TWI538798B - Three-dimensional printer - Google Patents

Description

3D printer

This case relates to a rapid prototyping device, especially a three-dimensional printer that can be placed on a table to greatly reduce the volume.

With the advancement of technology, the recent three-dimensional printing technology is quietly rising, which is enough to change the potential technology of the production mode of the product. Even if only one item is processed, the input cost is low, and any shape item can be processed freely. We look forward to three-dimensional printing technology to change the technical thinking in the manufacturing, medical and IT fields, and lead the industry innovation. 3D printing technology has been applied in some parts of the industry. For example, in the field of biomedical applications, 3D printers can be used as the main structure to manufacture the required 3D medical products, and even unique products such as artworks can be used. It is manufactured by 3D printers and has a wide range of applications.

For three-dimensional printers on the market, it can be divided into three-dimensional printers for resin materials or powder applications. For example, SLA, DLP, FDM, MJM and other technologies are resin applications, and SLS, 3DP and other technologies are powder application devices. There are advantages and disadvantages. However, regardless of the 3D printing of any material, there is a certain degree of pollution. For example, a three-dimensional printer made of resin is a hot-melt plastic molding, so it emits a toxic plastic smell, while a powder-based 3D printer will A thin layer of powder is placed in the environment. Such three-dimensional printers are too numerous to mention, these are just environmental pollution, heavy It is inhaled into the digestive system of the human body, and it accumulates over time, causing the body tube to be poisoned by chemical substances.

In terms of price of the three-dimensional printer on the market, although the three-dimensional printer applied by the resin material is relatively inexpensive, the processing precision is low, and the support material is required to assist in forming the complicated structure, and the support material is not recyclable, which may cause environmental problems. Therefore, there are problems such as highly toxic substances in molten materials and environmental pollution of supporting materials. Therefore, in the market price implementation, although it has the advantages of miniaturization and low cost, it still causes some environmental protection and health hazards. There are still many scruples in the implementation, and it is still not possible to apply it in a large number of industries that require daily life.

At present, the powder type three-dimensional printer on the market, the powder type three-dimensional printer, the powder material can be plastic, metal, ceramic, etc., the application surface is wide, and has high molding precision, can form complex structures without The support material and the unformed raw materials can be recycled, so the environmental protection problem can be greatly reduced. Although some environmental pollution may be harmful to the health of the dust operation, the problem can be overcome by a device capable of recycling and sealing clean design, so that its future development is promising.

In view of this, the current demand for high-performance and compact powder-type three-dimensional printers in the industry is widely used, which is also a main subject of research and development of the present invention.

The main purpose of this case is to provide a high-performance miniaturized powder type three-dimensional printer, which can be popularized and applied, and has advantages such as manufacturability, speed, precision, strength, price, market demand, operability, size, and cleanliness.

In order to achieve the above object, a broader aspect of the present invention provides a three-dimensional printer comprising: a main body having a construction platform covered with a cover so that The host body forms a closed construction platform space, and the main body is equipped with a ventilation device and a filter for discharging the fluid in the closed construction platform space to form a negative pressure working interval, and the main body is erected externally. An ink supply unit holder; a supply chamber is disposed on the construction platform for providing a powder construction material temporarily stored therein; a construction chamber is constructed on the construction platform, and the powder construction material is stacked a construction displacement mechanism is constructed on the construction platform for relative displacement; a printing module is arranged on the construction displacement mechanism for interlocking displacement, and is driven by a printing displacement mechanism to carry at least one ink The carrier is reciprocally displaced, and the predetermined fluid is stored in the at least one ink cartridge and is provided with an inkjet head, and the inkjet head is driven to discharge a predetermined fluid to form the powder construction material, and the inkjet printing is performed. The displacement mechanism has a fixed structure and a spitting ink cartridge at one end, and the ink jet head of each ink cartridge can pass and maintain displacement in a coaxial straight direction, and another stop is arranged at the bottom of the printing module. a roller for pushing the powder construction material into the construction chamber; thereby, the construction displacement mechanism is displaced above the construction chamber, and the at least one ink jet of the printing module ejects a predetermined fluid to the construction On the powder building material above the chamber, a three-layer forming operation of the stacked printing is completed.

