Automatic 3D printing equipment

Abstract

The invention discloses automatic 3D printing equipment and belongs to the technical field of 3D printing, the automatic 3D printing equipment comprises a forming cabin, the forming cabin is provided with a cylindrical inner space, a forming table assembly is arranged at the inner bottom of the forming cabin, two butt-joint openings are formed in the peripheral side wall of the forming cabin, and the two butt-joint openings are connected with a feeding cabin and a taking-out cabin correspondingly; and a rotating cylinder is arranged in the forming cabin. According to the automatic 3D printing equipment, the forming cabin, the feeding cabin and the taking-out cabin are independently arranged, the taking-out cabin can make contact with the outside independently, the gas environment of the forming cabin and the gas environment of the feeding cabin are not affected, and the taking-out cabin only needs to be subjected to gas washing independently after a product is taken out every time; compared with the operation mode that gas washing needs to be carried out every time printing is carried out in the prior art, the efficiency can be greatly improved, the gas washing operation of the taking-out cabin and the printing operation of the forming cabin can be synchronously carried out, and the printing process can be continuously carried out without waiting.

Description

Technical Field

[0001] The invention belongs to the technical field of 3D printing, and in particular relates to an automated 3D printing device. Background Art

[0002] Additive manufacturing (also known as laser selective melting or metal 3D printing) technology is a new processing method that has emerged in recent years. The raw materials used in this technology are all powders of tens to hundreds of microns. During the forming process, the powder is evenly spread on the forming substrate through the powder supply mechanism and the powder spreading mechanism, and then the powder in the specific geometric shape area of ​​the surface is melted by energy sources such as laser to produce metallurgical bonding, and finally the parts are grown layer by layer to achieve the three-dimensional forming process.

[0003] At present, when performing 3D printing, especially when printing with metal powder as raw material, it is often necessary to create an inert gas environment in the molding chamber to avoid high temperature and dust environment, which may cause the product to oxidize or even explode.

[0004] In order to avoid the above problems, existing 3D printing equipment needs to purge the printing chamber before each printing. However, since the purge process is quite long, it takes a long time to wait, which undoubtedly has a great impact on the printing efficiency and makes it difficult to achieve continuous printing operation.

[0005] To this end, we propose an automated 3D printing device to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the problem in the prior art that the printing equipment needs to wait for a long time for air washing during printing, and to propose an automated 3D printing device.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] An automated 3D printing device comprises a molding chamber, the molding chamber having a cylindrical internal space, a molding table assembly being arranged at the inner bottom of the molding chamber, two docking ports being opened on the peripheral side wall of the molding chamber, the two docking ports being connected to a feeding chamber and a taking-out chamber respectively;

[0009] A rotating cylinder is arranged in the molding chamber, and the outer side wall of the rotating cylinder is in contact with the inner side wall of the molding chamber. A sealing port matching the docking port is provided on the peripheral side wall of the rotating cylinder. The number of the sealing port is set to one. The rotating cylinder can rotate around its axis. When the sealing port and the docking port are staggered, the interior of the molding chamber remains airtight. When the sealing port is aligned and connected with one of the docking ports, the other docking port remains airtight.

[0010] Preferably, a bearing platform is provided at the bottom of the molding chamber, and a sealing plate is provided below the bearing platform; a strip-shaped slide groove is provided on the bearing platform, and the molding table assembly is slidably arranged in the slide groove, and the two docking ports are symmetrically arranged about the axis of the molding chamber, and the slide groove is arranged along the connecting direction of the two docking ports; a sealing ring is fixedly connected to the inner side wall of the rotating cylinder, and the sealing ring is rotatably connected to the upper end of the sealing plate;

[0011] The sealing plate and the supporting platform are fixedly connected together by a connecting column, so that there is an installation space between the sealing plate and the supporting platform. A driving mechanism is provided in the installation space, and the driving mechanism is used to simultaneously drive the rotating cylinder and the forming table assembly, so that when the sealing port rotates toward one of the docking ports, the forming table assembly slides toward the direction of the docking port.

