D printing, a leveling roller is used to remove excess printing material from the nozzle, and a scraper is then used to remove the printed material from the leveling roller. The scraper can be attached to the side of the leveling roller using fasteners to facilitate removal of printed material.

[0004] In the related art, the installation and removal process of the scraper is relatively complicated. Utility Model Content

[0005] The present application provides a collection component, a nozzle device and a three-dimensional printer. The installation and disassembly process of the scraper in the collection component is relatively simple.

[0006] The present application provides a collection component, which is applied to a three-dimensional printer. The collection component includes a mounting seat and a scraper. A mounting groove is provided in the mounting seat. The scraper includes an elastic part and a scraper blade connected to the elastic part. The elastic part is at least partially located in the mounting groove and elastically abuts against the side wall of the mounting groove; the scraper blade is at least partially located outside the mounting groove.

[0007] In one possible embodiment, the collection assembly provided in the present application is applied to a nozzle device, and the nozzle device also includes a leveling assembly, the notch of the mounting groove faces the leveling assembly, the scraper blade corresponds to the leveling assembly, and the scraper blade is used to abut against the outer surface of the leveling assembly to remove material on the leveling assembly.

[0008] In one possible embodiment, the collecting assembly provided by the present application comprises an elastic portion comprising a first elastic sheet, a second elastic sheet, and a connecting portion, wherein the first elastic sheet and the second elastic sheet are connected to opposite sides of the connecting portion, and one of the first elastic sheet and the second elastic sheet is connected to a scraper blade.

[0009] The mounting groove includes a first side wall and a second side wall. Under the action of the rebound force after the connecting portion is bent, the first elastic piece abuts against the first side wall, and the second elastic piece abuts against the second side wall.

[0010] In a possible embodiment, in the collection assembly provided by the present application, the scraper blade and the elastic part are integrally formed; or, the scraper is made of plastic.

[0011] In a possible embodiment, the collection assembly provided by the present application, the mounting groove further includes a bottom wall, the first side wall and the second side wall are connected to both sides of the bottom wall, and the connecting portion abuts against the bottom wall;

[0012] A first discharge hole is provided on the connecting portion, a second discharge hole is provided on the bottom wall, and the first discharge hole is aligned with the second discharge hole; or,

[0013] The mounting base also includes a bottom plate and side plates arranged on both sides of the bottom plate. The second discharge hole is arranged on the side plate. The distance between the side of the second discharge hole close to the bottom plate and the bottom plate is less than two-thirds of the depth of the mounting groove.

[0014] In a possible embodiment, the collecting assembly provided in the present application further has a discharge channel in the mounting seat, and the discharge channel is connected to the second discharge hole;

[0015] The collecting assembly also includes a suction piece, which is connected to the mounting seat so that the suction assembly is communicated with the discharge channel, and the suction piece is used to suck out the material in the discharge channel.

[0016] The present application also provides a nozzle device, including a nozzle assembly, a leveling assembly and the above-mentioned collecting assembly. The nozzle assembly, the leveling assembly and the collecting assembly are arranged in sequence along a first direction. The nozzle assembly is used to spray printing material, the leveling assembly is used to adhere excess printing material, and the collecting assembly clears the printing material on the leveling assembly.

[0017] In a possible embodiment, the nozzle device provided in the present application, the leveling assembly includes a leveling roller and a second driving member, the scraper blade abuts against the outer surface of the leveling roller, and the second driving member drives the leveling roller to rotate.

[0018] In a possible embodiment, in the nozzle device provided by the present application, the leveling roller comprises a metal material.

[0019] The present application also provides a three-dimensional printer, comprising a printing platform, the above-mentioned collecting component or the above-mentioned nozzle device, wherein the collecting component or the nozzle device can be moved on the printing platform.