A preferred embodiment of the present invention provides a three-dimensional printer further comprising a powder recovery unit for collecting and recycling the powder construction material outside the construction chamber.

A preferred embodiment of the present invention provides a three-dimensional printer further comprising the powder recovery unit, comprising an overflow tank and a recovery collection box, the overflow tank is disposed behind the construction chamber, and the collection collection box communicates with the overflow tank The unused materials of the powder construction material are collectively recovered and reused.

The present invention provides a three-dimensional printer according to a preferred embodiment, further comprising a maintenance module, the maintenance module comprising a moisturizing unit and a scraping unit, wherein the moisturizing unit is used for The inkjet head of the at least one ink cartridge is closed to achieve a moisturizing effect, and the doctor unit performs a scraping cleaning operation on the inkjet head of the at least one ink cartridge.

The present invention provides a three-dimensional printer according to a preferred embodiment, wherein the construction displacement mechanism mainly comprises a structural pedestal structure on a set of sliding sliding rails, and the structural pedestal is driven by a driving belt driven by a driving component. The sliding rail is subjected to a reciprocating displacement movement in a direction, and the driving belt is constructed on a pivot to be controlled by a force adjusting component.

The present invention provides a three-dimensional printer according to a preferred embodiment, wherein the tension adjusting assembly is formed by a baffle member and an adjusting plate member being locked to the pivot shaft by a locking member, and the baffle member is provided at one end. There is an elastic compressor, the elastic compressor penetrates one end of the adjusting plate member to be pushed, and an adjusting window is provided in the middle of the adjusting plate member for the pivot to pass, and when the baffle member adjusts and moves, the elastic compression The device is compressed to change the original center position of the pivot, and is adjusted to the appropriate position of the opening window, and then the locking member is locked against the positioning position of the baffle member on the adjusting plate member to complete the tension of the driving belt. Adjust the tension adjusted by the component.

The present invention provides a three-dimensional printer according to a preferred embodiment, further comprising a continuous ink supply unit, wherein the continuous ink supply unit comprises a plurality of color ink replenishing containers, a binder replenishing container and a cleaning fluid replenishing container. The ink supply unit holder is positioned on the holder, and is respectively connected to the at least one ink cartridge for internal storage through a plurality of pipelines.

10‧‧‧Host body

101‧‧‧Building platform

102‧‧‧ Cover

103‧‧‧ ink supply unit base

104‧‧‧Exhaust equipment

105‧‧‧Filter

20‧‧‧Feeding chamber

201‧‧‧ Lifting and Displacement Mechanism

30‧‧‧Construction chamber

301‧‧‧ Lifting and Displacement Mechanism

40‧‧‧Powder Recycling Unit

401‧‧‧ overflow slot

402‧‧‧Recycling collection box

50‧‧‧ Construction of displacement mechanism

501‧‧‧ architecture pedestal

502‧‧‧Slide rails

503‧‧‧Drive components

504‧‧‧ drive belt

505‧‧‧ pivot

506‧‧‧Tensor adjustment kit

506a‧‧‧Baffle parts

506b‧‧‧Adjustment plate

506c‧‧‧Locking parts

506d‧‧‧elastic compressor

506e‧‧‧Open window

60‧‧‧Printing module

601‧‧‧Printing displacement mechanism

602‧‧‧ bearing seat

603‧‧‧Ink

604‧‧‧Spray cartridge

605‧‧‧ architecture pedestal

606‧‧‧Shifting wheel

70‧‧‧Maintenance module

71‧‧‧ moisturizing unit

72‧‧‧Scraper unit

80‧‧‧Continuous ink supply unit

801‧‧‧Color ink refill container

802‧‧‧Adhesive Replenishing Container

803‧‧‧Clean fluid replenishing container

804‧‧‧ pipeline

90‧‧‧Powder construction materials

A‧‧‧First direction

1 is a schematic view showing the appearance of a preferred embodiment of a three-dimensional printer of the present invention.

2 is a schematic view showing the internal structure of a preferred embodiment of the three-dimensional printer of the present invention.