[0012] Preferably, the driving mechanism includes a gear rotatably installed in the installation space, a gear ring is fixedly connected to the inner wall of the rotating cylinder, and a rack is fixedly connected to the lower end of the forming table assembly. The gear is meshed with the gear ring and the rack at the same time. When the gear rotates, it drives the gear ring to drive the rotating cylinder to rotate, and at the same time drives the rack to drive the forming table assembly to move.

[0013] Preferably, the number of the connecting columns is set to two groups, and the two connecting columns are respectively arranged at both ends of the rack to limit the movement range of the rack.

[0014] Preferably, the position of the rack is lower than that of the gear, and the upper half of the teeth of the rack meshes with the lower half of the teeth of the gear.

[0015] Preferably, two sliding columns are connected between the forming table assembly and the rack, the sliding columns are fitted with the side walls of the sliding groove mouth, and the bottom side wall of the rack is fitted with the upper side wall of the sealing plate, the upper end of the sealing plate is fixedly connected to a limiting block, and the limiting block is fitted with the side wall of the rack away from the teeth.

[0016] Preferably, the forming table assembly includes a bottom plate, the sliding column is fixedly connected to the lower side wall of the bottom plate, a sliding plate is slidably connected to the upper end of the bottom plate, the sliding direction of the sliding plate is consistent with the opening direction of the sliding groove, and a control assembly for driving the sliding plate to move is arranged on the bottom plate;

[0017] When the sealing port is aligned with one of the docking ports, the bottom plate moves to a position close to the docking port, and the sliding plate is driven to extend outward from the docking port by the control component.

[0018] Preferably, both ends of the sliding plate are bent downward to form abutment portions, the lower ends of the abutment portions are affixed to the upper side walls of the bottom plate, the middle of the bottom plate is fixedly connected to a fixing seat, electromagnets are respectively installed on both sides of the fixing seat, and electromagnetic adsorption areas matching the electromagnets are respectively provided on the two abutment portions, so that when the electromagnets are energized, they can act on the electromagnetic adsorption areas to drive the sliding plate to move.

[0019] Preferably, the fixing seat is provided with a through hole along the direction of the sliding groove, a sliding rod is slidably arranged in the through hole, and both ends of the sliding rod are respectively fixedly connected to the abutting portion;

[0020] A plurality of return springs are fixedly connected between the abutting portion and the fixing seat. When the sliding plate is located in the middle of the bottom plate, the return springs are in an original length state.

[0021] Preferably, a switch for controlling the electromagnet is fixedly mounted on the side wall of the connecting column close to the rack. When the rack drives the bottom plate to move toward a docking port on one side, the rack acts on the switch to energize the corresponding electromagnet, thereby driving the sliding plate to extend outward from the docking port.

[0022] To sum up, the technical effects and advantages of the present invention are as follows: the automated 3D printing equipment, by independently arranging the molding chamber, feeding chamber and taking-out chamber, can make the taking-out chamber contact with the outside world alone without affecting the gas environment of the molding chamber and the feeding chamber. It is only necessary to purge the taking-out chamber separately after each product is taken out. Compared with the prior art: the operation mode of purge is required for each printing, the efficiency can be greatly improved. The purge operation of the taking-out chamber and the printing operation of the molding chamber can be carried out simultaneously, so that the printing process can continue without waiting.

[0023] At the same time, the present application sets up a driving mechanism and a control component, and sets the switch of the control component on a connecting column used to limit the movement of the rack. The entire process of opening and closing the sealing door, moving the bottom plate close to the docking port, and sliding the sliding plate out of the docking port can be realized by controlling the driving motor, with a high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the positional relationship between the rotating cylinder and the molding chamber in the present invention;

[0026] Figure 3 The internal structure of the present invention is shown in FIG. Figure 1 ;

[0027] Figure 4 The internal structure of the present invention is shown in FIG. Figure 2 ;

[0028] Figure 5 for Figure 3 Schematic diagram of the decomposition structure in;

[0029] Figure 6 It is a structural schematic diagram of the forming table assembly in the present invention;

[0030] Figure 7 It is a schematic diagram of the working state of the present invention.

