CN101850617B - Three-dimensional forming device with detachable construction tank - Google Patents

Abstract

The present invention is a three-dimensional forming device with a detachable construction tank, which is used to form a three-dimensional object, and at least comprises a detachable construction tank and a lifting device. The detachable construction tank has a tank body and a bottom plate, and the lifting device is arranged below the detachable construction tank to carry the detachable construction tank thereon and control the lifting displacement of the bottom plate during the three-dimensional object forming process. The detachable construction tank is separated from the lifting device when the three-dimensional object is formed, so as to remove powder and take out the object.

Description

Three-dimensional forming device with detachable construction tank

technical field

The invention relates to a three-dimensional forming device, especially a three-dimensional forming device with a detachable construction groove.

Background technique

Rapid prototyping technology (RP technology for short) is developed based on the concept of building a pyramid layer by layer. Its main technical feature is the rapidity of forming, and it can be molded without any tools, molds and fixtures. Automatically and quickly convert the design scheme of any complex shape into a 3D solid model, which greatly shortens the research and development cycle of new products and reduces the cost of research and development, and can ensure the time to market of new products and the first-time success rate of new product development. It provides a more complete and convenient product design communication tool between technical personnel and non-technical personnel such as enterprise decision makers and product users, thus significantly improving the competitiveness of products in the market and the relationship between enterprises and the market. Quick response ability.

At present, RP technology has developed a method of using jet printing technology combined with vehicle precision positioning technology to produce 3D solid models. The production method is to first lay a layer of powder on the top of the vehicle and use inkjet printing technology to print on part of the powder. The high-viscosity adhesive liquid makes the adhesive liquid and powder adhere and solidify, and the 3D solid model can be completed by repeating the above process layer by layer.

However, the inkjet printing equipment used in the existing RP technology does not take into account whether the residual adhesive and the sticky powder on the surface of the nozzle are scraped off when the ink is scraped off after the inkjet printing is completed, and the glue is dried out after being sealed and not moisturized. , resulting in damage to the nozzle, reducing the service life of the nozzle, and resulting in poor functionality of subsequent printing, making it impossible to continue printing to produce high-quality 3D products. In addition, when the existing RP technology is taking finished products, flying powder will always cause pollution to the working environment, and high-frequency cleaning is required to maintain normal operation. In addition, it is necessary to wait for the molding drying time after each powder spreading, which increases the overall molding time, and it must wait for several hours to dry after molding. The strength of the molded product is strong enough to be taken out, but the purpose of rapid prototyping cannot be really achieved.

Therefore, how to develop a three-dimensional forming device with detachable construction grooves that can improve the above-mentioned deficiencies in the prior art is an urgent problem to be solved.

Contents of the invention

The main purpose of the present invention is to provide a three-dimensional molding device with a detachable construction tank, so as to solve the problem that the existing technology is prone to pollute the working environment due to powder flying when taking finished products, and high-frequency cleaning is required to maintain normal operating disadvantages.

In order to achieve the above purpose, a broad implementation of the present invention is to provide a three-dimensional forming device with a detachable construction tank for forming a three-dimensional object, which at least includes a construction tank and a lifting device. The construction tank has a tank body and a bottom plate, and the lifting device is arranged under the detachable construction tank to carry the detachable construction tank on it and control the three-dimensional object during the molding process. Lifting displacement of the bottom plate. The detachable construction tank is separated from the lifting device when the three-dimensional object is formed, so as to remove powder and take out the part.

Description of drawings

FIG. 1A is a schematic diagram of a three-dimensional structure of a table-top three-dimensional forming device according to a preferred embodiment of the present invention.

FIG. 1B is a schematic partial cross-sectional view of the printing components, the powder supply tank and the build tank in FIG. 1A .

Figure 1C: It is a schematic diagram of the powder supply tank moving to the top of the construction tank for powder spreading.

FIG. 1D is a schematic structural view of the powder supply tank shown in FIG. 1A when the cover is opened.

Fig. 1E: is a partial structural schematic diagram of Fig. 1D.

Fig. 1F: It is a structural schematic diagram of the state of powder falling in the powder supply tank.

Fig. 1G: It is a structural schematic diagram of the non-powder falling state of the powder supply tank.

Fig. 2A: is a partial structural schematic view of the desktop three-dimensional forming device of the present invention.

Fig. 2B: is a schematic structural view of the nozzle cleaning device of the present invention.

Fig. 2C: is a schematic structural view of the nozzle sealing device of the present invention.

FIG. 2D : is an exploded perspective view of the detached cover plate in FIG. 2C .

Fig. 2E: is a partial cross-sectional schematic diagram of the nozzle sealing device.

FIG. 2F-FIG. 2G are schematic diagrams of the action process of the nozzle sealing device covering the nozzle.

Fig. 3A: is a partial structural schematic view of the desktop three-dimensional forming device of the present invention.

