Full-automatic printing system and method based on additive manufacturing

Abstract

The invention provides a full-automatic printing system and method based on additive manufacturing, and belongs to the technical field of additive manufacturing. A transfer system and a transfer system are arranged on the basis of a forming system, and a transfer channel is formed between the transfer system and the transfer system; the transfer system provides components needed by pretreatment work for the transfer system through the transfer channel, the transfer system receives the components moved out by the transfer system through the transfer channel, automatic transfer of new scraper holders, base materials, parts and / or old scraper holders is achieved, and therefore automatic operation of the pretreatment work is achieved; and the forming system is cleaned through the cleaning assembly, and the technical problem that existing manual cleaning causes harm to human health is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of additive manufacturing, and relates to an unmanned fully automatic printing technology, and specifically to a fully automatic printing system and method based on additive manufacturing. Background Art

[0002] Additive manufacturing is a technology based on the discrete-accumulation principle, which uses the method of gradually accumulating materials to manufacture physical parts. From the early rapid prototyping technology to the current widespread application, additive manufacturing technology has been applied in the design and manufacturing fields such as jewelry design, footwear design and manufacturing, industrial design, architectural design, engineering design and construction, automobile design and manufacturing, as well as medical fields such as aerospace and dentistry. Therefore, it has gradually become a trend to process parts through additive manufacturing. It can not only perform 3D printing processing on batches of small parts, but also can be used to replace the original subtractive, casting and other processing methods for 3D printing of parts.

[0003] At present, the printing method of additive manufacturing equipment requires a lot of pre-processing work, including scraper replacement, substrate replacement, galvanometer maintenance, and gas washing and other preparatory work; each additive manufacturing equipment needs to perform pre-processing work once it prints, and the gas washing time accounts for most of the pre-processing time. In addition, after the parts are printed, the forming chamber and the powder in the forming chamber need to be cleaned. After the cleaning is completed, the parts need to be removed and replaced with new substrates. This process is basically completed through manual intervention. On the one hand, manual processing is time-consuming and affects printing efficiency; on the other hand, the cleaning of the forming chamber and the powder in the forming chamber is very harmful to human health. Summary of the invention

[0004] As described in the above background technology, the pre-processing work of additive manufacturing in the prior art is basically completed through manual intervention, and there are technical problems such as low printing efficiency and great harm to human health during the powder cleaning process. To solve this technical problem, the present invention proposes a fully automatic printing system and method based on additive manufacturing.

[0005] The present invention forms a transfer channel between the transfer system and the transfer system by setting up a transfer system and a transfer system. The transfer system provides the transfer system with the parts required for pre-processing through the transfer channel, and the transfer system receives the parts removed from the transfer system through the transfer channel, thereby realizing the automatic transfer of new scraper holders, substrates, parts and old scraper holders, replacing the existing manual pre-processing work and improving the printing efficiency of parts. At the same time, a cleaning component is set in the transfer bin, and the forming system is cleaned by the cleaning component, thereby avoiding the harm to human health caused by the existing manual cleaning. The present invention solves the technical problems of low printing efficiency and great harm to human health in the powder cleaning process in the prior art.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The fully automatic printing system based on additive manufacturing of the present invention includes a forming system, a transport system and a transfer system;

[0008] A transfer channel is formed between the transfer system and the transfer system, and the transfer system provides the transfer system with components required for pre-treatment work through the transfer channel, and the transfer system receives components removed from the transfer system through the transfer channel; the components required for pre-treatment work include new scraper holders and / or substrates; the components removed from the transfer system include spare parts and / or old scraper holders;

[0009] The transfer system includes a transfer bin, a first driving component that drives the transfer bin to move, and a cleaning component and a fixture component placed in the transfer bin, and a transfer channel is formed between the transfer bin and the transfer system; a forming position and a transfer position are provided in the forming system, and the first driving component drives the cleaning component and the fixture component to translate between the forming position and the transfer position through the transfer bin;

[0010] The fixture assembly is used to clamp the components required for the pre-processing work and the components removed from the transfer system, and under the drive of the transfer bin, transfer the components required for the pre-processing work from the transfer system to the transfer position, and then transfer them from the transfer position to the forming position, and transfer the components removed from the transfer system from the forming position to the transfer position, and then transfer them from the transfer position to the transfer system;

[0011] The cleaning component is used to move to the forming position driven by the transfer bin to clean the forming system;

[0012] The forming system is used to print parts at a forming position.

[0013] It is further defined that the transfer system also includes a bottom telescopic shield disposed at the bottom of the transfer bin, and the bottom telescopic shield is used to seal between the transfer bin and the forming system.

[0014] It is further defined that the transfer system also includes a forming chamber sealing door arranged on a side facing the transfer channel.

[0015] It is further defined that the cleaning assembly includes a parts spray cleaning assembly, a powder collecting pipeline and a spray air source pipe, the spray air source pipe is connected to the parts spray cleaning assembly, the interface of the parts spray cleaning assembly and the interface of the powder collecting pipeline are both placed in the transfer bin, and driven by the transfer bin, translate between the forming position and the transfer position.

[0016] It is further defined that the transfer system also includes a top telescopic shield disposed on the top of the transfer bin, and when the transfer bin is located at the forming position, the top telescopic shield is used to protect the galvanometer assembly disposed on the top of the forming system.