Figure 3 is a perspective view of another embodiment of the preferred embodiment of the three-dimensional printer of the present invention. schematic diagram.

Fig. 4 is a schematic view showing the assembly of the ventilation device and the filter-related components of the preferred embodiment of the three-dimensional printer of the present invention.

FIG. 5 is a schematic view showing the configuration of a supply chamber, a construction chamber, and a powder recovery unit according to a preferred embodiment of the three-dimensional printer of the present invention.

Figure 6 is a schematic cross-sectional view showing the supply chamber, the construction chamber, and the powder recovery unit related components of the preferred embodiment of the three-dimensional printer of the present invention.

Figure 7 is a schematic view showing the construction of a member related to a displacement mechanism in accordance with a preferred embodiment of the present invention.

Figure 8 is a schematic view showing the tension adjustment of the belt of the member related to the displacement mechanism according to the preferred embodiment of the present invention.

Some exemplary embodiments embodying the features and advantages of the present invention are described in detail in the following description. It is to be understood that the present invention is capable of various modifications in various aspects, and is not to be construed as a limitation.

Referring to FIG. 1 , FIG. 2 , FIG. 3 and FIG. 4 , the three-dimensional printer of the present invention comprises a main body 10 , a supply chamber 20 , a construction chamber 30 , a powder recovery unit 40 , and a construction displacement mechanism 50 . The printing module 60, the maintenance module 70 and the continuous ink supply unit 80.

The main body 10 is provided with a construction platform 101, and a cover 102 is disposed to cover the device, so that the device can perform three-dimensional printing operations in a closed space to avoid dust flying and the like, and the main body 10 is provided with an external device. The ink unit holder 103 causes the color ink replenishing container 801 of the continuous ink supply unit 80 (C (Cyan) cyan ink, M (Magenta) magenta ink, Y (Yellow) yellow ink, K (Black) black color and the like Ink), a binder replenishing container 802, and a cleaning fluid replenishing container 803 The positioning of the ink supply unit holder 103, which is externally attached to the main body 10, is different from that of the old printer in the main body 10. Thus, the volume of the device can be greatly reduced. By placing it on the desktop, it is not necessary for the user to prepare a large space. Even the average individual can put the 3D printer on the desktop to make the space more efficient.

Further, as shown in FIG. 2, FIG. 3, and FIG. 4, a wind exhausting device 104 and a filter 105 are disposed on the main body 10 side, and the filter 105 is disposed at the end of the flow path of the air extracting device 104 and communicates with each other. In the main body 10, impurities such as particles and odor generated during printing can be adsorbed on the filter 105 at the end of the circulation path of the air extracting device 104 by the pumping operation of the air extracting device 104, so as to maintain the inside of the machine. A clean working area, and the environment of the machine is kept clean, creating a working area with negative pressure and no environmental pollution.

As shown in FIG. 5, FIG. 7 and FIG. 8, the supply chamber 20, the construction chamber 30, and the powder recovery unit 40 are all mounted on the construction platform 101, and are sequentially arranged in the front. a rear displacement position, wherein the construction displacement mechanism 50 is configured to perform an X-axis reciprocating displacement motion over the construction platform 101; and the construction displacement mechanism 50 mainly includes a structural pedestal 501 on a set of sliding slide rails 502, and the structure The drive pedestal 501 is driven by a drive unit 503 driven by a drive assembly 503 to perform an X-axis reciprocating displacement motion on the slide rail 502. In addition, the drive belt 504 is configured to receive a force on a pivot 505. Adjusting the tension controlled by the component 506, and the tension adjusting component 506 is formed by a shutter member 506a and an adjusting plate member 506b being locked to the pivot 505 by a locking member 506c, and the shutter member 506a is provided at one end. An elastic compressor 506d, the elastic compressor 506d is inserted into the adjusting plate 506b at one end to be pushed, and the adjusting plate 506b is provided with an opening window 506e for the pivot 505 to pass through, so that the baffle member 506a When moving in the first direction A (Fig. 8), the elastic compressor 506d can be compressed, and the original center position of the pivot 505 can be changed, and the position of the opening window 506e can be adjusted, and then the locking member 506c can be applied. The locking member abuts the positioning position of the flap member 506a on the adjusting plate member 506b, so that the center position of the pivot shaft 505 can be finely adjusted, so that the driving belt 504 carried on the pivot shaft 505 can adjust the proper tension. It can reduce the precision caused by the life of the mechanism. Taking the embodiment as an example, the construction displacement mechanism 50 can adjust the mechanical precision to 0.02 mm, and can be applied to the medical field, and can also be implemented by using the fine adjustment mechanical precision of the tension adjustment component 506, for example, the dental model of the dentist is currently The required precision is at least 0.05 mm, and the mechanical precision adjustment method of the constructed displacement mechanism 50 of the present invention can be used to achieve three-dimensional printing with a mechanical precision of 0.1 mm.