Fig. 3B: It is a structural schematic diagram of the construction tank and the lifting equipment.

Fig. 3C: is a schematic diagram of the carrying platform of the lifting device.

Fig. 3D: is a partial structural schematic diagram of Fig. 3C.

FIG. 3E : is a structural schematic diagram of the buckling of the construction groove and the buckling component.

FIG. 3F is a schematic diagram of the separation of the construction groove and the buckle part.

Fig. 3G: It is a side view of the bottom plate of the construction tank and the lifting platform viewed from the direction A in Fig. 3D.

Fig. 3H: is the bottom view of the lifting platform in Fig. 3D.

Fig. 3I: It is a combination diagram of the protruding part and the locking slider group.

FIG. 3J : is an exploded perspective view of the protruding part and the locking slide seat assembly.

Fig. 3K: It is a side view structural view of the combination of the protruding part and the locking slider group.

Fig. 3L: It is a side structural view of the protruding part separated from the locking slider group.

Detailed ways

Some typical embodiments embodying the features and advantages of the present invention will be described in detail in the description in the following paragraphs. It should be understood that the present invention can have various changes in different aspects, all of which do not depart from the scope of the present invention, and the descriptions and diagrams therein are used for illustration in nature, not for limiting the present invention. invention.

Please refer to FIG. 1A , which is a schematic diagram of a three-dimensional structure of a desktop three-dimensional forming device according to a preferred embodiment of the present invention. As shown in Figure 1A, the base platform 10 of the desktop three-dimensional molding device 1 of the present invention mainly includes a printing assembly 11, a powder supply tank 12 and a construction tank 13, wherein the tank body 130 of the construction tank 13 (as shown in Figure 1B) It extends downward from the base platform 10 and is partially disposed on the base platform 10 . The powder supply tank 12 is used to supply the building powder into the building tank 13 , and the printing unit 11 performs printing, so as to stack and form the three-dimensional objects to be formed in the building tank 13 . The interior of the construction tank 13 has a bottom plate 131 (as shown in FIG. 1B ), which is used to carry powder and layer-by-layer stacked three-dimensional objects, and is fixed on the lifting platform 61 (as shown in FIG. 1B ), which can be supported by the lifting device 60 (As shown in FIG. 3A ) is driven to move up and down inside the construction tank 13 .

In one embodiment, the construction tank 13 is arranged at the central part of the desktop three-dimensional molding device 1, the printing unit 11 is arranged at the left side of the construction tank 13, and the powder supply tank 12 is arranged at the right side of the construction tank 13. In this embodiment As an example, the printing unit 11 will print from the left side to the right side along the X-axis, but the actual operation mode is not limited thereto. Please refer to Fig. 1A, Fig. 1B and Fig. 1C, wherein Fig. 1B is a cross-sectional structure diagram of the printing components, powder supply tank and build tank in Fig. 1A, and Fig. 1C is a schematic diagram of the powder supply tank moving to the top of the build tank for powder spreading. The operation mode of the desktop three-dimensional molding device 1 of the present invention is as follows: first, the powder supply tank 12 on the right side moves from right to left along the X-axis direction to the top of the construction tank 13, and at the same time, powder is spread on the bottom plate 131 of the construction tank 13, After the powder spreading is completed, the powder supply tank 12 moves to the right and resets, and the powder spreading wheel 16 set on the left side of the powder supply tank 12 pushes and flattens the powder so that the powder is evenly spread on the bottom of the construction tank 13 The entire surface of the bottom plate 131, and the excess powder can be pushed into the recovery tank 14, so that it can be recycled and reused.

In one embodiment, the desktop three-dimensional molding device 1 of the present invention also includes a spray printing molding and powder spreading isolation operation device, which includes a telescopic dustproof sheath 15, which is connected to the right end of the powder supply tank 12, when When the powder supply tank 12 moves to the left and spreads powder on the construction tank 13, the telescopic dustproof sheath 15 will be stretched and covered the entire construction tank 13 at the same time, and the powder coating powder will also be covered at the same time, which can prevent dust from flying , the parts on the base platform 10, especially the transmission parts, have a dust-proof effect, which can prevent flying dust from adhering to the transmission parts, which will affect its service life and printing accuracy. At the same time, the powder supply tank 12 After the powder spreading is completed, the powder is also covered and settled on the construction tank 13, so that the printing unit 11 can print again, which can greatly reduce the dust flying, which is different from the dust flying caused by simultaneous powder spreading and printing in the prior art. missing.