[0017] It is further defined that a lens blowing air inlet pipe and a lens blowing air outlet pipe are connected to the top telescopic shield, and the lens blowing air inlet pipe is communicated with the lens blowing air outlet pipe, and the lens blowing air inlet pipe and the lens blowing air outlet pipe respectively spray and clean the galvanometer assembly when the transfer bin is in the forming position.

[0018] It is further defined that the clamp assembly includes a first clamp, a second clamp, and a second driving assembly for driving the first clamp and the second clamp to move;

[0019] The first clamp and the second clamp cooperate to clamp the components required for pre-processing work and the components removed from the transfer system.

[0020] It is further defined that the transfer system includes a transfer vehicle and a transfer vehicle Z-moving member installed on the transfer vehicle, and the transfer vehicle Z-moving member is used to lift components required for pre-processing work, or to lower components moved out of the transfer system.

[0021] It is further defined that the transfer system also includes a transfer vehicle sealed bin installed above the transfer vehicle, the Z-axis moving part of the transfer vehicle is placed in the transfer vehicle sealed bin, and the transfer vehicle sealed bin is used to accommodate components required for pre-processing work or components moved out of the transfer system; a transfer vehicle sealed door is provided on the side of the transfer vehicle sealed bin facing the transfer channel.

[0022] It is further defined that the forming system includes a screw locking assembly located at the forming position, and the screw locking assembly is used to disassemble and install the scraper frame; the clamp assembly is also used to clamp the old scraper frame and the new scraper frame, and under the drive of the transfer bin, the new scraper frame is transferred from the transfer system to the transfer position, and then transferred from the transfer position to the scraper frame installation position at the forming position, the scraper frame is replaced by the screw locking assembly, and the replaced old scraper frame is transferred from the forming position to the transfer position under the drive of the transfer bin, and then transferred from the transfer position to the transfer system.

[0023] It is further defined that the forming system further comprises a forming platform and a rotary pull-down assembly connected to the forming platform, wherein the forming platform is used to place the substrate kit; the rotary pull-down assembly is connected to the substrate kit to fasten the substrate kit;

[0024] The substrate set is formed by stacking a plurality of substrates, and a positioning piece is arranged between two adjacent substrates; the positioning piece is used for positioning when the substrates are stacked.

[0025] The fully automatic printing method based on additive manufacturing of the present invention comprises the following steps:

[0026] Installing and forming the above-mentioned fully automatic printing system based on additive manufacturing;

[0027] Before part printing, the transfer system transfers the substrate to the transfer channel. The transfer channel is opened, and the fixture assembly clamps the substrate and moves it to the transfer bin. The transfer channel is closed, and the fixture assembly clamps the substrate and, driven by the transfer bin, transfers the substrate from the transfer system to the transfer position, and then from the transfer position to the forming position, and stacks it above the forming platform to form a substrate kit.

[0028] After the part is printed, the fixture assembly and the cleaning assembly are transferred from the transfer position to the forming position under the drive of the transfer bin. The cleaning assembly sprays and cleans the forming system. At the same time, the fixture assembly holds the part and is transferred from the forming position to the transfer position under the drive of the transfer bin. The transfer channel is opened, and the fixture assembly transfers the part to the transfer system. The transfer channel is closed, and the transfer system removes the part.

[0029] The transfer system moves the new scraper frame to the transfer channel, the transfer channel is opened, the clamp assembly clamps the new scraper frame and moves it to the transfer bin, the transfer channel is closed, the clamp assembly clamps the new scraper frame and, driven by the transfer bin, transfers the new scraper frame from the transfer position to the scraper frame installation position at the forming position, completing the replacement of the scraper frame in the forming system; the clamp assembly clamps the replaced old scraper frame and, driven by the transfer bin, transfers the old scraper frame from the forming position to the transfer position, and then transfers it from the transfer position to the transfer system, the transfer channel is closed, and the transfer system removes the old scraper frame.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. The present invention is a fully automatic printing system based on additive manufacturing. A transfer system and a transfer system are arranged on the basis of a forming system to form a transfer channel between the transfer system and the transfer system. The transfer system provides the parts required for pre-processing to the transfer system through the transfer channel. The transfer system receives the parts removed by the transfer system through the transfer channel, thereby realizing the automatic transfer of new scraper holders, substrates, parts and / or old scraper holders, replacing the existing manual pre-processing work and improving the printing efficiency of parts. At the same time, a cleaning component is arranged in the transfer bin, and the forming system is cleaned by the cleaning component, thereby avoiding the harm to human health caused by the existing manual cleaning. The present invention realizes automated pre-processing in the additive manufacturing process, and solves the technical problems of low printing efficiency and great harm to human health in the powder cleaning process in the prior art.

[0032] 2. In the present invention, a top telescopic shield is arranged at the top of the transfer bin, and a bottom telescopic shield is arranged at the bottom of the transfer bin, so as to achieve sealing between the transfer bin and the forming system, ensure the sealing condition of the forming system, complete various pre-treatment work under the sealed condition, and reduce the gas washing time.