As shown in FIG. 2 and FIG. 6 , the printing module 60 is mounted on the displacement mechanism 50 to perform a reciprocating displacement movement in the Y-axis direction, and can be synchronously displaced with the construction displacement mechanism 50. The printing module 60 is configured by a printing displacement mechanism 601 in a frame pedestal 605 to drive a carrier 602 having at least one ink cartridge 603 for reciprocal displacement in a Y-axis direction, wherein the bottom of the frame 605 is provided The thrust roller 606, and the at least one ink cartridge 603 are provided with an inkjet head (not shown) having a resolution of at least 600 dpi or more, and the ink cartridge 603 can internally store at least one monochromatic liquid. For example, the carrier 602 carries two ink cartridges 603. Of course, the number of ink cartridges 603 of the present invention is not limited to this embodiment, and may be changed according to actual application conditions.

In addition, each ink cartridge 603 can store a bonding agent and three color inks, and an ink cartridge 603 is configured with C (Cyan) cyan ink, M (Magenta) magenta ink and a bonding agent to store each other, and the other one. The ink 603 is configured to store Y (Yellow) yellow ink, K (Black) black ink and a binder separated from each other, and is not limited thereto. on The binder and the color ink may be continuously supplied to the ink cartridge 603 by a continuous ink supply unit 80, which utilizes a replenishing container (color ink replenishing container 801, binder replenishing container 802, and cleaning fluid replenishing container 803). The internal flow of the ink cartridge 603 is stored through a plurality of pipelines 804, and can be stored in the interior of the ink cartridge 603 by the path of the pipeline 804 shown in FIG. 5 of the embodiment to form a continuous uninterrupted ink supply mode. In this embodiment, there are four color ink replenishing containers 801 for storing C (Cyan) cyan ink, M (Magenta) magenta ink, Y (Yellow) yellow ink, and K (Black) black, respectively.

In addition, the printing module 60 further includes a waste ink cartridge 604 fixed to one end of the printing displacement mechanism 601, and is also movable with the ink cartridge 603 in a linear direction of the Y-axis. Thus, the distance of displacement of each ink cartridge 603 can be directly shortened, so that each ink cartridge 603 can discharge the waste ink contaminated by the inkjet head to the waste ink cartridge 604 before the inkjet is used or after several inkjets. , does not pollute the machine, can maintain a clean working area, so in the same Y-axis linear direction design, different from the old printer's waste ink cartridge 604 is placed at a certain end of the construction platform 101 (not shown) In addition, when a large amount of space is required, and the waste ink is discharged, the XY axis direction displacement of the print displacement mechanism 601 and the construction displacement mechanism 50 is required to reach the set position, so that the speed efficiency is greatly wasted. Therefore, the waste ink cartridge 604 of the present invention and the ink cartridge 603 are arranged in the same Y-axis linear direction, which can not only reduce the overall installation volume, but the current three-dimensional printer printing speed on the market is 2 to 4 ppm per minute, and the present invention Three-dimensional playing Machine using the algorithm faster printing, and with the reduction of a design load of the motor, with the frequency of the ink jet unit so that the print speed of up to 10ppm, to form a three-dimensional efficiency of the printer can be miniaturized.