[0031] In the figure: 1, forming chamber; 11, docking port; 12, bearing platform; 121, slide slot; 13, sealing plate; 14, connecting column; 141, switch;

[0032] 2. Feeding cabin; 3. Removal cabin;

[0033] 4. Forming table assembly; 41. Bottom plate; 42. Sliding plate; 421. Abutment portion; 43. Fixed seat; 431. Electromagnet; 44. Sliding rod; 441. Return spring;

[0034] 5. Rotating cylinder; 51. Sealing port; 52. Sealing ring;

[0035] 6. gear; 61. gear ring; 62. rack; 621. slide column; 622. limit block. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] like Figure 1-Figure 7 As shown, an automated 3D printing device includes a molding chamber 1, the molding chamber 1 has a cylindrical internal space, a molding table assembly 4 is arranged at the inner bottom of the molding chamber 1, and two docking ports 11 are opened on the peripheral side wall of the molding chamber 1, and the two docking ports 11 are respectively connected to the feeding chamber 2 and the taking-out chamber 3.

[0038] Among them, the forming table assembly 4 is used to place the substrate and the forming cylinder, and the powder bin, powder spreading scraper, optical components, gas circulation system and powder feeding system are installed in the forming cabin 1. When in use, first fix the forming cylinder on the forming table assembly 4, and then fix the substrate in the forming cylinder, wherein the powder bin of the powder feeding system is roughly flush with the upper end of the forming cylinder, and use the powder spreading scraper to move back and forth to spread the metal powder on the substrate, and spread a layer, that is, melt and solidify at high temperature under the optical component to form a layer of product, and then use the lifting mechanism inside the forming cylinder to lower the height of the substrate by one layer, and spread the powder layer by layer in turn to form the product, and finally print it into a product, and then completely push the substrate out of the forming cylinder, and clean up the excess metal powder.

[0039] The feeding chamber 2 is mainly used to store substrates, and a conveying mechanism is provided inside the feeding chamber to input the substrates into the molding chamber 1; the taking-out chamber 3 is mainly used to take out products, and an output mechanism is provided inside the taking-out chamber to take out the products from the molding chamber 1. The disassembly and installation of the substrates are realized by the robotic arms installed in the molding chamber 1 and the taking-out chamber 3, respectively.

[0040] A gas washing mechanism is provided in the feed chamber 2, the molding chamber 1 and the removal chamber 3 for inputting an inert gas, such as argon, etc., so as to discharge the original air and enable the printing operation to be carried out in an inert gas environment, so as to improve safety.

[0041] By independently arranging the molding chamber 1, the feeding chamber 2 and the taking-out chamber 3, the taking-out chamber 3 can be in contact with the outside world independently without affecting the gas environment of the molding chamber 1 and the feeding chamber 2. It is only necessary to purge the taking-out chamber 3 independently after each product is taken out. Compared with the prior art: the operation mode of purge is required every time printing is performed, the efficiency can be greatly improved. The purge operation of the taking-out chamber 3 and the printing operation of the molding chamber 1 can be performed simultaneously, so that the printing process can continue without waiting.

[0042] At the same time, the feed chamber 2 is separated from the molding chamber 1, which can prevent the metal powder in the printing process from contaminating the substrate in the feed chamber 2.

[0043] A rotating drum 5 is arranged in the molding chamber 1, and the axis of the rotating drum 5 is arranged vertically. The outer wall of the rotating drum 5 fits with the inner wall of the molding chamber 1, and the two can remain airtight. A sealing port 51 matching the docking port 11 is provided on the peripheral side wall of the rotating drum 5, that is, the docking port 11 and the sealing port 51 correspond in size and position, and can completely overlap. And the number of the sealing port 51 is set to one, and the rotating drum 5 can rotate around its axis. When the sealing port 51 is misaligned with the docking port 11, the interior of the molding chamber 1 remains airtight. When the sealing port 51 is aligned and connected with one of the docking ports 11, the other docking port 11 remains airtight, so that the molding chamber 1 can only be connected with one of the feed chamber 2 and the removal chamber 3. The feed chamber 2 and the removal chamber 3 are always kept in a disconnected state.