Please refer to FIG. 1A again, the table-top three-dimensional molding device 1 of the present invention further includes a first transmission component for driving the movement of the powder supply tank 12 in the X direction. The first transmission part includes a motor 20, a ball lead screw 21, a bushing 22, a linear slider 23 and a kit 24, wherein the bushing 22 is sleeved on the ball guide screw 21, and the kit 24 is sleeved on the linear slider 23, The ball lead screw 21 and the linear slide bar 23 straddle the two sides of the powder supply tank 12 and are arranged parallel to each other. As shown in Figure 1A, the powder supply tank 12 is fixed on a bearing plate 25, and the shaft sleeve 22 and the sleeve 24 are respectively connected and fixed on the bearing plate 25. Therefore, when the motor 20 drives the ball screw 21 to rotate, the shaft sleeve 22 It will reciprocate on the ball lead screw 21, so it can drive the movement of the powder supply tank 12 in the X direction. With the arrangement of the movable powder supply tank, the desktop three-dimensional molding device 1 can achieve better spatial configuration.

When the powder supply tank 12 completes the powder supply and moves to the right to reset or after that, the printing assembly 11 will move to the right to the top of the construction tank 13, and use inkjet printing technology on the part of the powder laid in the construction tank 13 Jet printing high-viscosity adhesive liquid, so that the adhesive liquid and powder stick and solidify. The printing unit 11 can be controlled by the second transmission part 18 to move in the X direction and the Y direction. The transmission mode of the printing unit 11 is commonly used in general printing devices, so it will not be repeated here.

Subsequently, when the printing operation is completed, the printing assembly 11 will move to the left and reset, and the bottom plate 131 of the construction tank 13 will also be controlled by the lifting device to drop a predetermined height in the Z direction, and then the powder supply tank 12 can be used to supply powder. Powder operation, re-lay a layer of powder on the powder that has been printed, and carry out the next printing operation. The predetermined three-dimensional object, that is, the 3D solid model, can be completed by repeating the above-mentioned process layer by layer.

Please refer to Figure 1D-Figure 1G, where Figure 1D is a schematic structural diagram of the powder supply tank shown in Figure 1A when the cover is opened, Figure 1E is a partial structural schematic diagram of Figure 1D, and Figure 1F is the structure of the powder supply tank in the state of powder falling Schematic diagram, Fig. 1G is a schematic diagram of the structure of the powder supply tank in a non-powder falling state. As shown in the figure, there is a stirring bar 121 inside the powder supply tank 12 , which is driven by a motor 122 to stir the powder in the powder supply tank 12 to promote the uniform distribution of powder in the powder supply tank 12 . The stirring rod 121 is connected with an eccentric wheel 123 for driving a plate 124 having a plurality of elongated slots 125 to move. Please refer to Fig. 1F and Fig. 1G at the same time, which is a cross-sectional structure diagram of the powder supply tank. When rotating, the plate 124 will swing left and right accordingly. When the slot 125 of the plate 124 is aligned with the opening 126 at the bottom of the powder supply tank 12 to communicate (as shown in Figure 1F), the powder in the powder supply tank 12 That is, through the slot 125 and the opening 126, it can drop into the construction slot 13 for powder supply; on the contrary, when the slot 125 and the opening 126 are dislocated and not connected (as shown in Figure 1G), the powder will not be able to fall into the construction slot. In the tank 13, the amount of powder supplied can be controlled and powder leakage can be prevented.

In addition, as shown in FIG. 1E , the slots 125 provided on the plate 124 are horizontal and separated from each other, and the openings 126 provided at the bottom of the powder supply tank 12 are also horizontal and separated from each other. Therefore, powder supply can be carried out on the construction tank 13 in a segmented way of falling powder, so that the powder spreading density on the construction tank 13 is consistent, which can solve the problem that the prior art provides all the powder at one time when the powder supply starts, causing the push to start. Due to the weight and pushing during powdering, the density of powder spreading in the front section and the back section is uneven and the problem of excessive surplus powder being pushed into the recovery tank 14 is formed.

Furthermore, since it is necessary to wait for the molding drying time after each powder spreading and spray printing is completed, in the prior art, it takes about three minutes for the powder to dry and stick to each powder spreading, which greatly increases the overall molding time. Therefore, in order to achieve a higher Fast drying speed, the desktop three-dimensional molding device 1 of the present invention also includes a heating assembly 17 (shown in FIG. Accelerate the speed of powder drying and adhesion, and shorten the overall molding time. In one embodiment, the heating element 17 may further include a temperature sensor 171 capable of sensing the temperature of the heating element 17 for proper temperature control.

Please refer to FIG. 2A , which is a partial structural schematic diagram of the desktop three-dimensional forming device of the present invention, wherein the printing component is removed to show the structure below the printing component. As shown in the figure, the desktop three-dimensional forming device 1 of the present invention further includes a nozzle cleaning device 30 and a nozzle sealing device 40 . In one embodiment, the nozzle cleaning device 30 and the nozzle sealing device 40 are arranged on one side (for example, the left side) of the printing assembly standby position, wherein the nozzle cleaning device 30 can clean the remaining ink on the nozzle after the nozzle completes the printing operation. The glue and sticky powder are removed, and the nozzle sealing device 40 can provide a moist environment when the nozzle is sealed to prevent the nozzle from drying out.