[0020] The present application provides a collection assembly comprising a mounting base and a scraper. The mounting base defines a mounting slot. The scraper comprises an elastic portion and a scraper blade connected to the elastic portion. The elastic portion is positioned within the mounting slot and elastically abuts against the sidewalls of the mounting slot. The scraper blade extends from the mounting slot to abut against the outer surface of the leveling assembly. Thus, by providing the mounting slot, positioning the elastic portion of the scraper within the slot, and elastically abutting against the sidewalls of the slot, the scraper can be secured within the slot. The scraper can also be removed without the need for additional tools, making installation and removal of the scraper relatively simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] Figure 1 A schematic diagram of the structure of a 3D printer provided in an embodiment of the present application;

[0023] Figure 2 A schematic structural diagram of a nozzle device provided in an embodiment of the present application;

[0024] Figure 3 Schematic diagram of the internal structure of the nozzle device provided in the embodiment of the present application Figure 1 ;

[0025] Figure 4 Schematic diagram of the explosion of the collecting assembly in the nozzle device provided in the embodiment of the present application Figure 1 ;

[0026] Figure 5 Schematic diagram of the internal structure of the nozzle device provided in the embodiment of the present application Figure 2 ;

[0027] Figure 6a Schematic diagram of the explosion of the collecting assembly in the nozzle device provided in the embodiment of the present application Figure 2 ;

[0028] Figure 6b Schematic diagram of the explosion of the collecting assembly in the nozzle device provided in the embodiment of the present application Figure 3 ;

[0029] Figure 7 A schematic diagram of the structure of the scraper provided in an embodiment of the present application before bending;

[0030] Figure 8 This is a schematic structural diagram of the leveling assembly in the nozzle device provided in an embodiment of the present application.

[0031] Description of reference numerals:

[0032] 10-3D printer;

[0033] 100-printing platform;

[0034] 200-Sprinkler device;

[0035] 210-leveling assembly;

[0036] 220-collection components;

[0037] 211-leveling roller; 2111-mounting hole;

[0038] 212-second driving member; 2121-rotating shaft;

[0039] 221-mounting seat; 2211-mounting slot; 2211a-first side wall; 2211b-second side wall; 2211c-bottom wall; 2211d-second discharge hole; 2212-discharge channel; 2213-bottom plate; 2214-side plate;

[0040] 222-scraper; 2221-elastic portion; 2221a-first elastic sheet; 2221b-second elastic sheet; 2221c-connecting portion; 2221d-first discharge hole;

[0041] 2222-scraper blade;

[0042] 230- nozzle assembly;

[0043] 240-Suction piece;

[0044] 250-first driving member;

[0045] 260-mounting frame;

[0046] X-first direction;

[0047] Y-rotation direction. DETAILED DESCRIPTION

[0048] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0049] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to a fixed connection, an indirect connection via an intermediate medium, internal communication between two components, or an interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0050] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0051] The terms "first," "second," and "third" (if any) in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the application described herein can, for example, be implemented in orders other than those illustrated or described herein.

[0052] In addition, the terms "comprises" and "having" and any variations thereof are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or service tool that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, product or service tool.

[0053] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. The following embodiments and features in the embodiments may be combined with each other unless there is any conflict.

[0054] Three-dimensional printing technology, also known as additive manufacturing technology, is a technology that manufactures solid parts by adding materials layer by layer.

[0055] 3D printers can be fused deposition modeling 3D printers, stereolithography 3D printers, laser sintering 3D printers, etc. In some stereolithography 3D printers, a nozzle sprays liquid printing material onto a printing platform, and then uses ultraviolet light to irradiate the liquid printing material, solidifying it layer by layer.

[0056] During stereolithography 3D printing, a leveling roller is used to remove excess material from the printhead. A scraper is then used to remove the material from the leveling roller. The scraper can be attached to the side of the leveling roller using fasteners to facilitate the removal of material from the roller. The scraper wears over time and therefore requires regular replacement.

