TWI526321B - A device with a wiper mechanism and a 3d printer - Google Patents

Description

Device with scraping mechanism and three-dimensional printer

The invention relates to a device with a scraping mechanism and a three-dimensional printer, in particular to a device with a scraping mechanism and a three-dimensional printer for facilitating scraping of residual materials.

Rapid Prototyping (RP) enables rapid 3D CAD manufacturing, test assembly of parts, and further functional testing. 3D printing is one of the rapid prototyping technologies. 3D printing is based on digital model files, using powdered metal or plastic bonding materials to build entities by layer-by-layer stacking.

Stereolithography (SLA) is one of the ways of 3D printing. A three-dimensional optical solid forming machine for manufacturing a three-dimensional object is disclosed in US Pat. No. 6,130,337,100 A1. It is also known that a household 3D printer using SLA is provided with a photosensitive resin placed on a container, and the photosensitive resin receives the corresponding wavelength of light to form a solidified molding, and the remaining photosensitive resin cannot be reused, and the residual material needs to be removed. If the manual method is used, the container is removed and the residue is poured off. Since the photosensitive resin is toxic to the human body, if it irritates the skin, it may be in the process of removing the residual material. Can hurt the health of the user.

Accordingly, it is an object of the present invention to provide a device having a scraping mechanism and a three-dimensional printer capable of automatically removing residual materials.

Accordingly, a preferred embodiment of the present invention has a scraping mechanism comprising: a housing and a scraping mechanism.

The housing includes a housing defining an access opening, the housing further includes an upper cover that snugly covers the access opening, the housing and the upper cover together define an interior space, the upper cover being opposite The housing moves between a closed position and an open position.

The scraping mechanism is disposed in the inner space and includes a telescopic group, a receiving container, and a scraper. The telescopic group is connected to the upper cover and is driven to expand and contract when the upper cover moves between the closed position and the open cover position. The container has a substrate extending from a first direction, a dump portion formed on one side of the substrate and communicating with the outside, and an upper opening opposite to the substrate. The scraper is disposed on the substrate and extends transversely to the first direction, and is coupled to the telescopic group and is moved by the telescopic group in the first direction. Wherein, in the closed position, the scraper is located on the substrate and opposite to the side of the dumping portion, and the scraper is located at the dumping portion.

Therefore, the three-dimensional printer of the preferred embodiment of the present invention comprises: a casing, a scraping mechanism, a laser mechanism, a scanning mechanism, and a molding platform.

The housing includes a housing defining an access opening, the housing The housing further includes an upper cover that snugly engages the access opening, the housing and the upper cover collectively defining an interior space, the upper cover being movable relative to the housing between a closed position and an open position.

The scraping mechanism is disposed in the inner space and includes a telescopic group, a receiving container, and a scraper. The telescopic group is connected to the upper cover and is driven to expand and contract when the upper cover moves between the closed position and the open cover position. The container has a substrate extending from a first direction, a dump portion formed on one side of the substrate and communicating with the outside, and an upper opening opposite to the substrate. The scraper is disposed on the substrate and extends transversely to the first direction, and is coupled to the telescopic group and is moved by the telescopic group in the first direction. Wherein, in the closed position, the scraper is located on the substrate and opposite to the side of the dumping portion, and the scraper is located at the dumping portion.

The laser mechanism is disposed in the interior space and below the container for emitting a laser beam. The scanning mechanism is disposed in the interior space and below the containment vessel to reflect the laser beam to the containment vessel. The molding platform is disposed in the inner space and above the substrate, and can extend through the upper opening to move up and down relative to the container.

Preferably, the dumping portion has a guiding convex portion protruding from a lower surface of the substrate, and a communicating tube extending from the guiding convex portion and communicating with the outside.

Preferably, the guiding protrusion extends obliquely away from an end of the connecting tube toward the lower surface of the substrate toward the end adjacent to the connecting tube.

Preferably, the dumping portion further has a sleeve disposed on an inner surface of the connecting tube.

Preferably, the upper cover has an L-shaped plate, and a linkage plate connecting the L-shaped plate, the telescopic group has two telescopic members connecting opposite sides of the linkage plate, and each of the telescopic members has a connection with the scraper a cylinder, and a rod that is telescopically displaceable relative to the cylinder and connected to the linkage plate.