[0033] 3. In the present invention, the cleaning component includes a lens spray air inlet pipe, a lens spray air outlet pipe, a part spray cleaning component, a powder collecting pipe and a spray air source pipe. The spray air source pipe is used to provide a spray air source to the part spray cleaning component; the part spray cleaning component is used to clean the parts in the forming chamber, and the powder collecting pipe is used to recover the powder cleaned in the forming chamber; the lens spray air inlet pipe is used to clean the galvanometer lens, and the lens spray air outlet pipe is used to recover the powder material cleaned on the lens; so as to realize the automatic cleaning of the parts and lenses in the forming system, and at the same time, the cleaning and powder recovery can be carried out in the closed forming chamber, the parts can be preliminarily or thoroughly cleaned, and the secondary powder cleaning intensity can be reduced or secondary cleaning can be avoided.

[0034] 4. In the present invention, the forming system includes a scraper frame replacement assembly, and the scraper frame replacement assembly includes a screw locking assembly, through which the scraper frame is disassembled and installed to achieve rapid and automatic replacement of the scraper frame.

[0035] 5. In the present invention, the clamp assembly clamps the substrate and, driven by the transfer bin, transfers the substrate to the top of the forming platform at the forming position to form a substrate kit. Multiple substrates can be transferred at one time, reducing the transfer frequency of the substrate and improving the transfer efficiency of the substrate.

[0036] 6. In the present invention, the transfer of parts, substrates, and scraper holders can be completed by using the same transfer system and transfer system, which greatly improves the utilization rate of the transfer system and transfer system and reduces the idle rate.

[0037] 7. The fully automatic printing system based on additive manufacturing of the present invention has a high degree of integration and cooperates with the existing powder conveying technology to realize unmanned fully automatic printing of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of a fully automatic printing system based on additive manufacturing of the present invention;

[0039] Figure 2 is a side view of the forming system;

[0040] Figure 3 This is the schematic diagram of the scraper holder card quick change;

[0041] Figure 4 is a schematic diagram of the fixture assembly;

[0042] Figure 5 Replacement schematic for the scraper of the transfer vehicle;

[0043] Among them, 1-base, 2-Z-moving part of the forming chamber, 3-forming chamber, 4-first rotary pull-down assembly, 5-sealing plate, 6-piston rod seal, 7-substrate positioning pin, 8-substrate kit, 9-powder in the forming chamber, 10-air field outlet, 11-forming chamber sealing plate, 12-galvanometer assembly, 13-galvanometer lens, 14-parts, 15-scraper, 16-second rotary pull-down assembly, 17-powder collection pipeline, 18-injection air source pipe, 19-lens injection air inlet pipe, 20-top telescopic shield, 21-transfer bin, 22-parts injection cleaning assembly, 23-first fixture, 24-first Second clamp, 25-bottom telescopic shield, 26-wind field return air outlet, 27-forming chamber sealing door, 28-transfer vehicle sealing door, 29-transfer vehicle sealing bin, 30-transfer vehicle Z-moving part, 31-transfer vehicle, 32-left powder collecting box, 33-scraper frame, 34-scraper, 35-scraper frame fastening screw, 36-screw locking assembly, 37-powder dropping barrel, 38-front window sealing door, 39-right powder collecting box, 40-scraper frame to be replaced, 41-pin, 42-scraper frame fastening screw to be replaced, 43-linear sliding assembly, 44-transfer vehicle platform, 45-old scraper frame, 46-new scraper frame. DETAILED DESCRIPTION

[0044] The technical solution of the present invention is further explained below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to the implementation modes described below.

[0045] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0046] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore, cannot be understood as limiting the scope of protection of the present invention.

[0047] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0048] The present invention provides a fully automatic printing system based on additive manufacturing, including a forming system, a transfer system and a transfer system; a transfer channel is formed between the transfer system and the transfer system, the transfer system provides the transfer system with components required for pre-processing through the transfer channel, and the transfer system receives the components removed from the transfer system through the transfer channel; the components required for pre-processing include a new scraper frame 46 and / or a substrate; the components removed from the transfer system include a part 14 and / or an old scraper frame 45; the transfer system includes a transfer bin 21, a first drive assembly that drives the transfer bin 21 to move, and a cleaning assembly and a fixture assembly placed in the transfer bin 21, and a transfer bin 21 and the transfer system form a transfer channel between the transfer bin 21 and the transfer system Transfer channel, a forming position and a transfer position are provided in the forming system, and the first driving component drives the cleaning component and the clamp component to translate between the forming position and the transfer position through the transfer bin 21; the clamp component is used to clamp the components required for the pre-processing work and the components removed from the transfer system, and under the drive of the transfer bin 21, the components required for the pre-processing work are transferred from the transfer system to the transfer position, and then from the transfer position to the forming position, and the components removed from the transfer system are transferred from the forming position to the transfer position, and then from the transfer position to the transfer system; the cleaning component is used to move to the forming position driven by the transfer bin 21 to clean the forming system; the forming system is used to print parts 14 at the forming position.

[0049] In the present invention, the first driving component can be any driving member capable of horizontal movement, such as a synchronous pulley, an electric cylinder or a pneumatic cylinder.

[0050] In the present invention, the transfer system further comprises a bottom telescopic shield 25 disposed at the bottom of the transfer bin 21 , and the bottom telescopic shield 25 is used to seal between the transfer bin 21 and the forming system.