[0057] In the related art, the scraper is fixed with screws and a pressure plate. When installing the scraper, it is necessary to first press the pressure plate onto the scraper and then tighten the screw with a tool. When removing the scraper, the screw must be loosened and removed with a tool before removing the pressure plate. This makes the scraper installation and removal process relatively complicated.

[0058] Based on this, the present application provides a collection component, a nozzle device and a three-dimensional printer, and the installation and disassembly process of the scraper in the collection component is relatively simple.

[0059] Figure 1 A schematic diagram of the structure of a 3D printer provided in an embodiment of the present application.

[0060] See also Figure 1 As shown, the three-dimensional printer 10 includes a printing platform 100 and a nozzle device 200 , and the nozzle device 200 is movable relative to the printing platform 100 .

[0061] The printing platform 100 is used to form the part to be printed, and the nozzle assembly 200 is used to spray liquid printing material onto the printing platform 100. Specifically, the nozzle assembly 200 repeatedly moves above the printing platform 100 to spray the liquid printing material layer by layer onto the printing platform 100. The 3D printer 10 also includes a curing device (not shown), which can be an ultraviolet light device. The liquid printing material is cured layer by layer under the irradiation of the ultraviolet light, thereby forming the part to be printed.

[0062] Next, the specific structure of the shower head device 200 will be described.

[0063] Figure 2 A schematic structural diagram of a nozzle device provided in an embodiment of the present application; Figure 3 Schematic diagram of the internal structure of the nozzle device provided in the embodiment of the present application Figure 1 ; Figure 4 Schematic diagram of the explosion of the collecting assembly in the nozzle device provided in the embodiment of the present application Figure 1 .in, Figure 3 The nozzle assembly 230 is omitted.

[0064] See also Figures 2 to 4 As shown, the nozzle device 200 provided in the embodiment of the present application includes a leveling component 210 and a collecting component 220, the collecting component 220 includes a mounting seat 221 and a scraper 222, a mounting groove 2211 is provided in the mounting seat 221, the scraper 222 includes an elastic portion 2221 and a scraper blade 2222 connected to the elastic portion 2221, the elastic portion 2221 is at least partially located in the mounting groove 2211 and elastically abuts against the side wall of the mounting groove 2211; the scraper blade 2222 is at least partially located outside the mounting groove 2211.

[0065] Please continue to see Figure 1 and Figure 2 As shown, the nozzle device 200 further includes a nozzle assembly 230. The nozzle assembly 230 may include a plurality of nozzles. The plurality of nozzles may spray liquid printing materials of the same color or liquid printing materials of different colors.

[0066] The nozzle device 200 further includes a mounting frame 260, on which the nozzle assembly 230, the leveling assembly 210 and the collecting assembly 220 in the nozzle device 200 are all mounted. Figure 1 and Figure 2 The mounting bracket 260 is shown in phantom in FIG.

[0067] When the nozzles in the nozzle assembly 230 spray printing material, it is difficult to control the amount of printing material with absolute precision. Therefore, the leveling assembly 210 is required to remove excess printing material. The leveling assembly 210 can be cylindrical and roll over the printing material. Excess printing material can adhere to the leveling assembly 210, thus removing the excess printing material as the leveling assembly 210 rolls.

[0068] The printing material adhered to the flattening assembly 210 can be collected by the collecting assembly 220 to remove the printing material on the flattening assembly 210 .

[0069] Specifically, the collecting assembly 220 includes a scraper 222, which abuts against the outer surface of the leveling assembly 210. As the leveling assembly 210 rolls, the scraper 222 can scrape the printed material off the outer surface of the leveling assembly 210. The scraper 222 needs to be fixed to the mounting base 221 so that the scraper 222 abuts against the outer surface of the leveling assembly 210.

[0070] In the embodiment of the present application, the mounting seat 221 is disposed near the leveling assembly 210. The mounting seat 221 is provided with a mounting slot 2211, the slot of the mounting slot 2211 facing the leveling assembly 210. The scraper 222 includes a scraper blade 2222 and an elastic portion 2221, and the elastic portion 2221 is connected to the scraper blade 2222.