Preferably, the container further has two side plates extending upward from the substrate and extending along the first direction, and a first connecting plate and a second connecting plate respectively connecting the side plates. The dumping portion is adjacent to the second connecting plate, and each of the side plates forms a sliding slot, each of the sliding slots has a first end adjacent to the first connecting plate, and a second end adjacent to the second connecting plate; the scraper The utility model comprises an operation portion which is disposed on the sliding grooves and the cylinders, and a blade which is connected to the operation portion and is slidably disposed on the substrate.

Preferably, the three-dimensional printer further comprises a frame disposed in the inner space and supporting the container.

The effect of the present invention is that the upper cover is displaced from the closed position to the open cover position relative to the housing, and the blade that interlocks the scraper is moved by the second connecting plate in the first direction to the first connecting plate, and The remaining photosensitive resin is sequentially concentrated to the dumping portion and the waste box, which reduces the user's cleaning of the containing container, and can automatically remove the residual material, which is quite convenient.

1‧‧‧Shell

11‧‧‧Shell

111‧‧‧ access port

12‧‧‧Upper cover

121‧‧‧L-shaped board

122‧‧‧ linkage board

13‧‧‧Internal space

2‧‧‧Scraping mechanism

21‧‧‧Flexing group

211‧‧‧Flexible parts

212‧‧‧Cylinder block

213‧‧‧ rod body

22‧‧‧Container container

221‧‧‧Substrate

222‧‧‧Dumping Department

223‧‧‧ side panels

224‧‧‧First connecting plate

225‧‧‧Second connection plate

226‧‧‧Opening

227‧‧ ‧ chute

228‧‧‧ first end

229‧‧‧ second end

231‧‧‧Guided convex

232‧‧‧Connected pipe

233‧‧‧ casing

24‧‧‧ scrap box

25‧‧‧Scraper

251‧‧‧Operation Department

252‧‧‧blade

3‧‧‧Rack

4‧‧‧ Laser agency

41‧‧‧Laser light source

42‧‧‧Mobile Module

5‧‧‧Scanning agency

6‧‧‧Molding mechanism

61‧‧‧Forming arm

62‧‧‧Molding platform

8‧‧‧ entity

9‧‧‧Photosensitive resin

D1‧‧‧ first direction

Other features and advantages of the embodiments of the present invention will be apparent from the detailed description of the preferred embodiments of the accompanying drawings in which: FIG. 1 is a perspective view illustrating a preferred embodiment of the three-dimensional printer of the present invention. 2 is a perspective exploded view corresponding to FIG. 1; FIG. 3 is a perspective view showing a container; FIG. 4 is a top view showing the container; FIG. 5 is a line 5 along FIG. -5 is a cross-sectional view taken; and FIG. 6 to FIG. 10 are schematic views of the operation mode of the three-dimensional printer, wherein FIG. 7, FIG. 8 and FIG. 10 hide a part of the casing, and FIG. 6 and FIG. Layered stacked entities and the photosensitive resin.

The following description of the preferred embodiments is provided to illustrate the specific embodiments of the invention. The directional terms mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", etc., are merely directions referring to the additional drawings. Therefore, the directional terminology used is for the purpose of illustration and not limitation.

Referring to FIG. 1 , FIG. 2 and FIG. 6 , a preferred embodiment of the three-dimensional printer of the present invention is suitable for manufacturing a photosensitive resin 9 into a layered body 8 and comprising: a casing 1 and a scraping mechanism 2 A frame 3, a laser mechanism 4, a scanning mechanism 5, and a molding mechanism 6.

The housing 1 includes a housing 11 defining an access opening 111. The housing 1 further includes an upper cover 12 that can snugly cover the access opening 111. The housing 11 is shared with the upper cover 12 An internal space 13 is defined. The upper cover 12 has an L-shaped plate 121 and a linking plate 122 that is connected to the L-shaped plate 121 and has an inverted U shape.

The scraping mechanism 2 is disposed in the inner space 13 and includes a The telescoping group 21, a container 22, a waste box 24, and a scraper 25. The telescopic group 21 has two telescopic members 211 connected to opposite sides of the linking plate 122. Each of the telescopic members 211 has a cylinder 212 connected to the scraper 25, and a rod body 213 that is telescopically displaceable relative to the cylinder 212 and connected to the linkage plate 122. In this embodiment, each of the telescopic members 211 is a pneumatic cylinder, but not limited thereto, and may be a hydraulic cylinder.