[0051] In the present invention, the transfer system further comprises a forming chamber sealing door 27 arranged on one side of the transfer channel, which is used to control the opening or closing of the transfer channel to ensure the environment required by the forming system.

[0052] In the present invention, the cleaning assembly includes a parts spray cleaning assembly 22, a powder collecting pipeline 17 and a spray air source pipe 18. The spray air source pipe 18 is connected to the parts spray cleaning assembly 22. The interface of the parts spray cleaning assembly 22 and the interface of the powder collecting pipeline 17 are both placed in the transfer bin 21, and driven by the transfer bin 21, they translate between the forming position and the transfer position; wherein, the parts spray cleaning assembly 22 and the powder collecting pipeline 17 also have another interface extending outside the transfer bin 21.

[0053] In the present invention, the transfer system further comprises a top telescopic shield 20 disposed on the top of the transfer bin 21. When the transfer bin 21 is located at the forming position, the top telescopic shield 20 is used to protect the galvanometer assembly 12 disposed on the top of the forming system.

[0054] In the present invention, the top telescopic shield 20 is connected with a lens blowing air inlet pipe 19 and a lens blowing air outlet pipe, the lens blowing air inlet pipe 19 is connected with the lens blowing air outlet pipe, and the lens blowing air inlet pipe 19 and the lens blowing air outlet pipe respectively spray and clean the galvanometer assembly 12 when the transfer bin 21 is in the forming position.

[0055] The air source pipe 18 is used to provide the air source for the part spray cleaning assembly 22. The part spray cleaning assembly 22 is distributed along the periphery of the forming chamber 3. The lens spray air inlet pipe 19 is distributed in a separate external area at the top of the forming chamber 3. The top telescopic shield 20 is installed on the periphery of the lens spray air inlet pipe 19. The part spray cleaning assembly 22 is used to clean the part 14 in the forming chamber 3. The powder collecting pipe 17 is used to recover the powder material blown off the part 14.

[0056] Specifically, the top telescopic protective cover 20 and the bottom telescopic protective cover 25 are both accordion covers or structural parts capable of elastic sealing known to those skilled in the art. As a preferred embodiment of the present invention, the top telescopic protective cover 20 and the bottom telescopic protective cover 25 are both accordion covers, and a third driving member is simultaneously or separately provided on the top telescopic protective cover 20 and the bottom telescopic protective cover 25 for driving the top telescopic protective cover 20 and the bottom telescopic protective cover 25 to move, so as to achieve sealing or non-sealing of the transfer bin 21 and the forming system.

[0057] See also Figure 4 In the present invention, the clamp assembly includes a first clamp 23, a second clamp 24 and a second driving assembly for driving the first clamp 23 and the second clamp 24 to move. The first clamp 23 and the second clamp 24 are respectively arranged at Figure 1 The first clamp 23 and the second clamp 24 cooperate to clamp the parts required for pre-processing and the parts removed from the transfer system. Specifically, the second drive assembly is a drive member known to those skilled in the art such as a servo cylinder or a servo electric cylinder.

[0058] In the present invention, the transfer system includes a transfer vehicle 31 and a transfer vehicle Z-moving member 30 installed on the transfer vehicle 31. The transfer vehicle Z-moving member 30 is used to lift components required for pre-processing work, or to lower components removed from the transfer system.

[0059] In the present invention, the transfer system further comprises a transfer vehicle sealed chamber 29 installed above the transfer vehicle 31, and the transfer vehicle Z-direction moving member 30 is placed in the transfer vehicle sealed chamber 29, and the transfer vehicle sealed chamber 29 is used to accommodate the components required for the pre-processing work or the components removed from the transfer system; the transfer vehicle sealed chamber 29 is provided with a transfer vehicle sealed door 28 on the side facing the transfer channel. As a preferred embodiment of the present invention, the transfer vehicle sealed door 28 and the forming chamber sealed door 27 are directly opposite, and when the transfer channel needs to be opened, the transfer vehicle sealed door 28 and the forming chamber sealed door 27 are opened at the same time; when the transfer channel needs to be closed, the transfer vehicle sealed door 28 and the forming chamber sealed door 27 are closed at the same time. In the present invention, the forming system includes a screw locking assembly 36 located at the forming position, and the screw locking assembly 36 is used to disassemble and install the scraper frame 33; the clamp assembly is also used to clamp the old scraper frame 45 and / or the new scraper frame 46, and under the drive of the transfer bin 21, the new scraper frame 46 is transferred from the transfer system to the transfer position, and then transferred from the transfer position to the installation position of the scraper frame 33 at the forming position, the scraper frame 33 is replaced by the screw locking assembly 36, and the replaced old scraper frame 45 is transferred from the forming position to the transfer position under the drive of the transfer bin 21, and then transferred from the transfer position to the transfer system.

[0060] In the present invention, the forming system also includes a forming platform and a rotary pull-down assembly connected to the forming platform. The forming platform is used to place the substrate kit 8; the rotary pull-down assembly is connected to the substrate kit 8, and the rotary pull-down assembly is used to fasten the substrate kit 8 to ensure the stability of the substrate kit 8 during the forming process; the substrate kit 8 is formed by stacking multiple substrates, and a positioning member is provided between two adjacent substrates; the positioning member is used to position the substrate when it is stacked. Among them, the positioning member is a substrate positioning pin 7, a positioning block and other structures. As a preferred embodiment of the present invention, the positioning member is a substrate positioning pin 7. The clamp assembly is used to clamp the substrate and / or part 14. Under the drive of the transfer bin 21, the substrate is transferred from the transfer system to the transfer position, and then from the transfer position to the forming position, and stacked above the forming platform to form the substrate kit 8. At the same time, under the drive of the transfer bin 21, the part 14 is transferred from the forming position to the transfer position, and then from the transfer position to the transfer system.