[0044] Specifically, the present application further optimizes the opening and closing method of the door of the molding cabin 1. In the prior art, before each printing, it is necessary to open the sealed door between the molding cabin 1 and the feeding cabin 2 to transport the substrate into the molding cabin 1. After the printing is completed, it is necessary to open the sealed door between the molding cabin 1 and the removal cabin 3 to take the molded product out of the molding cabin 1. In this process, it is necessary to control the opening and closing of different sealing doors back and forth, and the operation process is cumbersome. However, the present application is to adjust the position of the sealing port 51 opened on the rotating cylinder 5 by setting a method capable of rotating the rotating cylinder 5, and utilize the misalignment or overlap between the sealing port 51 and the docking port 11 to realize the automatic opening and closing of the cabin door. This method not only has a simple operation process, but also structurally avoids the situation where the molding cabin 1 is simultaneously connected to the removal cabin 3 and the feeding cabin 2, which can effectively reduce the occurrence of operational errors.

[0045] In one embodiment of the present application, a carrying platform 12 is provided at the bottom of the molding chamber 1, and a sealing plate 13 is provided below the carrying platform 12. The carrying platform 12 and the sealing plate 13 are both circular, and the radius is smaller than the radius of the rotating cylinder 5, so that the rotating cylinder 5 can be wrapped around the outside of the carrying platform 12 and the sealing plate 13.

[0046] The carrier 12 is provided with a strip-shaped slide slot 121, and the forming table assembly 4 is slidably arranged in the slide slot 121, and the two pairs of interfaces 11 are symmetrically arranged about the axis of the forming chamber 1. The slide slot 121 is arranged along the connecting direction of the two pairs of interfaces 11. In other words, the forming table assembly 4 can be respectively approached or away from the two interfaces 11 by sliding in the slide slot 121, thereby reducing the difficulty of loading and unloading materials.

[0047] Furthermore, a sealing ring 52 is fixedly connected to the inner wall of the rotating cylinder 5, and the sealing ring 52 is rotatably connected to the upper end of the sealing plate 13. Specifically, the rotating cylinder 5 is a cylindrical structure with a closed upper portion and an open lower portion, and the sealing plate 13 seals the open portion of the rotating cylinder 5 by cooperating with the sealing ring 52.

[0048] Among them, the sealing plate 13 and the supporting platform 12 are fixedly connected together by a connecting column 14, so that there is an installation space between the sealing plate 13 and the supporting platform 12. A driving mechanism is provided in the installation space, and the driving mechanism is used to simultaneously drive the rotating cylinder 5 and the forming table assembly 4, so that when the sealing port 51 rotates toward one of the docking ports 11, the forming table assembly 4 slides toward the direction of the docking port 11.

[0049] Specifically, the initial position of the sealing port 51 is between the two docking ports 11, and when the rotating drum 5 rotates 90 degrees in the forward or reverse direction, it will be connected with one of the docking ports 11. By setting a driving mechanism, the movement of the rotating drum 5 and the movement of the forming table assembly 4 are linked together. In this way, when the sealing port 51 is connected with the docking port 11, the forming table assembly 4 can automatically move toward the position of the docking port 11, which is convenient for taking or loading materials.

[0050] At the same time, when the rotating cylinder 5 is reset, the forming table assembly 4 will also be reset to the initial middle position to prepare for the next docking.

[0051] The present application can reduce the setting of the driving source by setting a driving mechanism, especially, it can coordinate the movement of the rotating cylinder 5 with the movement of the forming table assembly 4, so that when the corresponding docking port 11 is in an open state, the forming table assembly 4 will automatically approach the docking port 11 to facilitate loading and unloading.

[0052] In one of the embodiments of the present application, the driving mechanism includes a gear 6 rotatably installed in the installation space, a support rod is provided below the base plate 41, a driving motor is fixedly installed below the base plate 41, and the output end of the driving motor is transmission-connected to the gear 6. The driving motor adopts a servo motor, which can control the gear 6 to rotate forward or reverse a certain number of times to achieve precise control.