Referring to FIG. 2 to FIG. 5, the container 22 has a square box for holding the photosensitive resin 9 (see FIG. 6), and has a substrate 221 extending from a first direction D1, and a substrate 221 formed thereon. a dumping portion 222 on one side and communicating with the outside, two side plates 223 extending upward from the substrate 221 and extending in the first direction D1, and a first connecting plate 224 and a connecting body respectively connected to the side plates 223 The second connecting plate 225, and an upper opening 226 opposite to the substrate 221. The dumping portion 222 is adjacent to the second connecting plate 225. Each of the side plates 223 defines a sliding slot 227. Each of the sliding slots 227 has a first end 228 adjacent to the first connecting plate 224 and a second end 229 adjacent to the second connecting plate 225.

In detail, the pouring portion 222 has a guiding protrusion 231 protruding from the lower surface of the substrate 221, a connecting tube 232 extending from the guiding protrusion 231 and communicating with the outside, and a set A sleeve 233 is provided on the inner surface of the communication tube 232. The guiding protrusion 231 extends obliquely away from the end of the connecting tube 232 toward the lower surface of the substrate 221 from the end away from the connecting tube 232. In this embodiment, the sleeve 233 is a plastic sleeve. Of course, the sleeve 233 can be omitted. Further, the connecting tube 232 is straight tubular, but not limited thereto. The connecting tube 232 can also be used. It is funnel shaped. The waste box 24 is disposed below the communication tube 232.

The squeegee 25 extends through the upper opening 226 and is disposed on the substrate 221 transversely to the first direction D1, and includes an operating portion 251 disposed through the sliding slots 227 and the cylinders 212, and a connecting portion The operation unit 251 is slidably disposed on the blade 252 of the substrate 221.

Referring to Figures 2 and 6, the frame 3 is disposed in the interior space 13 and supports the containment vessel 22. The laser mechanism 4 is disposed in the inner space 13 and below the receiving container 22. The laser mechanism 4 includes a laser light source 41 for emitting a laser beam, and two laser light sources are respectively adjusted. The movement module 42 of the path of 41. The scanning mechanism 5 is disposed in the internal space 13 and directly below the receiving container 22, and reflects the laser beam to the holding container 22. The molding mechanism 6 is disposed in the inner space 13 and includes a molding arm 61 fixed to the frame 3, and a movable arm 61 movable up and down relative to the molding arm 61 and located above the substrate 221, and extending through the upper opening 226 Forming platform 62.

The operation of the three-dimensional printer will be described below.

It should be noted that FIGS. 6 to 10 are schematic views of the operation mode of the three-dimensional printer. 7 , 8 and 10 hide part of the housing 11 , and FIGS. 6 and 9 schematically depict the layered stacked body 8 and the photosensitive resin 9 .

Referring to FIG. 2, FIG. 6, and FIG. 7, first, the upper cover 12 is in a closed position relative to the housing 11. The end of the cylinder 212 is located at the first end 228 of the sliding slot 227, and the scraper 25 is in contact with the first A connecting plate 224. The contents container 22 is placed in the photosensitive resin 9. The forming platform 62 first descends and extends over the upper portion The opening 226 extends into the container 22 and emits a laser beam through the laser source 41 of the laser mechanism 4. The moving modules 42 respectively adjust the path of the laser source 41. The scanning mechanism 5 The laser beam is reflected to the containment vessel 22 such that a portion of the photosensitive resin 9 receives the corresponding wavelength of light for curing to form an entity of one of the layers. Then, the forming platform 62 is raised again, so that the laser mechanism 4 adjusts the path of the laser beam, and the scanning beam 5 reflects the laser beam to the container 22, so that part of the photosensitive resin 9 receives the corresponding wavelength of light. Curing to form an entity that completes one of the layers. The above-described manner is repeated in such a manner as to reach the desired layered stacked body 8, which is raised adjacent to the access opening 111 (see Figure 9). On the other hand, the photosensitive resin 9 remaining in the container 22 is a residue, which cannot be reused and needs to be removed.