Please refer to FIG. 2B , which is a schematic structural view of the nozzle cleaning device of the present invention. As shown in the figure, the nozzle cleaning device 30 has a box body 31, a base 32, a driving device 33 and at least one scraper 34. The base 32 is housed in the box body 31 and can be driven by the driving device 33, and in X reciprocating motion in the direction. The scrapers 34 extend upwards from the surface of the base 32 and are arranged corresponding to the printing cartridges. Taking the printing assembly with two printing cartridges as an example, the nozzle cleaning device 30 can have two sets of scrapers 34 corresponding to the two printing cartridges. Each set has but not limited to two scrapers 34, and the two scrapers 34 are arranged parallel to each other, and the scrapers can be made of rubber material. After the print head completes the printing operation, the print box will be moved to the top of the print head cleaning device 30, and the print head corresponds to the position of the scraper 34 and is in contact with the scraper 34. At this time, the driving device 33 drives the base 32 in the X direction The upward reciprocating movement can make the scraper 34 move on the surface of the nozzle to scrape off the residual adhesive and sticky powder on the nozzle.

In addition, since the adhesive and powder are easy to adhere to the nozzle, it is difficult to scrape off completely. Therefore, the nozzle cleaning device 30 of the present invention also has a liquid spray system, including a liquid storage tank 35, a liquid suction pipe 36, a liquid spray pipe 37 and The waste liquid pipe 38 and the liquid storage tank 35 are arranged adjacent to the box body 32, and the liquid is delivered to the liquid storage tank from the liquid supply device (set under the base platform 10 in FIG. 1A , not shown) through the liquid suction pipe 36 35, and utilize the liquid spray pipe 37 to spray the liquid to the spray head, wherein the liquid spray port 371 of the liquid spray pipe 37 is arranged next to the scraper 34, and the number of the liquid spray port 371 is preferably the same as that of the scraper 34. The numbers are the same, for example, when the printing device has two printing cartridges, the water jet cleaning device 30 has two sets of scrapers 34 and two liquid jet ports 371 .

Therefore, when the nozzle completes the printing operation and moves above the nozzle cleaning device 30, the nozzle cleaning device 30 will first spray a little liquid to the nozzle, wherein the liquid can be but not limited to water, cleaning agent or solvent for wetting The glue and powder on the nozzle can make the scraper 34 more convenient and easy to clean the nozzle, so when the driving device 33 drives the scraper 34 to move on the surface of the nozzle, the residual glue and sticky powder on the nozzle can be easily removed Scrape off to achieve the purpose of cleaning the nozzle.

In addition, the liquid ejected from the liquid injection port 371 and the waste liquid and waste residue scraped off by the scraper 34 will flow into the box body 31, and flow to the waste liquid device through the waste liquid pipe 38 connected with the box body 31 (setting Below the base platform 10 in FIG. 1A , not shown), for waste liquid treatment.

On the other hand, the aforementioned nozzle cleaning device 30 can also be applied to cleaning nozzles of general 2D printing devices in addition to being applied to three-dimensional forming devices. For example, according to the concept of the present invention, the existing printing device can be improved to spray a little liquid to the nozzle before the scraper cleans the nozzle, so that the ink or highly volatile ink can be wetted, so that when the scraper cleans the nozzle More convenient and easier.

Please refer to FIG. 2C and FIG. 2D , wherein FIG. 2C is a schematic structural view of the nozzle sealing device of the present invention, and FIG. 2D is an exploded perspective view of the detached cover plate of FIG. 2C . As shown in the figure, the nozzle sealing device 40 includes a base 41, a sliding seat 42, a bearing seat 43, a sealing member 44, a moisturizing device 45 and a humidity sensor 46, wherein the sliding seat 42 is arranged on the base 41, and the bearing seat 43 is disposed on the sliding seat 42 , and the sealing member 44 is disposed on the bearing seat 43 . The bearing seat 43 is composed of a bearing groove body 431 and a cover plate 432. The sealing member 44 is accommodated in the bearing groove body 431 of the bearing seat 43, and partially protrudes from the top surface of the bearing seat 43, wherein the bearing seat 43 The cover plate has an opening 433 corresponding to the sealing component 44 , so that the sealing component 44 can pass through the opening 433 and protrude from the top surface of the bearing seat 43 . The sealing member 44 is used to cover and seal the nozzle of the printing box to keep the humidity of the nozzle and prevent the glue from drying up and blocking the nozzle of the nozzle. The shape and position of the sealing member 44 are set corresponding to the nozzles of the printing cartridges, so the number of sealing members can also vary corresponding to the number of the printing cartridges, not limited to the two sealing members 44 shown in this embodiment.