[0053] A toothed ring 61 is fixedly connected to the inner wall of the rotating cylinder 5. The toothed ring 61 is an inner toothed ring and can be a half toothed ring or a full toothed ring. A rack 62 is fixedly connected to the lower end of the forming table assembly 4. The rack 62 is a straight bar, and the length direction of the rack 62 is parallel to the direction of the slide slot 121.

[0054] The gear 6 is meshed with the gear ring 61 and the rack 62 at the same time. When the gear 6 rotates, it drives the gear ring 61 to drive the rotating cylinder 5 to rotate, and at the same time drives the rack 62 to drive the forming table assembly 4 to move. It should be noted that the initial position of the sealing port 51 is located on the side of the rack 62 away from the gear 6. Figure 3As shown, when the gear 6 rotates clockwise, it drives the rotating cylinder 5 to rotate clockwise, so that the sealing port 51 rotates toward the docking port 11 at the feed chamber 2. At the same time, the gear 6 drives the rack 62 to move to the right, so that the forming table assembly 4 also moves toward the docking port 11 at the feed chamber 2. And vice versa.

[0055] The number of connecting columns 14 is set to two groups, and the two connecting columns 14 are respectively set at the two ends of the rack 62 to limit the movement range of the rack 62. Since the rack 62 and the gear ring 61 are connected together through the gear 6, the movement range of the rack 62 is limited by the connecting columns 14, which is equivalent to limiting the rotation angle of the rotating cylinder 5, so that the docking accuracy between the sealing port 51 and the docking port 11 is improved, and there will be no misalignment, so that the connection channel between the molding chamber 1 and the outside is unblocked.

[0056] In order to make the rack 62 slide stably, two slide posts 621 are connected between the forming table assembly 4 and the rack 62, the slide posts 621 are in contact with the side walls of the slide slot 121, and the bottom side wall of the rack 62 is in contact with the upper side wall of the sealing plate 13, and the upper end of the sealing plate 13 is fixedly connected to a limit block 622, and the limit block 622 is in contact with the side wall of the rack 62 away from the teeth.

[0057] The position of the rack 62 is lower than that of the gear 6, and the upper half of the teeth of the rack 62 meshes with the lower half of the teeth of the gear 6. With this arrangement, the rack 62 can still mesh with the gear 6 when it moves upward a short distance. In this way, when the molding chamber 1 is deeply cleaned, especially when cleaning between the molding table assembly 4 and the carrier table 12, the molding table assembly 4 can be appropriately moved upward without affecting the meshing between the rack 62 and the gear 6, ensuring that it can be quickly reset after cleaning, reducing the difficulty of maintenance.

[0058] In the present application, the synchronous movement of the rotating cylinder 5 and the forming table assembly 4 is achieved by utilizing the cooperation of the gear 6, the rack 62 and the gear ring 61, and the limitation of the rack 62 is utilized to limit the movement range of the forming table assembly 4 and the rotation angle of the rotating cylinder 5, thereby improving the docking accuracy.

[0059] In one embodiment of the present application, the forming table assembly 4 includes a bottom plate 41, and a slide column 621 is fixedly connected to the lower side wall of the bottom plate 41, connecting the bottom plate 41 with the rack 62. A sliding plate 42 is slidably connected to the upper end of the bottom plate 41, and the base plate, the forming cylinder, etc. are all arranged on the upper end of the sliding plate 42. The sliding direction of the sliding plate 42 is consistent with the opening direction of the slide groove 121. A control component for driving the sliding plate 42 to move is arranged on the bottom plate 41.

[0060] When the sealing port 51 is aligned with one of the docking ports 11 , the bottom plate 41 moves to a position close to the docking port 11 , and the sliding plate 42 is driven by the control assembly to extend outward from the docking port 11 .

[0061] That is to say, in this embodiment, when the sealing port 51 is connected to the docking port 11 and the bottom plate 41 moves to a position close to the docking port 11, the sliding plate 42 can further slide forward along the direction of movement of the bottom plate 41, so that the sliding plate 42 extends outward from the docking port 11, further reducing the difficulty of loading and unloading.