[0071] The scraper blade 2222 abuts against the outer surface of the flattening assembly 210 and can be inclined relative to the outer surface of the flattening assembly 210 to facilitate scraping off the printed material on the flattening assembly 210. For example, the scraper blade 2222 can extend along the tangent direction of the outer surface of the flattening assembly 210.

[0072] The elastic part 2221 of the scraper 222 is set in the installation groove 2211. The installation groove 2211 can compress the elastic part 2221. The elastic part 2221 has a rebound force after compression. The rebound force of the elastic part 2221 is used to make the elastic part 2221 abut against the side wall of the installation groove 2211. The friction between the elastic part 2221 and the installation groove 2211 can prevent the scraper 222 from moving, thereby fixing the scraper 222.

[0073] To install the scraper 222, simply insert the elastic portion 2221 of the scraper 222 into the mounting slot 2211, eliminating the need for additional fasteners. To remove the scraper 222, simply remove it from the mounting slot 2211 by overcoming the friction between the elastic portion 2221 and the sidewalls of the mounting slot 2211, eliminating the need for tools to remove fasteners. The installation and removal of the scraper 222 is relatively simple.

[0074] The collecting assembly 220 provided in the embodiment of the present application includes a mounting seat 221 and a scraper 222. The mounting seat 221 defines a mounting slot 2211. The scraper 222 includes an elastic portion 2221 and a scraper blade 2222 connected to the elastic portion 2221. The elastic portion 2221 is positioned within the mounting slot 2211 and elastically abuts against the sidewalls of the mounting slot 2211. The scraper blade 2222 extends from the mounting slot 2211 to abut against the outer surface of the leveling assembly 210. Thus, by providing the mounting slot 2211, positioning the elastic portion 2221 of the scraper 222 within the mounting slot 2211, and elastically abutting against the sidewalls of the mounting slot 2211, the scraper 222 can be secured within the mounting slot 2211. No additional tools are required to remove the scraper 222, making installation and removal of the scraper 222 relatively simple.

[0075] Please continue to see Figure 3 and Figure 4 As shown, in one possible embodiment, the elastic portion 2221 may be a sheet-like member with high elasticity, and the thickness of the elastic portion 2221 is greater than the width of the mounting groove 2211. During the installation of the elastic portion 2221 in the mounting groove 2211, the sidewall of the mounting groove 2211 squeezes the elastic portion 2221, causing the elastic portion 2221 to be compressed. After compression, the elastic portion 2221 has a rebound force, which allows the elastic portion 2221 to elastically abut against the sidewall of the mounting groove 2211.

[0076] Figure 5 Schematic diagram of the internal structure of the nozzle device provided in the embodiment of the present application Figure 2 ; Figure 6a Schematic diagram of the explosion of the collecting assembly in the nozzle device provided in the embodiment of the present application Figure 2 ; Figure 6b Schematic diagram of the explosion of the collecting assembly in the nozzle device provided in the embodiment of the present application Figure 3 ; Figure 7 This is a schematic diagram of the structure of the scraper provided in an embodiment of the present application before bending.

[0077] See also Figures 5 to 7As shown, in another possible embodiment, the elastic portion 2221 includes a first elastic sheet 2221a, a second elastic sheet 2221b and a connecting portion 2221c, the first elastic sheet 2221a and the second elastic sheet 2221b are connected on opposite sides of the connecting portion 2221c, and one of the first elastic sheet 2221a and the second elastic sheet 2221b is connected to the scraper blade 2222; the mounting groove 2211 includes a first side wall 2211a and a second side wall 2211b, and under the action of the rebound force after the connecting portion 2221c is bent, the first elastic sheet 2221a abuts against the first side wall 2211a, and the second elastic sheet 2221b abuts against the second side wall 2211b.