As shown in FIG. 2, FIG. 5, and FIG. 6, in the embodiment, the maintenance module 70 The maintenance module 70 includes a moisturizing unit 71 and a doctor unit 72, wherein the moisturizing unit 71 sprays the ink cartridge 603 when the ink cartridge 603 stops the printing operation. The ink head (not shown) is completely sealed to achieve a moisturizing function, and the blade unit 72 provides a synchronous displacement X along with the construction displacement mechanism 50 when the ink cartridge 603 is printed for a period of time or a number of operations. Each of the ink cartridges 603 in the axial direction is reciprocally displaced upward to scrape the source of contamination on the inkjet head of the ink cartridge 603, and may be connected to the cleaning fluid in the cleaning fluid replenishing container 803 through a plurality of conduits 804 to spray the cleaning fluid. The inkjet head is cleaned and cleaned to achieve better print quality.

Referring to FIG. 2, FIG. 5 and FIG. 6, the supply chamber 20 is used for temporarily storing a powder construction material 90, which comprises a plastic powder, a metal powder, a ceramic powder, and the like. The feed chamber 20 can be used to feed the powder construction material 90 by a bottom lift displacement mechanism 201; the print can be utilized when the construction displacement mechanism 50 is displaced over the supply chamber 20. The bottom urging roller 606 of the frame 605 of the module 60 pushes the powder building material 90 above the adjacent construction chamber 30, and then the inkjet of the ink cartridge 603 of the printing module 60. The head ejects a preset fluid (adhesive or color ink) onto the powder building material 90 above the construction chamber 30 to complete a construction layer printing operation of the three-dimensional object, so that the construction chamber 30 can utilize a lifting displacement mechanism 301 descends a space to be replenished with the powder building material 90, and then the bottom urging roller 606 of the frame 605 of the printing module 60 is pushed to push the powder building material 90 to the adjacent construction chamber 30. Replenish the space of the powder construction material 90 Forming another layer of the layer to be printed, and ejecting a predetermined fluid (adhesive or color ink) into the construction chamber by the inkjet head of each of the ink cartridges 603 of the printing module 60 30 above the powder construction material 90, The construction layer printing operation of another three-dimensional object is completed, and the three-dimensional object is piled up in layers by repeating the powder-laying and printing operations. The powder recovery unit 40 collects the powder construction material 90 from the bottom of the frame 605 of the printing module 60 and pushes the powder construction material 90 to the outside of the construction chamber 30, and recycles and reuses the powder construction material 90. The powder recovery unit 40 includes an overflow tank 401 and a recovery collection box 402. The overflow tank 401 is disposed behind the construction chamber 30, and the recovery collection box 402 communicates with the overflow tank 401 to form the powder construction material 90. The remaining materials are used for centralized recycling and reuse.

It can be seen from the above description that the present invention provides a three-dimensional printer with high efficiency and simplified design, and has the following features: manufacturability: a small variety, the customer uses in non-production production, the production quantity is most suitable (below 100PCS), if batch > The 300PCS is still a priority for traditional production technology, so it is an advantage to make a small amount of testing and customization before mass production.

Speed: At present, the printing speed of 3D printers on the market is 2~4ppm per minute; the 3D printer of the present invention is designed to use a faster algorithm to print, and with the design of reducing the load of the motor, the high-frequency ink jet unit can be used to make the printing speed. Up to 10ppm.

Accuracy (Quality): The 3D printer of the present invention is equipped with an inkjet head of 600 dpi or more, and the use of a tension adjusting component can reduce the mechanical precision caused by the life of the mechanism, and the mechanical precision can reach 0.02 mm, and is applied to the medical field, such as a dentist. The tooth mold currently requires an accuracy of at least 0.05 mm and an actual mechanical precision of 0.1 mm.

Strength (Material): The three-dimensional printer of the present invention is combined with a unique nozzle printing adhesive and a powder construction material, and the powder construction material comprises a plastic powder and a metal powder, so that the three-dimensional molded article can reach the full forging strength.

Price: A million-dimensional powder type three-dimensional printer on the market. The invention simplifies the design of the three-dimensional printer, and the market price can be more than half cheaper than the original, so the price will be more competitive, which will contribute to the 3D printer. Popularity.