[0062] The two ends of the sliding plate 42 are bent downward to form abutment parts 421. The two abutment parts 421 are distributed along the length direction of the slide slot 121. The lower end of the abutment part 421 is attached to the upper side wall of the bottom plate 41. When the sliding plate 42 moves, the abutment part 421 will act on the upper side wall of the bottom plate 41 to clean up the small amount of metal powder spilled on it. The middle part of the bottom plate 41 is fixedly connected with a fixed seat 43, and the opening direction of the fixed seat 43 is perpendicular to the direction of the slide slot 121. Electromagnets 431 are installed on both sides of the fixed seat 43, and the two electromagnets 431 correspond to the two abutment parts 421. Electromagnetic adsorption areas matching the electromagnets 431 are respectively provided on the two abutment parts 421. The electromagnetic adsorption areas can be permanent magnets or iron sheets, so that when the electromagnets 431 are energized, they can act on the electromagnetic adsorption areas to drive the sliding plate 42 to move. The driving of the sliding plate 42 is achieved by the magnetic field generated by the energization of the electromagnets 431.

[0063] The fixed seat 43 is provided with a through hole along the direction of the slide slot 121, and a sliding rod 44 is slidably arranged in the through hole, and both ends of the sliding rod 44 are respectively fixedly connected to the abutment portion 421. In other words, the sliding plate 42 realizes sliding on the fixed seat 43 through the sliding rod 44 fixedly connected therein, and realizes a limiting effect on its sliding direction.

[0064] A plurality of return springs 441 are fixedly connected between the abutment portion 421 and the fixed seat 43. In order to prevent the return spring 441 from bending, the return spring 441 is sleeved on the outside of the sliding rod 44. When the sliding plate 42 is located in the middle of the bottom plate 41, the return spring 441 is in the original length state. On the one hand, the return spring 441 can position the sliding plate 42 in the middle of the bottom plate 41, so as to control the position of the sliding plate 42 so that the substrate can be stably placed, which is convenient for subsequent printing operations; on the other hand, the return spring 441 can use its stored elastic potential energy to reset the sliding plate 42 after the electromagnet 431 is powered off. In order to prevent the return spring 441 from generating unstable conditions such as up and down vibration under the action of the magnetic field, the material of the return spring 441 can be selected as plastic or other non-metallic materials.

[0065] A switch 141 for controlling the electromagnet 431 is fixedly mounted on the side wall of the connecting column 14 close to the rack 62. The switch 141 is a push-type contact switch. When the switch 141 is pressed, the circuit of the electromagnet 431 is turned on. When the switch 141 loses external force, the circuit of the electromagnet 431 is turned off.

[0066] Specifically, if Figure 4 As shown, the electromagnet 431 on the left side is in the same circuit as the switch 141 on the right side, and the electromagnet 431 on the right side is in the same circuit as the switch 141 on the left side. When the switch 141 on the left side is turned on, the electromagnet 431 on the right side is energized to attract the abutment 421 on the right side, so that the sliding plate 42 moves to the left. When the switch 141 on the right side is turned on, the electromagnet 431 on the left side is energized to attract the abutment 421 on the left side, so that the sliding plate 42 moves to the right.

[0067] Specifically, when the rack 62 drives the bottom plate 41 to move toward the docking port 11 on one side, the rack 62 acts on the switch 141 to energize the corresponding electromagnet 431, thereby driving the sliding plate 42 to extend outward from the docking port 11. In order to avoid interference between the sliding plate 42 and the side wall of the rotating cylinder 5, on the one hand, the width of the sealing port 51 and the docking port 11 is 5-10 mm larger than the width of the sliding plate 42. On the other hand, the rotation angle of the gear 6 can be precisely controlled by the servo motor by increasing the tooth density. When the docking port 11 is completely aligned with the sealing port 51, the circuit of the corresponding electromagnet 431 is turned on, causing the sliding plate 42 to slide outward. Avoid the sliding plate 42 from directly acting on the side wall of the rotating cylinder 5.