[0078] Please continue to see Figure 7 As shown, the first elastic piece 2221a, the connecting portion 2221c and the second elastic piece 2221b can be a whole piece of sheet. The scraper blade 2222 can be connected to one side of the first elastic piece 2221a or the second elastic piece 2221b. Figures 5 to 7 In the illustrated embodiment, the scraper blade 2222 is connected to one side of the first elastic piece 2221 a.

[0079] The second elastic piece 2221b is bent relative to the first elastic piece 2221a at the connection portion 2221c to the position shown in Figure 6. Then, the first elastic piece 2221a is positioned toward the first side wall 2211a, and the second elastic piece 2221b is positioned toward the second side wall 2211b, and the elastic portion 2221 is inserted into the mounting groove 2211. Due to the bending at the connection portion 2221c, the first elastic piece 2221a and the second elastic piece 2221b tend to move away from each other. This tendency causes the first elastic piece 2221a to abut against the first side wall 2211a, and the second elastic piece 2221b to abut against the second side wall 2211b. The friction between the first elastic piece 2221a and the first side wall 2211a, and the friction between the second elastic piece 2221b and the second side wall 2211b, prevents the scraper 222 from moving, thereby securing the scraper 222.

[0080] Such a setting can make the weight of the elastic part 2221 lighter, which is conducive to the fixation of the scraper 222. In addition, when the elastic part 2221 is a sheet-like piece with high elasticity, it is necessary to set the difference between the thickness of the elastic part 2221 and the width of the mounting groove 2211 according to the magnitude of the friction force required to fix the scraper 222. When the thickness of the elastic part 2221 is large, the scraper 222 needs to overcome a large friction force when installing and disassembling. When the thickness of the elastic part 2221 is small, the fixation of the scraper 222 is unreliable. Therefore, the dimensional accuracy requirements for the thickness of the elastic part 2221 are high, and the high dimensional accuracy requirements will increase the processing cost of the elastic part 2221. And in Figures 5 to 7In the illustrated embodiment, only the connecting portion 2221 c needs to be bent, and the dimensional accuracy requirement for the thickness of the elastic portion 2221 is relatively low, which can reduce the processing cost of the elastic portion 2221 .

[0081] In a possible implementation, the scraper blade 2222 and the elastic portion 2221 are integrally formed.

[0082] In other words, the scraper 222 is a single piece, and the position of the connecting portion 2221c is determined based on the length of the scraper blade 2222 that needs to extend out of the mounting slot 2211, and the connecting portion 2221c is bent. The scraper 222 is a single piece, which eliminates the need for a connector between the scraper blade 2222 and the elastic portion 2221, further simplifying the structure of the scraper 222 and reducing the processing cost of the scraper 222.

[0083] The scraper 222 is made of plastic. Plastic has good toughness, making it easy to bend and corrosion-resistant, thus preventing the scraper from being corroded by the printing material. Furthermore, the use of plastic reduces damage to the leveling assembly 210 caused by the scraper 222. It is understood that the scraper 222 can also be made of a resilient and corrosion-resistant metal.

[0084] For example, the scraper 222 can be made of polyethylene terephthalate (PET) or polyformaldehyde (POM).

[0085] Please continue to see Figures 5 to 7 As shown, the mounting groove 2211 also includes a bottom wall 2211c, a first side wall 2211a and a second side wall 2211b are connected on both sides of the bottom wall 2211c, and the connecting portion 2221c is in contact with the bottom wall 2211c; a first discharge hole 2221d is provided on the connecting portion 2221c, and a second discharge hole 2211d is provided on the bottom wall 2211c, and the first discharge hole 2221d is aligned with the second discharge hole 2211d.