Market demand: Market demand is driven by the strong policies of governments, entering the universal education market, cultivating students' concept of three-dimensional space from an early age, and increasing personal competitiveness can be expected. In the long run, with the advancement of technology, Many applications in the field of biomedicine are made with 3D printers as the main structure, and even unique products such as artworks can be used in the universal education and biomedical market.

Operationality: At present, the most serious problem of 3D printers is that it is not easy to operate. Therefore, some education training is required before use. The three-dimensional printer of the present invention is combined with simple graphical control, which is simple and clear, and is more capable than the old complicated text description. Increase your interest in use and get started faster.

Size: Compared with the three-dimensional printer in the market, the user must make a large space to place. The size of the three-dimensional printer of the present invention is not only smaller than that of the old printer, but also can be placed on the desktop for operation. In this case, there is no need to specially prepare a large space, and even the average individual can put the 3D printer on the desktop to make the space use more efficient.

Cleanliness: The three-dimensional printer of the present invention has a more rigorous design for this part. The machine is equipped with a suction device and a filter, and the particles and odors generated during the printing process can be adsorbed by the pumping action. The filter in front of the pumping device keeps a clean working space inside the machine, and keeps the environment of the machine table clean and tidy, creating a working area with negative pressure and no environmental pollution.

In summary, the three-dimensional printer of the present case is designed to be externally mounted by the ink supply unit, which is different from the old printer in the interior, and can be greatly reduced in size of the device for operation on the desktop. For the user, there is no need to specially prepare a large space, and even a general self-employed person can operate the three-dimensional printer on the desktop to make the space use more efficient; the three-dimensional printer machine of the invention is provided with a ventilation device and a filter. The particles and odors generated during the printing process can be adsorbed to the filter in front of the pumping device by the pumping action, so that the machine maintains a clean working area and keeps the environment of the machine table clean and tidy. a negative pressure and no environmental pollution working area; the three-dimensional printer of the present invention is equipped with an ink jet head of more than 600 dpi, and the use of a tension adjusting component can reduce the mechanical precision caused by the life of the mechanism; the three-dimensional printer of the present invention will spout the ink cartridge and the Each ink cartridge is set in the same Y-axis linear direction, which not only reduces the overall setting volume, but also uses a faster algorithm. Printed and matched to reduce the motor load design, with high-frequency inkjet unit, its printing speed can reach 10ppm, to form a high-performance miniaturized 3D printer.

This case has been modified by people who are familiar with the technology, but it is not intended to be protected by the scope of the patent application.

10‧‧‧Host body

101‧‧‧Building platform

103‧‧‧ ink supply unit base

105‧‧‧Filter

20‧‧‧Feeding chamber

30‧‧‧Construction chamber

40‧‧‧Ink recovery unit

401‧‧‧ overflow slot

402‧‧‧Recycling collection box

50‧‧‧ Construction of displacement mechanism

60‧‧‧Printing module

601‧‧‧Printing displacement mechanism

602‧‧‧ bearing seat

603‧‧‧Ink

604‧‧‧Spray cartridge

605‧‧‧ architecture pedestal

70‧‧‧Maintenance module

71‧‧‧ moisturizing unit

72‧‧‧Scraper unit

80‧‧‧Continuous ink supply unit

801‧‧‧Color ink refill container

802‧‧‧Adhesive Replenishing Container

803‧‧‧Clean fluid replenishing container

Claims (11)