[0061] In the present invention, the forming system also includes a sealing assembly for sealing the rotary pull-down assembly and the forming platform. The sealing assembly is a sealing plate 5 and / or a piston rod seal 6 (rubber ring or rubber pad, etc.) arranged between the rotary pull-down assembly and the forming platform. The sealing plate 5 is arranged along the horizontal direction of the substrate, and the piston rod seal 6 is arranged along the height direction of the substrate.

[0062] See also Figure 1 and Figure 2In the present invention, the forming system includes a base 1, a forming chamber Z-direction moving part 2, a forming chamber 3, a rotary pull-down assembly, a forming chamber sealing plate 11, a galvanometer assembly 12, a galvanometer lens 13, a scraper 15, a powder dropping barrel 38, a left powder collecting box 32 and a right powder collecting box 39. The forming chamber sealing plate 11 encloses a sealed forming chamber 3, the galvanometer assembly 12 is arranged in the forming chamber 3 and is fixedly connected to the top of the forming chamber sealing plate 11, and the galvanometer lens 13 is installed on the galvanometer assembly 12. When the lens blowing air inlet pipe 19 and the lens blowing air outlet pipe are moved into the forming chamber 3, corresponding to the installation position of the galvanometer lens 13, the base 1 is installed at the bottom of the forming chamber 3, and the forming chamber Z-direction moving part 2 is fixedly connected to the base 1. A substrate positioning pin 7 is provided on the substrate, and multiple substrates are stacked to form a substrate set 8 through the substrate positioning pin 7. The scraper 15 is located above the substrate set 8. The powder dropping barrel 38 extends into the forming chamber 3 and is connected to the scraper 15. The powder 9 in the forming chamber is provided between the substrate set 8 and the forming chamber sealing plate 11. The wind field outlet 10 and the wind field return air port 26 are respectively provided on the opposite sides of the bottom of the forming chamber 3. The wind field outlet 10, the forming chamber 3 and the wind field return air port 26 are connected. The rotary pull-down assembly includes a first rotary pull-down assembly 4 and a second rotary pull-down assembly 16. The first rotary pull-down assembly 4 and the second rotary pull-down assembly 16 are both connected to the substrate set 8, and are used to tighten the substrate during printing to prevent the substrate from loosening. The left powder collecting box 32 and the right powder collecting box 39 are both at the bottom of the forming chamber 3, and are both connected to the forming chamber 3. The Z-direction moving part 2 of the forming chamber lifts the parts or is used to lower the parts.

[0063] In the present invention, the first rotary pull-down assembly 4 and the second rotary pull-down assembly 16 can be driving components for tensioning, such as air cylinders or electric cylinders, which are well known in the art.

[0064] See also Figure 3 The scraper frame quick-change structure includes a scraper frame 40 to be replaced, a pin 41, a fastening screw 42 of the scraper frame to be replaced and a linear sliding assembly 43, wherein the new scraper frame 46 moved into the forming chamber serves as the scraper frame 40 to be replaced, and the scraper 34 to be replaced is installed on the scraper frame 40 to be replaced. In the process of the clamping assembly driving the new scraper frame 46 to move, the pin 41 is used to position the scraper frame 40 to be replaced with the linear sliding assembly 43 when the scraper frame 40 to be replaced moves in the forming chamber. The linear sliding assembly 43 moves along the forming chamber driven by the transfer bin 21, and the fastening screw 42 of the scraper frame to be replaced is used to fix the linear sliding assembly 43 and the scraper frame 40 to be replaced.

[0065] See also Figure 5In the present invention, during the transfer process, the new scraper frame 46 and the old scraper frame 45 are placed on the transfer vehicle platform 44, and the new scraper frame 46 and the old scraper frame 45 slide left and right on the transfer vehicle platform 44 to realize the replacement of the new scraper frame 46 or the old scraper frame 45 by the fixture assembly. The transfer vehicle platform 44 refers to the upper surface of the transfer vehicle Z-direction moving member 30.

[0066] In the present invention, a front viewing window sealing door 38 is provided on the forming chamber sealing plate 11 of the formed forming chamber 3 , so as to facilitate observation of the printing status of the parts 14 in the forming chamber 3 .

[0067] In the present invention, the Z-direction moving member 2 of the forming chamber is moved along the Z-direction by the fourth driving member, and the Z-direction moving member 30 of the transfer vehicle is moved along the Z-direction by the fifth driving member. The Z-direction moving member 2 of the forming chamber and the Z-direction moving member 30 of the transfer vehicle can both be driving members such as cylinders or electric cylinders that are familiar to those skilled in the art.