[0086] The printed material scraped off by the scraper blade 2222 needs to be transferred. By configuring the elastic portion 2221 as a first elastic piece 2221a, a connecting portion 2221c, and a second elastic piece 2221b, the printed material scraped off by the scraper blade 2222 flows along the first elastic piece 2221a to the connecting portion 2221c, and is discharged through the first and second discharge holes 2221d, 2211d. The first discharge hole 2221d on the connecting portion 2221c alone is sufficient to transfer the printed material. The elastic portion 2221 can transfer the printed material simultaneously with the scraper 222 being mounted on the mounting slot 2211, eliminating the need for an additional transfer channel on the scraper 222.

[0087] There can be one first discharge hole 2221d and one second discharge hole 2211d, or two or more.

[0088] Please continue to see Figure 6b As shown, in another possible embodiment, the mounting base 221 also includes a bottom plate 2213 and side plates 2214 arranged on both sides of the bottom plate 2213, and the second discharge hole 2211d is arranged on the side plate 2214, and the distance between the side of the second discharge hole 2211d close to the bottom plate 2213 and the bottom plate 2213 is less than two-thirds of the depth of the mounting groove 2211.

[0089] In this embodiment, the first discharge hole is not provided on the connecting portion 2221, and the second discharge hole 2211d is provided on the side plate 2214 (at Figure 6b (shown by dashed lines in the figure). Printing material can flow along the connecting portion 2221c to both ends of the connecting portion 2221c and then be discharged through the second discharge hole 2211d. It should be noted that the distance between the side of the second discharge hole 2211d closest to the bottom plate 2213 and the bottom plate 2213 is less than two-thirds of the depth of the mounting groove 2211, thereby preventing excessive accumulation of printing material in the connecting portion 2221c.

[0090] Please continue to see Figure 1 、 Figure 2 and Figure 5 As shown, a discharge channel 2212 is also provided in the mounting seat 221, and the discharge channel 2212 is connected to the second discharge hole 2211d; the nozzle device 200 also includes a suction piece 240, which is arranged on the side of the discharge channel 2212 away from the second discharge hole 2211d, and the suction piece 240 is used to suck out the material in the discharge channel 2212.

[0091] The printed material discharged from the second discharge hole 2211d enters the discharge channel 2212. A suction member 240 is provided on the side of the discharge channel 2212 facing away from the second discharge hole 2211d. The suction member 240 may be a vacuum pump that sucks the printed material out of the discharge channel 2212, thereby preventing the printed material from accumulating in the discharge channel 2212.

[0092] Please continue to see Figure 1 and Figure 2 As shown, the nozzle device 200 also includes a first driving member 250, and the nozzle assembly 230, the leveling assembly 210 and the collecting assembly 220 are arranged in sequence along the first direction X. The first driving member 250 can drive the nozzle assembly 230, the leveling assembly 210 and the collecting assembly 220 to move simultaneously along the first direction X.

[0093] The first direction X represents the direction of movement of the nozzle assembly 230 on the printing platform 100. The leveling assembly 210 is positioned behind the nozzle assembly 230 along the first direction X to remove excess printing material sprayed by the nozzle assembly 230. The collection assembly 220 is positioned behind the leveling assembly 210 along the first direction X, and the scraper blade 2222 in the collection assembly 220 abuts against the leveling assembly 210 to transfer the printing material on the leveling assembly 210.

[0094] The first driving member 250 can be a driving motor, and the first driving member 250 can be connected to the mounting frame 260, so as to drive the nozzle assembly 230, the leveling assembly 210 and the collecting assembly 220 on the mounting frame 260 to move simultaneously along the first direction X, thereby allowing excess printing material to be transported in a timely manner during the printing process.

[0095] Figure 8 This is a schematic structural diagram of the leveling assembly in the nozzle device provided in an embodiment of the present application.

[0096] See also Figure 8 As shown, the leveling assembly 210 includes a leveling roller 211 and a second driving member 212 , the scraper blade 2222 abuts against the outer surface of the leveling roller 211 , and the second driving member 212 drives the leveling roller 211 to rotate.