In order to ensure the moisturizing state when the sealing member 44 wraps and seals the nozzle, the nozzle sealing device 40 of the present invention also has a moisturizing device 45, which includes a water storage tank 451, a suction pipe 452, a spray pipe 453 and a water collection pipe 454. The water storage tank 451 is arranged adjacent to the base 41, and delivers water to the water storage tank 451 from the water supply device (set under the base platform 10 in FIG. An atomizer (not shown) is used to atomize the moisture and use the spray pipe 453 to spray the mist into the bearing tank body 431 of the bearing seat 43 through the spray port 455, and the side of the sealing member 44 has a groove 441, so The mist can enter the sealing member 44 along the slot 441, and emit upwards from the slits 442 on both sides (as shown by the arrow in Figure 2E, wherein Figure 2E is a partial cross-sectional schematic diagram of the nozzle sealing device), so that the nozzle can be kept moist . The water collecting pipe 454 is connected to the water storage tank 451 and a water collecting device (disposed below the base platform 10 in FIG. 1A , not shown) for the purpose of collecting water for recycling.

In addition, the nozzle sealing device 40 of the present invention also includes a humidity sensor 46, which is arranged in the bearing tank body 431 of the bearing seat 43. When the humidity inside the bearing base 43 is sensed to be insufficient, the spraying device 45 can be activated to spray, so that The internal humidity of the bearing seat 43 is kept above 80%, so as to avoid drying of the nozzle and further prolong the service life of the nozzle.

Please refer to FIG. 2C and FIG. 2F-FIG. 2G at the same time, wherein FIG. 2F-FIG. 2G are schematic diagrams of the action process of the nozzle sealing device covering the nozzle. As shown in Figure 2C, the sliding seat 42 has a stopper 421 and at least one ejector pin 422, the stopper 421 extends upward from the surface of the sliding seat 42, and the ejector pin 421 protrudes from the side of the sliding seat, and is arranged on In the path guide rail 411 on the side of the base 41 , the path guide rail 411 is composed of an inclined surface 4111 and a plane 4112 connected to the top of the inclined surface 4111 (as shown in FIG. 2F ).

After the printing assembly 11 completes the printing operation, the carrying frame 51 carrying the printing cartridge 50 will be reset to the top of the nozzle sealing device 40, and during the reset process, the carrying frame 51 carrying the printing cartridge 50 will first be in contact with the sliding seat 42 At this time, there is still a distance h between the bottom of the printing cartridge 50 and the sealing member 44 (as shown in FIG. 2F ). Then, the carrying frame 51 carrying the printing cartridge 50 will continue to push forward against the stopper 421 on the sliding seat 42, so that the ejector pin 422 on the side of the sliding seat 42 moves along the path guide rail 411 and slides to the plane along the inclined surface 4111 4112, thus the height of the bearing seat 43 and the sealing member 44 can be raised along with the movement of the sliding seat 42, so that the sealing member 44 is covered on the nozzle 52 of the printing box 50 (as shown in Figure 2G), so the nozzle 52 It can be sealed in the sealing part 44 and sprayed by the moisturizing device 40, which can maintain the humidity of the nozzle 52, prevent the nozzle from drying out, and further extend the service life of the nozzle 52.

It can be seen from the above description that the desktop three-dimensional forming device of the present invention is provided with a nozzle cleaning device 30 and a nozzle sealing device 40. After the nozzle completes the printing operation, the nozzle can be cleaned by means of the liquid spray system and the scraper of the nozzle cleaning device 30. Thoroughly clean and seal the nozzles in the nozzle sealing device 40 with humidity control, so the complete anti-fouling and anti-drying effects of the nozzles can be achieved.

Of course, the nozzle sealing device 40 of the present invention can also be applied to the nozzle sealing of a general 2D printing device in addition to being applied to a three-dimensional forming device, that is, according to the concept of the present invention, the existing nozzle sealing device is added to the design of the moisturizing device, so as to Make sure the nozzle is wet.

On the other hand, the desktop three-dimensional molding device of the present invention also has a detachable construction tank design, which can remove the construction tank and the three-dimensional objects formed in the construction tank, and remove powder and take parts to other places to solve the existing problems. When the technology is taking the finished product, it is easy to cause the shortcoming of working environment pollution due to flying powder. The design of the detachable construction tank of the present invention will be described below.

Please refer to FIG. 3A , which is a partial structural diagram of the desktop three-dimensional forming device of the present invention. As shown in the figure, the bottom of the construction tank 13 is fixed on the lifting device 60, and the lifting device 60 will drive the lifting platform 61 and fix it on the lifting platform 61 after each printing layer of the printing component 11 or after a certain thickness is produced. The base plate 131 descends inside the construction tank 13 (as shown in FIG. 1C ), and the printing unit 11 will continue to cooperate with the powder supply tank 12 to produce three-dimensional objects until the entire three-dimensional object is formed.