[0068] exist Figure 1 Among them, A1 is the cleaning powder recovery port of the galvanometer lens 13, which is connected to the lens blowing outlet pipe, B1 is the air inlet for cleaning the lens 13, and is connected to the lens blowing inlet pipe 19; A2 is the air inlet for powder recovery of transfer bin parts, and is connected to the powder collecting pipe 17; B2 is the air outlet for powder recovery of lens transfer parts, and is connected to the parts blowing cleaning component 22.

[0069] The present invention also provides a fully automatic printing method based on additive manufacturing, comprising the following steps:

[0070] Installing and forming the above-mentioned fully automatic printing system based on additive manufacturing;

[0071] Before the part 14 is printed, the transfer system transfers the substrate to the transfer channel, the transfer channel is opened, the clamp assembly clamps the substrate and moves it into the transfer bin 21, the transfer channel is closed, the clamp assembly clamps the substrate and driven by the transfer bin 21, transfers the substrate from the transfer system to the transfer position, and then transfers it from the transfer position to the forming position, and stacks it above the forming platform to form a substrate set 8;

[0072] After the printing of the part 14 is completed, the fixture assembly and the cleaning assembly are both transferred from the transfer position to the forming position under the drive of the transfer bin 21, the cleaning assembly sprays and cleans the forming system, and at the same time, the fixture assembly clamps the part 14 and is transferred from the forming position to the transfer position under the drive of the transfer bin 21, the transfer channel is opened, the fixture assembly transfers the part 14 to the transfer system, the transfer channel is closed, and the transfer system removes the part 14;

[0073] Before or after the printing of part 14 is completed, the transfer system moves the new scraper frame 46 to the transfer channel, the transfer channel is opened, the clamp assembly clamps the new scraper frame 46 and moves it to the transfer bin 21, the transfer channel is closed, the clamp assembly clamps the new scraper frame 46 and, driven by the transfer bin 21, transfers the new scraper frame 46 from the transfer position to the installation position of the scraper frame 33 at the forming position, and completes the replacement of the scraper frame 33 in the forming system; the clamp assembly clamps the replaced old scraper frame 45, and, driven by the transfer bin 21, transfers the old scraper frame 45 from the forming position to the transfer position, and then transfers it from the transfer position to the transfer system, the transfer channel is closed, and the transfer system removes the old scraper frame 45.

[0074] The fully automatic printing method based on additive manufacturing of the present invention includes powder cleaning and recycling, galvanometer lens 13 cleaning, parts 14 transfer, substrate replacement, Z-moving part 2 cleaning of the forming chamber, replacement of the scraper holder 33, scraper alignment and substrate thickness recording.

[0075] Step S2 is specifically as follows:

[0076] Powder cleaning and recovery: After the printing of part 14 is completed, part 14 is lowered to below the forming platform through the Z-direction moving part 2 of the forming chamber, the transfer bin 21 is moved to just above the Z-direction moving part 2 of the forming chamber (at position A), the bottom telescopic shield 25 moves down to form a seal with the forming chamber sealing plate 11, the top telescopic shield 20 moves up to form a seal with the galvanometer assembly 12, the powder recovery port A2 and the air inlet B2 channels are opened, and after stabilization, the Z-direction moving part 2 of the forming chamber rises, while the part is rising, the blowing cleaning assembly 22 and the powder collecting pipe 17 are cleaned and the powder is recovered, and it stops when it rises to the position of the clamp assembly, the first rotary pull-down assembly 4 and the second rotary pull-down assembly 16 are both released, the clamp assemblies move towards each other to clamp the part 14, the Z-direction moving part 2 of the forming chamber is lowered to an appropriate position below the forming platform, the first rotary pull-down assembly 4 and the second rotary pull-down assembly 16 clamp the remaining substrates, and the powder recovery port A2 and the air inlet B2 channels are closed.

[0077] Cleaning of the galvanometer lens 13: After the powder cleaning and recovery is completed, the powder recovery port A2 and the air inlet B2 are closed, the powder recovery port A1 for lens 13 cleaning and the air inlet B1 for lens 13 cleaning are opened, and the cleaning and powder recovery of the galvanometer lens 13 are started until the powder of the galvanometer lens 13 is cleaned and stopped.

[0078] Transfer of part 14: After the powder is cleaned, the top telescopic shield 20 moves down and the bottom telescopic shield 25 moves up, the sealing process is canceled, and the transfer bin 21 is moved to the initial position (B), that is, the transfer position, the bottom telescopic shield 25 moves down to form a seal with the forming chamber sealing plate 11, the top telescopic shield 20 moves up to form a seal with the galvanometer assembly 12, the forming chamber sealing door 27 is opened to E, the transfer vehicle sealing door 28 is opened to G, the transfer channel is opened, and the transfer vehicle 31 moves to C directly below the transfer bin 21, the transfer vehicle Z-moving part 30 rises to completely support the part 14, the fixture assembly moves to opposite sides until the part 14 is released, the transfer vehicle Z-moving part 30 drops to the lowest point, the transfer vehicle 31 leaves the forming system, the forming chamber sealing door 27 and the transfer vehicle sealing door 28 are both closed, that is, the transfer channel is closed, and the transfer of part 14 is completed.