[0097] The second driving member 212 can also be a drive motor. A mounting hole 2111 is defined at the axis of the leveling roller 211. A rotating shaft 2121 of the second driving member 212 can be inserted into the mounting hole 2111, allowing the second driving member 212 to drive the leveling roller 211 to rotate. In other words, the leveling roller 211 simultaneously moves along the first direction X and rotates about its axis along the rotation direction Y. Consequently, as the leveling roller 211 rotates, excess printing material is removed. Furthermore, as the leveling roller 211 rotates, the scraper blade 2222 scrapes the printing material off the leveling roller 211.

[0098] It should be noted that the nozzle device 200 may further include a controller, and the first driving member 250 and the second driving member 212 are both electrically connected to the controller, and the controller may control the first driving member 250 and the second driving member 212 to move synchronously. Figure 1 The rotation direction Y of the smoothing roller 211 is shown in FIG.

[0099] In one possible embodiment, the leveling roller 211 is made of a metal material. For example, the leveling roller can be made of a hard and corrosion-resistant metal material such as stainless steel. This can prevent the scraper blade 2222 from damaging the leveling roller 211. This can also prevent the printing material from corroding the leveling roller 211.

[0100] In an embodiment of the present application, a collection component 220 is also provided, which is applied to a three-dimensional printer 10. The collection component 220 includes a mounting seat 221 and a scraper 222. A mounting groove 2211 is provided in the mounting seat 221. The scraper 222 includes an elastic portion 2221 and a scraper blade 2222 connected to the elastic portion 2221. The elastic portion 2221 is at least partially located in the mounting groove 2211 and elastically abuts against the side wall of the mounting groove 2211; the scraper blade 2222 is at least partially located outside the mounting groove 2211.

[0101] Among them, the collection component 220 is applied to the nozzle device 200, and the nozzle device 200 also includes a leveling component 210. The notch of the mounting groove 2211 faces the leveling component 210, and the scraper blade 2222 corresponds to the leveling component 210. The scraper blade 2222 is used to abut against the outer surface of the leveling component 210 to remove the material on the leveling component 210.

[0102] The elastic portion 2221 includes a first elastic piece 2221a, a second elastic piece 2221b, and a connecting portion 2221c. The first elastic piece 2221a and the second elastic piece 2221b are connected to opposite sides of the connecting portion 2221c. One of the first elastic piece 2221a and the second elastic piece 2221b is connected to the scraper blade 2222.

[0103] The mounting groove 2211 includes a first side wall 2211a and a second side wall 2211b. Under the action of the rebound force of the bent connecting portion 2221c, the first elastic piece 2221a abuts against the first side wall 2211a, and the second elastic piece 2221b abuts against the second side wall 2211b.

[0104] The scraper blade 2222 and the elastic portion 2221 are integrally formed; or, the scraper 222 is made of plastic.

[0105] The mounting groove 2211 further includes a bottom wall 2211c, a first side wall 2211a and a second side wall 2211b connected to both sides of the bottom wall 2211c, and a connecting portion 2221c abuts against the bottom wall 2211c;

[0106] A first discharge hole 2221d is formed on the connecting portion 2221c, and a second discharge hole 2211d is formed on the bottom wall 2211c, and the first discharge hole 2221d is aligned with the second discharge hole 2211d; or,

[0107] The mounting seat 221 also includes a bottom plate 2213 and side plates 2214 arranged on both sides of the bottom plate 2213. The second discharge hole 2211d is arranged on the side plate 2214. The distance between the side of the second discharge hole 2211d close to the bottom plate 2213 and the bottom plate 2213 is less than two-thirds of the depth of the mounting groove 2211.

[0108] The mounting seat 221 is further provided with a discharge channel 2212, which is connected to the second discharge hole 2211d.

[0109] The collecting assembly 220 further includes a suction member 240 , which is connected to the mounting seat 221 so that the suction member 240 is in communication with the discharge channel 2212 . The suction member 240 is used to suck out the material in the discharge channel 2212 .