[0068] In this embodiment, the switch 141 on the control component is set on the connecting column 14 used to play a limiting role. The switch 141 can be automatically controlled by the movement of the rack 62. The whole process does not need to redesign a complex electric control mechanism. The switch control of the circuit is completely realized by mechanical action, thereby achieving: the sealing port 51 and the docking port 11 overlap with each other to connect the channel. At the same time, the bottom plate 41 moves to drive the sliding plate 42 to move for the first time to approach the position of the docking port 11. When the rack 62 acts on the switch 141, the circuit of the electromagnet 431 is turned on, so that the sliding plate 42 moves for the second time, and the sliding plate 42 extends from the docking port 11 to facilitate loading and unloading operations. The whole process of opening and closing the sealing door, moving the bottom plate close to the docking port, and sliding the sliding plate out of the docking port is completely controlled by the rotation of the servo motor to achieve automatic operation.

[0069] Here’s how it works:

[0070] Firstly, the present application arranges the molding chamber 1, the feeding chamber 2 and the taking-out chamber 3 separately and independently, so that the taking-out chamber 3 can be in contact with the outside world separately without affecting the gas environment of the molding chamber 1 and the feeding chamber 2. It is only necessary to purge the taking-out chamber 3 separately after each product is taken out. Compared with the prior art: the operation mode of purge is required every time printing, the efficiency can be greatly improved. The purge operation of the taking-out chamber 3 and the printing operation of the molding chamber 1 can be carried out simultaneously, so that the printing process can continue without waiting.

[0071] In the initial state, the sealing port 51 is in the middle position. When the gear 6 rotates, the gear 6 drives the rotating cylinder 5 to rotate through the gear ring 61, so that the sealing port 51 rotates toward one of the docking ports 11. At the same time, the gear 6 also drives the bottom plate 41 to move closer to the same docking port 11 through the rack 62. When the sealing port 51 is about to completely overlap with the docking port 11, the rack 62 acts on the switch 141 on the connecting column 14, so that the electromagnet 431 in the opposite direction is energized to generate magnetic field attraction, driving the sliding plate 42 to further move a distance toward the docking port 11, so that the sliding plate 42 extends from the docking port 11, thereby facilitating the acquisition of the substrate from the feed chamber 2, or facilitating the transfer of the product in the molding chamber 1 to the removal chamber. In the whole process, only the drive motor needs to be controlled, and the degree of automation is high, which is conducive to further improving the printing efficiency.

[0072] When resetting is required, the driving motor only needs to be rotated in the opposite direction for the same number of turns, then the electromagnet 431 is powered off, the sliding plate 42 is reset under the action of the reset spring 441, and the gear 6 is rotated in the opposite direction for the same number of turns, so that the rotating cylinder 5 and the bottom plate 41 are reset.

[0073] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automated 3D printing device, comprising a molding chamber (1), characterized in that: The molding chamber (1) has a cylindrical internal space, a molding table assembly (4) is arranged at the inner bottom of the molding chamber (1), two docking ports (11) are provided on the peripheral side wall of the molding chamber (1), and the two docking ports (11) are respectively connected to the feeding chamber (2) and the taking-out chamber (3); A rotating cylinder (5) is arranged in the molding chamber (1), the outer side wall of the rotating cylinder (5) is in contact with the inner side wall of the molding chamber (1), a sealing opening (51) matching the docking port (11) is provided on the peripheral side wall of the rotating cylinder (5), the number of the sealing opening (51) is set to one, the rotating cylinder (5) is capable of rotating around its axis, when the sealing opening (51) and the docking port (11) are staggered, the interior of the molding chamber (1) remains sealed, and when the sealing opening (51) is aligned and connected with one of the docking ports (11), the other docking port (11) remains sealed.