[0079] Substrate replacement: the forming chamber sealing door 27 is opened to E, the transfer vehicle sealing door 28 is opened to G, the transfer channel is opened, the transfer vehicle 31 moves to C directly below the transfer warehouse 21, the transfer vehicle Z-direction moving part 30 rises to the bottom substrate kit 8, the clamp assembly clamps the substrate kit 8, the transfer vehicle Z-direction moving part 30 descends, and after the transfer vehicle 31 leaves the forming system, the forming chamber sealing door 27 and the transfer vehicle sealing door 28 are both closed, that is, the transfer channel is closed; the transfer warehouse 21 moves to directly above the forming chamber Z-direction moving part 2, the forming chamber Z-direction moving part 2 rises to the clamp until it supports the substrate kit 8, the clamp assembly moves to the opposite sides until it is released, the forming chamber Z-direction moving part 2 descends to below the forming platform, the transfer warehouse 21 moves to the initial position B, the bottom telescopic cover 25 moves down to form a seal with the forming chamber sealing plate 11, and the top telescopic cover 20 moves up to form a seal with the galvanometer assembly 12, and the substrate replacement is completed.

[0080] Cleaning of the Z-direction moving part 2 in the forming chamber: the transfer bin 21 moves alone to the top of the Z-direction moving part 2 in the forming chamber, opens the powder recovery port A2 and the air inlet B2 channel, raises the Z-direction moving part 2 in the forming chamber, and cleans the Z-direction moving part 2 in the forming chamber alone and recovers the powder.

[0081] Replacement of the scraper frame 33: The sealing door 27 of the forming chamber is opened, the scraper frame 33 is moved to the top of the screw locking assembly 36, the screw locking assembly 36 loosens the fastening screws 42 of the scraper frame to be replaced, and after the scraper frame 33 is moved to the top of the Z-direction moving part 2 of the forming chamber, the transfer bin 21 is moved to the top of the Z-direction moving part 2 of the forming chamber, the clamp assembly clamps the scraper frame 33, and the transfer bin 21 moves to the initial position B; see Figure 5, the old scraper frame 45 is placed on the transfer vehicle platform 44, the transfer vehicle platform 44 slides, and the new scraper frame 46 is replaced on the clamp assembly. The forming chamber sealing door 27 is closed, the transfer bin 21 moves to the top of the Z-direction moving part 2 of the forming chamber, and the clamp assembly moves to the opposite sides until the new scraper frame 46 is released. The transfer bin 21 moves to the initial position B, and the new scraper frame 46 moves to the position of the screw locking assembly 36. The scraper frame fastening screws 35 are tightened by the screw locking assembly 36 to complete the replacement of the scraper frame 33.

[0082] Scraper alignment and substrate thickness recording: When the substrate set 8 is set or after the part 14 is taken out, the distance sensor can record the distance L from all substrate sets 8 clamped by the Z-direction moving part of the forming chamber to the upper surface of the forming chamber 3, and transmit the minimum value L1 of this parameter to the controller. The controller makes a judgment. If the judgment result is that the distance L1-a (a is the position from the blade of the scraper holder 33 to the upper surface of the substrate set 8) needs to be raised for alignment, and the average value of two adjacent times can be used to calculate the thickness b of the substrate set 8.

[0083] The above content is only used to illustrate the technical solution of the present invention, rather than to limit the present invention. Although the present invention has been described in detail with reference to the foregoing, a person skilled in the art should understand that the technical solution described above can still be modified, or part or all of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the present invention.

Claims

1. A fully automatic printing system based on additive manufacturing, characterized in that: Including forming system, transfer system and transit system; A transfer channel is formed between the transfer system and the transfer system, and the transfer system provides the transfer system with components required for pre-treatment work through the transfer channel, and the transfer system receives components removed from the transfer system through the transfer channel; the components required for pre-treatment work include new scraper holders (46) and / or substrates; the components removed from the transfer system include parts (14) and / or old scraper holders (45); The transfer system comprises a transfer bin (21), a first driving component for driving the transfer bin (21) to move, and a cleaning component and a clamp component placed in the transfer bin (21); a transfer channel is formed between the transfer bin (21) and the transfer system; a forming position and a transfer position are provided in the forming system; the first driving component drives the cleaning component and the clamp component to translate between the forming position and the transfer position through the transfer bin (21); The clamp assembly is used to clamp the components required for the pre-processing work and the components removed from the transfer system, and under the drive of the transfer bin (21), the components required for the pre-processing work are transferred from the transfer system to the transfer position, and then transferred from the transfer position to the forming position, and the components removed from the transfer system are transferred from the forming position to the transfer position, and then transferred from the transfer position to the transfer system; The cleaning component is used to move to the forming position driven by the transfer bin (21) to clean the forming system; The forming system is used to print a part (14) at a forming position.

2. The fully automatic printing system based on additive manufacturing according to claim 1, characterized in that: The transfer system further comprises a bottom telescopic shield (25) disposed at the bottom of the transfer bin (21), wherein the bottom telescopic shield (25) is used to seal between the transfer bin (21) and the forming system.

3. The fully automatic printing system based on additive manufacturing according to claim 2, characterized in that: The transfer system further comprises a forming chamber sealing door (27) arranged on one side facing the transfer channel.

4. The fully automatic printing system based on additive manufacturing according to claim 2, characterized in that: The cleaning assembly comprises a parts spray cleaning assembly (22), a powder collecting pipeline (17) and a spray air source pipe (18); the spray air source pipe (18) is connected to the parts spray cleaning assembly (22); the interface of the parts spray cleaning assembly (22) and the interface of the powder collecting pipeline (17) are both placed in a transfer bin (21), and are driven by the transfer bin (21) to translate between a forming position and a transfer position.