Please refer to FIG. 3A and FIG. 3B at the same time, wherein FIG. 3B is a schematic structural diagram of the construction tank and the lifting device. As shown in the figure, the bottoms of both sides of the construction tank 13 in the Y direction have outwardly protruding ear pieces 132, and the lifting device 60 has a carrying platform 62 for carrying the tank body 130 of the construction tank 13 and the waste powder recovery device. 70, and has a buckle part 63 protruding upward from the bearing platform 62, which is set corresponding to the ear piece 132 of the construction groove 13, and can be buckled with the ear piece 132 to fix the groove body of the construction groove 13 on the bearing on platform 62. In addition, a waste powder recovery device 70 is provided on the side of the construction tank 13, which is arranged below the recovery tank 14 on the base platform 10, to collect the waste powder falling from the recovery tank 14, and the waste powder recovery device 70 also has A handle 71 can conveniently take out the waste toner recovery device 70 along the guide groove 6211 on the carrying platform 62 for further waste toner recovery treatment.

Please refer to FIG. 3C and FIG. 3D , wherein FIG. 3C is a schematic diagram of the carrying platform of the lifting device, and FIG. 3D is a partial structural schematic diagram of FIG. 3C . As shown in the figure, the carrying platform 62 of the lifting device 60 includes an upper plate 621 and a lower plate 622 , and FIG. 3D is a structural schematic diagram with the upper plate 621 removed. The buckle part 63 includes a hook part 631, a buckle slide seat 632 and a buckle slider 633. The hook part 631 is approximately in an inverted L shape and protrudes upwards from the upper plate 621 of the carrying platform 62 for connecting with the construction groove. The ear pieces 132 of 13 are buckled, and the buckle slide 632 is connected to the bottom of the hook portion 631 and arranged on the lower plate 622 of the bearing platform 62, and has elastic elements inside it, such as but not limited to springs (shown as 6321 of FIG. 3E ), and the buckle slider 633 is disposed on the front edge of the buckle slide seat 632 facing the center of the lower board member 622 and has an inclined surface 6331 .

Please refer to FIG. 3C-FIG. 3D and FIG. 3E-FIG. 3F at the same time, wherein FIG. 3E shows a schematic diagram of the structure of the construction groove and the buckle component being engaged, and FIG. 3F shows a schematic diagram of the structure of the construction groove and the buckle component separated. As shown in the figure, the lifting device 60 can drive the lifting platform 61 and the bottom plate 131 fixed on the lifting platform 61 to descend inside the construction groove 13 during the forming process of the three-dimensional object, and during the forming process, the ear pieces of the construction groove 13 132 will engage with the hook portion 631 on the loading platform 62 of the lifting device 60, so that the construction groove 13 is fixed on the loading platform 62 (as shown in FIG. 3E ). When the molding of the three-dimensional article is completed, the bottom plate 131 of the construction tank 13 and the lifting platform 61 will drop to the bottom of the construction tank 13. Since the bottom surface of the lifting platform 61 has two top blocks 611, and the top block 611 has a slope 6111, the slope of the top block 611 6111 is the slope 6331 corresponding to the locking slider 633 . When the lifting platform 61 descends to the bottom of the construction groove 13, the top block 611 will push against the buckle slider 633 of the buckle component 63, and utilize the top contact between the slope 6111 of the top block 611 and the slope 6331 of the buckle slider 633 The pushing action and the elastic deformation of the spring 6321 push the buckle part 63 outward, so that the ear piece 132 of the construction groove 13 is separated from the hook part 631 , and the construction groove 13 can be disassembled from the three-dimensional forming device 1 .

In addition, before the construction tank is disassembled, the bottom plate of the construction tank originally fixed on the lifting platform will also be separated from the lifting platform. The fixing and separation of the bottom plate of the construction tank and the lifting platform will be described below.

Please refer to FIG. 3G-FIG. 3H, wherein FIG. 3G is a side view of the bottom plate of the construction tank and the lifting platform in FIG. 3D viewed from the direction A, and FIG. 3H is a bottom view of the lifting platform in FIG. 3D. As shown in the figure, the bottom plate 131 has a protruding part 80, and the bottom surface of the lifting platform 61 has a catch slide seat group, which is composed of two correspondingly arranged catch slide seats 81, and the protruding part 80 can be caught on the catch slide. In the seat group, the base plate 131 is thereby fixed on the lifting platform 61 . In one embodiment, the bottom plate 131 of the present invention has two protruding parts 80 , and the bottom surface of the lifting platform 61 also has two locking slider sets, but the present invention is not limited thereto.