2. The automated 3D printing device according to claim 1, characterized in that: A bearing platform (12) is provided at the bottom of the molding chamber (1), and a sealing plate (13) is provided below the bearing platform (12); a strip-shaped slide groove (121) is provided on the bearing platform (12), and the molding table assembly (4) is slidably arranged in the slide groove (121), and the two docking ports (11) are symmetrically arranged about the axis of the molding chamber (1), and the slide groove (121) is arranged along the connecting direction of the two docking ports (11); a sealing ring (52) is fixedly connected to the inner side wall of the rotating cylinder (5), and the sealing ring (52) is rotatably connected to the upper end of the sealing plate (13); The sealing plate (13) and the bearing platform (12) are fixedly connected together via a connecting column (14), so that an installation space is provided between the sealing plate (13) and the bearing platform (12). A driving mechanism is provided in the installation space, and the driving mechanism is used to simultaneously drive the rotating cylinder (5) and the forming table assembly (4), so that when the sealing port (51) rotates toward one of the docking ports (11), the forming table assembly (4) slides in the direction of the docking port (11).

3. The automated 3D printing device according to claim 2, characterized in that: The driving mechanism comprises a gear (6) rotatably mounted in the mounting space, a gear ring (61) is fixedly connected to the inner wall of the rotating cylinder (5), a rack (62) is fixedly connected to the lower end of the forming table assembly (4), and the gear (6) is meshed with the gear ring (61) and the rack (62) at the same time. When the gear (6) rotates, it drives the gear ring (61) to drive the rotating cylinder (5) to rotate, and at the same time drives the rack (62) to drive the forming table assembly (4) to move.

4. The automated 3D printing device according to claim 3, characterized in that: The number of the connecting columns (14) is set to two groups, and the two connecting columns (14) are respectively arranged at two ends of the rack (62) to limit the movement range of the rack (62).

5. The automated 3D printing device according to claim 3, characterized in that: The position of the rack (62) is lower than that of the gear (6), and the upper half of the teeth of the rack (62) meshes with the lower half of the teeth of the gear (6).

6. The automated 3D printing device according to claim 3, characterized in that: Two slide columns (621) are connected between the forming table assembly (4) and the rack (62); the slide columns (621) are in contact with the side walls of the slide groove (121); the bottom side wall of the rack (62) is in contact with the upper side wall of the sealing plate (13); the upper end of the sealing plate (13) is fixedly connected to a limit block (622); the limit block (622) is in contact with the side wall of the rack (62) away from the teeth.

7. The automated 3D printing device according to claim 6, characterized in that: The forming table assembly (4) comprises a bottom plate (41), the sliding column (621) is fixedly connected to the lower side wall of the bottom plate (41), a sliding plate (42) is slidably connected to the upper end of the bottom plate (41), the sliding direction of the sliding plate (42) is consistent with the opening direction of the sliding groove (121), and a control assembly for driving the sliding plate (42) to move is arranged on the bottom plate (41); When the sealing port (51) is aligned with one of the docking ports (11), the bottom plate (41) moves to a position close to the docking port (11), and the control component drives the sliding plate (42) to extend outward from the docking port (11).

8. The automated 3D printing device according to claim 7, characterized in that: The two ends of the sliding plate (42) are respectively bent downward to form abutment portions (421), the lower end of the abutment portion (421) is attached to the upper side wall of the bottom plate (41), the middle of the bottom plate (41) is fixedly connected with a fixing seat (43), and electromagnets (431) are respectively installed on both sides of the fixing seat (43), and electromagnetic adsorption areas matching the electromagnets (431) are respectively provided on the two abutment portions (421), so that when the electromagnets (431) are energized, they can act on the electromagnetic adsorption areas to drive the sliding plate (42) to move.

9. The automated 3D printing device according to claim 8, characterized in that: The fixing seat (43) is provided with a through hole along the direction of the slide groove (121), a sliding rod (44) is slidably arranged in the through hole, and both ends of the sliding rod (44) are respectively fixedly connected to the abutment portion (421); A plurality of return springs (441) are also fixedly connected between the abutment portion (421) and the fixed seat (43); when the sliding plate (42) is located in the middle of the bottom plate (41), the return springs (441) are in an original length state.

10. The automated 3D printing device according to claim 9, characterized in that: A switch (141) for controlling the electromagnet (431) is fixedly mounted on the side wall of the connecting column (14) near the rack (62); when the rack (62) drives the bottom plate (41) to move toward the docking port (11) on one side, the rack (62) acts on the switch (141) to energize the corresponding electromagnet (431), thereby driving the sliding plate (42) to extend outward from the docking port (11).

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