Referring to FIGS. 6-10, when the user wants to open the upper cover 12, the entity 8 is taken out by the access opening 111. At this time, the upper cover 12 is displaced relative to the housing 11 by the closed position shown in FIG. 6 and FIG. 7 to a cover position as shown in FIG. 9 and FIG. 10, and the linkage plate 122 is driven by the telescopic group 21. The rods 213 are respectively extended from the cylinders 212. The blade 25 is driven by the telescopic group 21, and the operating portion 251 is moved from the first end 228 of the sliding slot 227 in the first direction D1 to the second end 229, and the blade 252 is configured by the first connecting plate. The 224 is moved to the second connecting plate 225 along the first direction D1, and the remaining photosensitive resin 9 is first concentrated to the guiding convex portion 231 of the pouring portion 222 because the guiding convex portion 231 is adjacent to the guiding portion 231. The communication tube 232 is inclined downward so that the remaining photosensitive resin 9 can be quickly flowed to the sleeve 233 (see Fig. 5) and finally concentrated to the waste container 24. The waste box 24 can be provided with a bag (not shown), and the bag is collected to fill the remaining photosensitive resin. 9. The remaining photosensitive resin 9 can be recovered by pulling out the bag.

When the user takes out the entity 8 from the access port 111. At this time, the upper cover 12 is displaced from the open position shown in FIG. 9 and FIG. 10 to the closed position as shown in FIG. 6 and FIG. 7, and the linkage plate 122 is coupled to the telescopic group 21 to drive the rods. The body 213 retracts the cylinders 212 respectively, so that the scraper 25 is driven by the telescopic group 21, and the operating portion 251 is moved from the second end 229 of the chute 227 to the first direction D1 opposite to the first direction D1. The end 228 is simultaneously moved by the second connecting plate 225 to the first connecting plate 224 opposite to the first direction D1.

The first cover 12 is displaced relative to the housing 11 by the closed position as shown in FIGS. 6 and 7 to the open position as shown in FIGS. 9 and 10, and the blade 252 of the scraper 25 is interlocked by the first The connecting plate 224 is moved to the second connecting plate 225 along the first direction D1, and the remaining photosensitive resin 9 is sequentially concentrated to the pouring portion 222 and the waste box 24, thereby reducing the user cleaning the containing container 22. , and can automatically remove the residual material, which is quite convenient. Moreover, the scraping mechanism 2 does not need to be equipped with a motor and a sensor, and can automatically remove the residual material only through the mechanism design, thereby saving the cost of the motor and the inductor.

The outer casing 1 and the scraping mechanism 2 described above are combined to form a device having a scraping mechanism.

In summary, the upper cover 12 is displaced from the closed position to the open cover position relative to the housing 11, and the blade 252 that interlocks the scraper 25 is moved by the first connecting plate 224 along the first direction D1 to the first The two connecting plates 225 are arranged, and the remaining photosensitive resin 9 is sequentially concentrated to the dumping portion 222 and the waste box 24, thereby reducing the user's cleaning of the containing container 22, and automatically clearing In addition to the residual material, it is quite convenient, so the object of the present invention can be achieved.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent changes and modifications made by the patent application scope and patent specification content of the present invention, All remain within the scope of the invention patent.

11‧‧‧Shell

111‧‧‧ access port

12‧‧‧Upper cover

122‧‧‧ linkage board

21‧‧‧Flexing group

212‧‧‧Cylinder block

213‧‧‧ rod body

225‧‧‧Second connection plate

227‧‧ ‧ chute

229‧‧‧ second end

232‧‧‧Connected pipe

233‧‧‧ casing

24‧‧‧ scrap box

8‧‧‧ entity

9‧‧‧Photosensitive resin

D1‧‧‧ first direction

Claims (14)