Please refer to FIG. 3I-FIG. 3J , which are the combined view and the exploded perspective view of the protruding part and the locking slider assembly respectively. As shown in the figure, the protruding member 80 includes a disc portion 801 at the top, a conical portion 802 at the bottom, and a cylindrical portion 803 connecting the disc portion 801 and the conical portion 802, wherein the disc portion 801 is accommodated in the bottom plate 131, and the conical portion The tip of the cone 802 faces downward, and the diameter of the cylindrical portion 803 is smaller than the diameter of the top surface of the conical portion 802 . The catch slide 81 includes a catch head 811, a spring 812 and a slide seat 813. The spring 812 is accommodated in the groove 8131 of the slide seat 813 and connects the catch head 811 and the slide seat 813, and the catch head 811 also Part is accommodated in the groove 8131 of the sliding seat 813 . In addition, the front edge of the locking head 811 has a semicircular recess 8111. When the two locking slides 81 are arranged correspondingly, the two semicircular recesses 8111 can be combined into a circle, and its diameter is roughly equal to that of the protruding part 80. The diameter of the cylindrical portion 803 is long. When the protruding part 80 at the bottom 131 of the construction groove passes through the corresponding hole (not shown) on the lifting platform 61, the conical part 802 of the protruding part 80 will first contact the catch head 811 of the catch slide seat 81, and make the spring 812 The elastic denaturation causes the catch head 811 to shrink in the groove 8131 of the slide seat 813, the conical part 802 of the protruding part 80 can pass through the catch head 811, and after the conical part 802 passes through the catch head 811, the catch The catch head 811 and the spring 812 will reset, and the semicircular concave portion 8111 of the catch head 811 will cover the cylindrical portion 803 of the protruding part 80, so that the protruding part 80 is locked in the catch slide group, and the bottom plate 131 is now Can be fixed on the lifting platform 61.

Please refer to FIGS. 3C-3D again, the lower plate 622 of the carrying platform 62 also includes at least one abutting seat 82 , which is set corresponding to the locking slide seat group on the bottom surface of the lifting platform 61 . The top surface of the abutting seat 82 has a concave portion 821, which can accommodate the conical portion 802 of the protruding part 80, and the two sides of the abutting seat 82 have slopes 822 respectively, which are corresponding to the locking heads of the sliding seat 81. Bevel 8112 at the bottom of 811 (as shown in FIG. 3J ).

Please refer to FIG. 3K-FIG. 3L, wherein FIG. 3K is a side view structural view of the combination of the protruding component and the locking slider set, and FIG. 3L is a side view structural view of the protruding component separated from the locking slider set. As shown in the figure, during the forming process of the three-dimensional object, the protruding part 80 will be locked in the locking slide group (as shown in FIG. 3I and FIG. 3K ), so that the bottom plate 131 is fixed on the lifting platform 61 . When the three-dimensional object is formed, the bottom plate 131 of the construction tank 13 and the lifting platform 61 will drop to the bottom of the construction tank 13. At this time, the latch head 811 of the latch slide seat 81 will touch the top seat 82, and the latch head 811 will The pushing action between the inclined surface 8112 of the seat 82 and the inclined surface 822 of the top seat 82 and the elastic deformation of the spring 812 push the catch head 811 outward and retract it into the groove 8131 of the slide seat 813, so that the two catch heads 811 The distance between them is greater than the diameter length of the top surface of the conical part 802 of the protruding part 80, and the protruding part 80 is no longer locked in the locking slide seat group, and the bottom plate 131 and the lifting platform 61 can be separated to further move the construction groove 13 from The three-dimensional forming device 1 is disassembled.

Therefore, during the molding process of the three-dimensional object, the groove body of the construction groove 13 can be fixed on the bearing platform 62 of the lifting device 60 through the effect of the ear piece 132 and the buckle part 63, and the bottom plate 131 can slide through the protruding part 80 and the buckle The seat group is fixed on the lifting platform 61 of the lifting device 60 so that the bottom plate 131 can rise or fall inside the construction groove 13 as the lifting platform 61 rises and falls. When the three-dimensional object is formed, the bottom plate 131 and the lifting platform 61 will drop to the bottom of the construction groove 13. At this time, the ear piece 132 is separated from the buckle part 63 (as shown in FIG. 3F), and the protruding part 80 is combined with the locking slide seat. Separation (as shown in Figure 3L), make construction groove 13 no longer be fixed on the carrying platform 62, base plate 131 is also no longer fixed on the lifting platform 61, and base plate 131 can be carried on the bottom of construction groove 13 protruding toward the inside of the construction groove. on the protrusion 133 (as shown in FIG. 3F ), so the entire construction tank 13 together with the bottom plate 131 can be disassembled from the three-dimensional molding device 1, and moved to another place for powder removal and taking out the three-dimensional object formed in the construction tank 13 , so it can solve the disadvantages of the prior art that the working environment is easily polluted due to flying powder when the finished product is taken.