A three-dimensional printer comprises: a main body, which is provided with a construction platform and is covered with a cover to form a closed construction platform space in the main body, and the main body is provided with a ventilation device and a filter for Discharging the fluid in the closed construction platform space to form a negative pressure working interval, and the main body of the main body is provided with an ink supply unit holder; a supply chamber is constructed on the construction platform for providing a powder The construction material is temporarily stored; a construction chamber is constructed on the construction platform, and the powder construction material is stacked; a displacement mechanism is constructed on the construction platform for relative displacement; a printing module, a group The frame is displaced on the construction displacement mechanism, and is driven by a printing displacement mechanism to carry a reciprocating displacement of a carrier having at least one ink cartridge, and the at least one ink cartridge stores a preset fluid and is provided with an inkjet head. The inkjet head is driven to eject a predetermined fluid to perform molding work on the powder construction material, and the printing displacement mechanism has a fixed structure at one end and a waste ink cartridge for each ink. The inkjet head can pass and maintain displacement in a coaxial straight direction, and the printing module is provided with a pushing roller at the bottom for pushing the powder construction material into the construction chamber; thereby, the construction displacement mechanism Pushing the powder construction material over the construction chamber, and then discharging the predetermined fluid on the powder construction material above the construction chamber by the at least one ink cartridge of the printing module to complete the three-layer forming operation of the stacked printing . The three-dimensional printer of claim 1, wherein the three-dimensional printer is One step comprises a powder recovery unit for collecting and recycling the powder construction material outside the construction chamber. The three-dimensional printer of claim 2, wherein the powder recovery unit comprises an overflow tank and a recovery collection box, the overflow tank is disposed behind the construction chamber, and the collection collection box communicates with the overflow tank, The unused material of the powder construction material is collected and reused in a centralized manner. The three-dimensional printer of claim 1, wherein the three-dimensional printer further comprises a maintenance module, the maintenance module comprising a moisturizing unit and a scraping unit, wherein the moisturizing unit is configured to close the at least one ink cartridge The ink jet head achieves a moisturizing effect, and the doctor unit performs a scraping cleaning operation on the ink jet head of the at least one ink cartridge. The three-dimensional printer of claim 1, wherein the bottom of the supply chamber is provided with a lifting and lowering mechanism for storing the powder construction material in the chamber. The three-dimensional printer of claim 1, wherein the bottom of the construction chamber is provided with a lifting and lowering mechanism for dissipating a space for the powder building material to be replenished. The three-dimensional printer of claim 6, wherein the space of the construction chamber to be replenished with the powder construction material can be moved by the stopper roller at the bottom of the printing module over the supply chamber Powder construction material into the space. The three-dimensional printer of claim 1, wherein the construction displacement mechanism mainly comprises a structural pedestal structure on a sliding sliding rail, and the structural pedestal is driven by a driving belt driven by a driving component, The sliding rail is subjected to a reciprocating displacement movement in a direction, and the driving belt is constructed on a pivot to be controlled by a force adjusting component. The three-dimensional printer of claim 8, wherein the tension adjusting component is formed by a baffle member and an adjusting plate member being locked to the pivot by a locking member, and the baffle member is provided at one end. There is an elastic compressor, the elastic compressor penetrates one end of the adjusting plate member to be pushed, and an adjusting window is provided in the middle of the adjusting plate member for the pivot to pass, and when the baffle member adjusts and moves, the elastic compression The device is compressed to change the original center position of the pivot, and is adjusted to the appropriate position of the opening window, and then the locking member is locked against the positioning position of the baffle member on the adjusting plate member to complete the tension of the driving belt. Adjust the tension adjusted by the component. The three-dimensional printer of claim 1, wherein the three-dimensional printer further comprises a continuous ink supply unit, the continuous ink supply unit comprising a plurality of color ink replenishing containers, a binder replenishing container and a cleaning fluid replenishing container. The ink is placed on the ink supply unit holder and is respectively connected to the at least one ink chamber for storage through a plurality of pipelines. The three-dimensional printer of claim 1, wherein the three-dimensional printer further comprises a maintenance module and a continuous ink supply unit, the maintenance module comprising a moisturizing unit and a scraping unit, wherein the moisturizing unit is used for Sealing the inkjet head of the at least one ink cartridge to achieve a moisturizing effect, the doctor unit performing a scraping cleaning operation on the inkjet head of the at least one ink cartridge, the continuous ink supply unit comprising a plurality of color inks a replenishing container, a binder replenishing container and a cleaning fluid replenishing container are disposed on the ink supply unit holder, and are respectively connected to the at least one ink cartridge through a plurality of pipelines, and the scraper unit can pass through the A plurality of pipelines are connected to flow through the cleaning fluid replenishing container, and the cleaning fluid is ejected to perform cleaning and cleaning operations on the at least one inkjet head.