A device having a scraping mechanism, comprising: a casing, comprising a casing, the casing defining an access opening, the casing further comprising an upper cover removably covering the access opening, the casing and the casing The upper cover collectively defines an inner space, the upper cover is movable relative to the housing between a closed position and an open position; and a scraping mechanism is disposed in the inner space and includes a telescopic group connected to the upper cover, and Driven and telescoped when the upper cover moves between the closed position and the open cover position, a receiving container has a substrate extending from a first direction, a dumping material formed on one side of the substrate and communicating with the outside And an upper opening opposite to the substrate, and a scraper blade extending through the upper opening and disposed transversely to the first direction on the substrate, and connecting the telescopic group, the telescopic group being driven along the first direction Moving, wherein in the closed position, the scraper is located on the substrate and opposite to the side of the dumping portion, and the scraper is located at the dumping portion. A device having a scraping mechanism according to claim 1, wherein the pouring portion has a guiding convex portion protruding from a lower surface of the substrate, and a guiding portion extending from the guiding convex portion and communicating with the outside Connecting pipe. A device having a scraping mechanism according to claim 2, wherein the guiding protrusion extends obliquely away from an end of the connecting tube toward an end portion adjacent to the connecting tube from the lower surface of the substrate. A device having a scraping mechanism according to claim 2, wherein the pouring portion further has a sleeve provided on an inner surface of the communicating tube. The device of claim 1, wherein the upper cover has an L-shaped plate, and a linkage plate connecting the L-shaped plate, the expansion and contraction group having two telescopic members connecting opposite sides of the linkage plate, Each of the telescopic members has a cylinder connected to the scraper, and a rod body that is telescopically displaceable relative to the cylinder and connected to the linkage plate. The apparatus of claim 5, wherein the container further has two side plates spaced upward from the substrate and extending along the first direction, and a first connection respectively connecting the side plates And a second connecting plate, the pouring portion is adjacent to the second connecting plate, and each of the side plates forms a sliding slot, each of the sliding slots has a first end adjacent to the first connecting plate, and a adjacent second a second end of the connecting plate; the scraping blade includes an operating portion disposed on the sliding slots and the cylinders, and a blade connected to the operating portion and slidably disposed on the substrate. A device having a scraping mechanism according to claim 1, further comprising a frame disposed in the inner space and supporting the receiving container. A three-dimensional printer includes: a casing including a casing, the casing defining an access opening, the casing further comprising an upper cover that can snugly cover the access opening, the casing being common with the upper cover Defining an internal space, the upper cover is movable relative to the housing between a closed position and an open position; a scraping mechanism is disposed in the inner space and includes a telescopic group connected to the upper cover and received by the upper cover Close this Driving and telescopically moving between the position and the opening position, a receiving container having a substrate extending from a first direction, a dumping portion formed on one side of the substrate and communicating with the outside, and a reverse An upper opening of the substrate, and a scraper blade extending through the upper opening and disposed on the substrate transversely to the first direction, and connected to the telescopic group, and being moved by the telescopic group in the first direction, wherein a closed position, the scraper is located on the substrate and opposite to the side of the dumping portion, in the open cover position, the scraper is located at the dumping portion; a laser mechanism is disposed in the inner space and located in the receiving container a laser beam for emitting a laser beam; a scanning mechanism disposed in the inner space and located below the container, reflecting the laser beam to the container; and a molding platform disposed in the inner space And located above the substrate, and can extend through the upper opening to move up and down relative to the container. The three-dimensional printer according to claim 8, wherein the pouring portion has a guiding convex portion protruding from a lower surface of the substrate, and a communication extending from the guiding convex portion and communicating with the outside tube. The three-dimensional printer according to claim 9, wherein the guiding protrusion extends obliquely away from an end of the connecting tube toward the lower surface of the substrate toward an end adjacent to the connecting tube. The three-dimensional printer according to claim 9, wherein the dumping portion further has a sleeve disposed on an inner surface of the communicating tube. The three-dimensional printer of claim 8, wherein the upper cover has an L-shaped plate, and a linking plate connecting the L-shaped plate, the telescopic group has two telescopic members connecting opposite sides of the linking plate, each of the The telescopic member has a cylinder connected to the scraper, and a rod body that is telescopically displaceable relative to the cylinder and connected to the linkage plate. The three-dimensional printer of claim 12, wherein the container further has two side plates spaced upward from the substrate and extending along the first direction, and a first connecting plate respectively connecting the side plates and a second connecting plate, the pouring portion is adjacent to the second connecting plate, each of the side plates forming a sliding slot, each of the sliding slots has a first end adjacent to the first connecting plate, and a adjacent second connecting plate The second end; the scraper includes an operating portion disposed on the sliding slots and the cylinders, and a blade connected to the operating portion and slidably disposed on the substrate. The three-dimensional printer according to claim 8, further comprising a frame disposed in the inner space and supporting the container.