5. The fully automatic printing system based on additive manufacturing according to claim 4, characterized in that: The transfer system further comprises a top telescopic shield (20) disposed on the top of the transfer bin (21); when the transfer bin (21) is located at the forming position, the top telescopic shield (20) is used to protect the galvanometer assembly (12) disposed on the top of the forming system.

6. The fully automatic printing system based on additive manufacturing according to claim 5, characterized in that: The top telescopic shield (20) is connected with a lens blowing air inlet pipe (19) and a lens blowing air outlet pipe, the lens blowing air inlet pipe (19) is in communication with the lens blowing air outlet pipe, and the lens blowing air inlet pipe (19) and the lens blowing air outlet pipe are used to spray and clean the galvanometer assembly (12) when the transfer bin (21) is located at the forming position.

7. The fully automatic printing system based on additive manufacturing according to any one of claims 1 to 6, characterized in that: The clamp assembly comprises a first clamp (23), a second clamp (24), and a second driving assembly for driving the first clamp (23) and the second clamp (24) to move; The first clamp (23) and the second clamp (24) cooperate to clamp the components required for pre-processing work and the components removed from the transfer system.

8. The fully automatic printing system based on additive manufacturing according to any one of claims 1 to 6, characterized in that: The transfer system comprises a transfer vehicle (31) and a transfer vehicle Z-direction moving part (30) installed on the transfer vehicle (31), wherein the transfer vehicle Z-direction moving part (30) is used to lift components required for pre-processing work or to lower components removed from the transfer system.

9. The fully automatic printing system based on additive manufacturing according to claim 8, characterized in that: The transfer system further comprises a transfer vehicle sealed chamber (29) installed above the transfer vehicle (31), wherein the transfer vehicle Z-moving member (30) is placed in the transfer vehicle sealed chamber (29), and the transfer vehicle sealed chamber (29) is used to accommodate components required for pre-processing work or components removed from the transfer system; A transfer vehicle sealing door (28) is provided on one side of the transfer vehicle sealing compartment (29) facing the transfer channel.

10. The fully automatic printing system based on additive manufacturing according to any one of claims 1 to 6, characterized in that: The forming system comprises a screw locking assembly (36) located at the forming position, and the screw locking assembly (36) is used to disassemble and install the scraper frame (33); the clamp assembly is also used to clamp the old scraper frame (45) and the new scraper frame (46), and under the drive of the transfer bin (21), the new scraper frame (46) is transferred from the transfer system to the transfer position, and then transferred from the transfer position to the installation position of the scraper frame (33) at the forming position, and the scraper frame (33) is replaced by the screw locking assembly (36), and the replaced old scraper frame (45) is transferred from the forming position to the transfer position under the drive of the transfer bin (21), and then transferred from the transfer position to the transfer system.

11. The fully automatic printing system based on additive manufacturing according to any one of claims 1 to 6, characterized in that: The forming system further comprises a forming platform and a rotary pull-down assembly connected to the forming platform, wherein the forming platform is used to place the substrate kit (8); the rotary pull-down assembly is connected to the substrate kit (8) and is used to fasten the substrate kit (8); The substrate set (8) is formed by stacking a plurality of substrates, and a positioning piece is provided between two adjacent substrates; the positioning piece is used for positioning when the substrates are stacked.

12. A fully automatic printing method based on additive manufacturing, characterized in that: The following steps are involved: Installing and forming the fully automatic printing system based on additive manufacturing as claimed in claim 11; Before the part (14) is printed, the transfer system transfers the substrate to the transfer channel, the transfer channel is opened, the clamp assembly clamps the substrate and moves it into the transfer bin (21), the transfer channel is closed, the clamp assembly clamps the substrate and, driven by the transfer bin (21), transfers the substrate from the transfer system to the transfer position, and then transfers it from the transfer position to the forming position, and stacks it above the forming platform to form a substrate kit (8); After the printing of the part (14) is completed, the fixture assembly and the cleaning assembly are both transferred from the transfer position to the forming position under the drive of the transfer bin (21), the cleaning assembly sprays and cleans the forming system, and at the same time, the fixture assembly clamps the part (14) and is transferred from the forming position to the transfer position under the drive of the transfer bin (21), the transfer channel is opened, the fixture assembly transfers the part (14) to the transfer system, the transfer channel is closed, and the transfer system removes the part (14); The transfer system moves the new scraper frame (46) to the transfer channel, the transfer channel is opened, the clamp assembly clamps the new scraper frame (46) and moves it into the transfer bin (21), the transfer channel is closed, the clamp assembly clamps the new scraper frame (46) and, driven by the transfer bin (21), transfers the new scraper frame (46) from the transfer position to the installation position of the scraper frame (33) at the forming position, and completes the replacement of the scraper frame (33) in the forming system; the clamp assembly clamps the replaced old scraper frame (45), and, driven by the transfer bin (21), transfers the old scraper frame (45) from the forming position to the transfer position, and then transfers it from the transfer position to the transfer system, the transfer channel is closed, and the transfer system removes the old scraper frame (45).

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