[0110] The present application also provides a nozzle device 200, including a nozzle assembly 230, a leveling assembly 210 and the aforementioned collecting assembly 220. The nozzle assembly 230, the leveling assembly 210 and the collecting assembly 220 are arranged in sequence along the first direction X. The nozzle assembly 230 is used to spray printing material, the leveling assembly 210 is used to adhere excess printing material, and the collecting assembly 220 clears the printing material on the leveling assembly 210.

[0111] The leveling assembly 210 includes a leveling roller 211 and a second driving member 212 . The scraper blade 2222 abuts against the outer surface of the leveling roller 211 , and the second driving member 212 drives the leveling roller 211 to rotate.

[0112] The material of the leveling roller 211 includes metal material.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A collection component, characterized in that: Applied to a 3D printer, the collection assembly includes a mounting seat and a scraper, a mounting slot is provided in the mounting seat, the scraper includes an elastic portion and a scraper blade connected to the elastic portion, the elastic portion is at least partially located in the mounting slot and elastically abuts against the side wall of the mounting slot; the scraper blade is at least partially located outside the mounting slot.

2. The collecting assembly according to claim 1, characterized in that The collecting assembly is applied to a nozzle device, which also includes a leveling assembly. The notch of the mounting groove faces the leveling assembly, and the scraper blade corresponds to the leveling assembly. The scraper blade is used to abut against the outer surface of the leveling assembly to remove material on the leveling assembly.

3. The collecting assembly according to claim 2, characterized in that The elastic portion includes a first elastic piece, a second elastic piece and a connecting portion, wherein the first elastic piece and the second elastic piece are connected to opposite sides of the connecting portion, and one of the first elastic piece and the second elastic piece is connected to the scraper blade; The mounting groove includes a first side wall and a second side wall. Under the action of the rebound force after the connecting portion is bent, the first elastic piece abuts against the first side wall, and the second elastic piece abuts against the second side wall.

4. The collecting assembly according to claim 3, characterized in that The scraper blade and the elastic portion are integrally formed; or the scraper is made of plastic.

5. The collecting assembly according to claim 3 or 4, characterized in that: The mounting groove further includes a bottom wall, the first side wall and the second side wall are connected to both sides of the bottom wall, and the connecting portion abuts against the bottom wall; A first discharge hole is formed on the connecting portion, a second discharge hole is formed on the bottom wall, and the first discharge hole is aligned with the second discharge hole; or The mounting base also includes a bottom plate and side plates arranged on both sides of the bottom plate, the second discharge hole is arranged on the side plate, and the distance between the side of the second discharge hole close to the bottom plate and the bottom plate is less than two-thirds of the depth of the mounting groove.

6. The collecting assembly according to claim 5, characterized in that The mounting seat is further provided with a discharge channel, the discharge channel being in communication with the second discharge hole; The collecting assembly further includes a suction piece connected to the mounting seat so as to communicate with the discharge channel, and the suction piece is used to suck out the material in the discharge channel.

7. A nozzle device, characterized in that: It comprises a nozzle assembly, a leveling assembly and a collecting assembly as described in any one of claims 1 to 6, wherein the nozzle assembly, the leveling assembly and the collecting assembly are arranged in sequence along a first direction, the nozzle assembly is used to spray printing material, the leveling assembly is used to adhere excess printing material, and the collecting assembly clears the printing material on the leveling assembly.

8. The nozzle device according to claim 7, characterized in that: The leveling assembly includes a leveling roller and a second driving member. The scraper blade abuts against the outer surface of the leveling roller, and the second driving member drives the leveling roller to rotate.

9. The nozzle device according to claim 8, characterized in that: The material of the leveling roller includes metal material.

10. A three-dimensional printer, characterized in that: The printing device comprises a printing platform and a nozzle device according to any one of claims 7 to 9, wherein the nozzle device is movable on the printing platform.

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