To sum up, the three-dimensional molding device of the present invention has a movable powder supply tank, which can save waiting time for drying and take out the parts easily, and the powder supply tank has a segmented powder spreading and heating design, which can make The density of powder spreading is consistent, and the speed of powder drying and adhesion is accelerated, the overall molding time is shortened, and the device of the present invention has a dust-proof design for the isolation of spray printing and powder spreading areas, which can avoid flying dust and pollute the work quality during spray printing. In addition, the present invention provides a nozzle cleaning device and a nozzle sealing device. After the nozzle completes the printing operation, the nozzle can be thoroughly cleaned by means of the liquid spray system and the scraper of the nozzle cleaning device, and the nozzle can be sealed in the nozzle with humidity control. The sealing device can achieve the complete anti-fouling and anti-drying effect of the nozzle. Furthermore, the present invention also has a design of a detachable construction tank. The construction tank and the three-dimensional objects formed in the construction tank can be removed together to replace another construction tank to continue printing. The completed construction tank and finished products can be moved to Powder removal and pick-up are carried out elsewhere to solve the shortcomings of the prior art, which is easy to cause pollution to the working environment due to flying powder and waiting for drying time when the finished product is taken. Therefore, the desktop three-dimensional forming device of the present invention has great industrial value.

Claims (8)

1. A three-dimensional forming device with a detachable construction tank for forming a three-dimensional object, the three-dimensional forming device at least includes: A detachable construction tank, which has a tank body and a bottom plate, the bottoms on both sides of the tank body have at least one outwardly protruding ear piece, and the bottom plate has at least one protruding part; and A lifting device has a lifting platform, which is arranged below the construction tank, used to carry the bottom plate of the detachable construction tank on it, and controls the lifting displacement of the bottom plate during the molding process of the three-dimensional object, and has a carrying platform for carrying the tank body of the detachable construction tank on it; Wherein the detachable construction tank is separated from the lifting device when the three-dimensional object is formed, so as to remove powder and take parts; the carrying platform has at least one buckle part, and the buckle part corresponds to the detachable construction tank. The ear piece is arranged and buckled with the ear piece, so that the tank body of the detachable construction tank is fixed on the carrying platform during the molding process of the three-dimensional object; the buckling part of the carrying platform includes a A hook part, a buckle slide seat and a buckle slide block, the hook part is buckled with the ear piece of the detachable construction groove, an elastic element is arranged in the buckle slide seat, and the buckle slide The block has a slope. 2. The three-dimensional forming device with a detachable construction slot according to claim 1, characterized in that the bottom surface of the lifting platform has at least one top block, and the top block has an inclined surface, when the lifting platform is lowered to the detachable When the bottom of the type construction groove, the inclined surface of the top block touches the inclined surface of the buckle slider, and pushes the buckle part outward, so that the ear piece of the detachable construction groove and the buckle part The hook part is separated to disengage the detachable construction slot from the lifting device. 3. The three-dimensional forming device with a detachable construction slot according to claim 1, characterized in that the bottom surface of the lifting platform has at least one locking slider group, and the bottom plate of the detachable construction slot passes through the protruding part The catch is fixed on the lifting platform by the catch slide seat group. 4. The three-dimensional forming device with a detachable construction groove according to claim 3, characterized in that the protruding part of the detachable construction groove comprises a cylindrical portion and a conical portion connected to the bottom end of the cylindrical portion, the conical portion The cone point of the part is downward, and the diameter length of the cylindrical part is smaller than the diameter length of the top surface of the cone part. 5. The three-dimensional forming device with a detachable construction slot according to claim 4, wherein the set of locking slides comprises two oppositely arranged locking slides, and the locking slides comprise a locking head, A spring and a sliding seat, the front edge of the locking head has a semi-circular recess, which is used to cover the cylindrical part of the protruding part, so that the protruding part is locked in the locking sliding seat group, thereby fixing The bottom plate of the detachable construction tank is on the lifting platform. 6. The three-dimensional forming device with a detachable construction slot according to claim 5, wherein the carrying platform of the lifting device includes at least one abutting seat, which corresponds to the group of locking slides on the bottom surface of the lifting platform And set. 7. The three-dimensional forming device with a detachable construction slot according to claim 6, wherein the two latching heads of the latching slide seat group of the lifting device respectively have a slope, and the two sides of the abutting seat Each side has an inclined surface. When the lifting platform descends to the bottom of the detachable construction groove, the inclined surface of the locking head touches the inclined surface of the abutting seat, and pushes the locking head outward, so that the The protruding part is no longer locked in the locking slide seat group, so as to separate the bottom plate of the detachable construction tank and the lifting platform, and further detach the detachable construction tank from the lifting device. 8. The three-dimensional forming device with a detachable construction groove according to claim 1, characterized in that the detachable construction groove also has at least one protrusion, which is arranged on the bottom of the detachable construction groove and faces toward the The interior of the detachable construction tank protrudes, and bears the bottom plate of the detachable construction tank when the detachable construction tank is separated from the lifting device.

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