Rotary 3D printer based on photocuring

Abstract

The invention belongs to the technical field of 3D printing, and discloses a rotary 3D printer based on photocuring, the rotary 3D printer comprises a base and a shell mounted above the base, a first air cylinder, a scraper mechanism and a printing platform are arranged in the shell, the first air cylinder is fixedly mounted at the top of the shell, and the scraper mechanism is fixedly mounted at the bottom of the shell. The printing platform is installed on the top of the base, the scraper mechanism is in transmission connection with the first air cylinder, and the rotation center of the scraper mechanism coincides with the circle center of the printing platform. A square through hole and a circle center groove which communicate with the base are formed in the printing platform, a sealing mechanism is fixedly arranged below the square through hole, and a flow guide mechanism is fixedly arranged below the circle center groove; a delivery outlet is formed in the side wall of the base, and a delivery mechanism is arranged between the printing platform and the delivery outlet. According to the technical scheme, the printing precision and efficiency can be improved, the use environment requirement is lowered, and automatic cleaning of the printing platform is achieved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of 3D printing technology, and particularly relates to a rotary 3D printer based on light curing. BACKGROUND

[0002] The light curing printer is an advanced three-dimensional printing technology, and the product structure mainly comprises a light source, a printing platform and printing pulp and the like. Through the light polymerization of the printing pulp, a digital model can be solidified layer by layer into a three-dimensional object. The light curing printer is divided into floor type and desktop type according to the size. The current main 3D printer on the market adopts a reciprocating structure. The scraper reciprocates on a horizontal guide rail to scrape the printing pulp, and then laser irradiation is performed to solidify the printing pulp into a shape. This way, the printing speed is slow and the efficiency is low. The scraping and return time of the scraper accounts for nearly 80% of the total printing time, and high-speed printing of the product cannot be realized. Since the floor type light curing printer is large in size, it is difficult to clean the printing platform manually. Moreover, the printing pulp is mostly toxic material, and manual cleaning also has certain safety risks. After printing is completed, the printed object is usually separated from the object table and taken out by using a shovel. In this process, the hand and shovel entering the printing area will inevitably bring in dust. The process of shoveling the finished product will also generate debris. The mixing of debris and dust into the printing pulp will affect the accuracy and quality of subsequent printing. SUMMARY

[0003] The present application aims to provide a rotary 3D printer based on light curing to solve the problems existing in the prior art.

[0004] To achieve the above-mentioned purpose, the present application provides a rotary 3D printer based on light curing, which comprises a base and a shell installed above the base. The inside of the shell is provided with a first air cylinder, a scraper mechanism and a printing platform. The first air cylinder is fixedly installed at the top of the shell. The printing platform is installed at the top of the base. The scraper mechanism is in transmission connection with the first air cylinder, and the rotary center of the scraper mechanism coincides with the center of the printing platform. A square through hole and a center slot are formed in the printing platform and are in communication with the base. A sealing mechanism is fixedly arranged below the square through hole. A flow guide mechanism is fixedly arranged below the center slot. An outlet is formed in the side wall of the base. An outlet mechanism is arranged between the printing platform and the outlet.

[0005] Optionally, the scraper mechanism comprises an annular guide rail, a material laying assembly, a guide rail frame, a scraper, a cleaning strip, an intermediate rod, a side rod, a first connecting rod, a fixed support rod, a connecting column, a first motor, a rotating disc and an adapter circular table. The annular guide rail is installed above the base, and a plurality of material laying assemblies are slidably arranged on the annular guide rail. The material laying assemblies are uniformly distributed in the circumferential direction.

[0006] Each paving assembly is fixedly connected by a connecting column near one side of the rotation center, the connecting column is rotatably installed at the center of the printing platform, the paving assembly comprises a guide rail frame slidingly arranged on the annular guide rail, the inner side of the guide rail frame is provided with left, middle and right vertical guide rails, a scraper is slidingly arranged on the middle vertical guide rail of the guide rail frame, the scraper is obliquely arranged relative to the printing platform, two cleaning strips are respectively slidingly arranged on the left vertical guide rail and the right vertical guide rail of the guide rail frame, two long grooves facing the scraper and the printing platform are formed in the cleaning strips, the two long grooves are intercommunicatively arranged, two cleaning brushes are respectively slidingly arranged in each long groove, and side edge rods are fixedly arranged at the upper ends of the two cleaning strips;

[0007] An intermediate rod is fixedly arranged at the upper end of the scraper, and the intermediate rod and the side edge rods at the upper ends of the two cleaning strips are rotatably connected by first connecting rods;

[0008] Two fixed supporting rods are fixedly arranged at the upper end of the guide rail frame, the middle portions of the first connecting rods are rotatably connected with the fixed supporting rods, three intermediate rods in the three paving assemblies are fixedly arranged above a rotating disc, a connecting circular table is rotatably installed on the rotating disc, and the connecting circular table is rotatably connected with the first cylinder.

[0009] Optionally, a first motor is installed at the lower end of the printing platform, and the connecting column is in transmission connection with the first motor.

[0010] Optionally, three through holes are formed in the upper end of the guide rail frame, the intermediate rod is slidingly installed in the through hole in the middle of the upper end of the guide rail frame, and the side edge rods at the upper ends of the two cleaning strips are slidingly installed in the two through holes at the left and right of the upper end of the guide rail frame.

[0011] Optionally, the two cleaning brushes are connected with the bottom of the long groove by springs.

[0012] Optionally, the sealing mechanism comprises a supporting block, a threaded rod, a second sliding block, a sealing plate and a second motor.

[0013] The supporting block is installed at the lower end of the printing platform, a threaded rod that is left-handed in the left half and right-handed in the right half is rotatably arranged in the middle portion of the supporting block, and the threaded rod is driven by a second motor fixedly installed at the lower end of the printing platform.

[0014] Left and right cavities are formed in the side edges of the square through hole, left and right sealing plates are respectively slidingly arranged in each cavity, second sliding blocks are fixedly arranged below the two sealing plates, the second sliding blocks are provided with through holes from left to right, and threads that are matched with the threaded rod are arranged in the through holes of the second sliding blocks.

[0015] Optionally, the delivery mechanism comprises a stage, a second connecting rod, a first sliding block, a first guide rail, a second cylinder, a second guide rail, a third cylinder, a guide baffle and a printing cabin.

[0016] The printing cabin is arranged below the printing platform, the inside of the printing cabin is a through hole from top to bottom, the upper part of the through hole of the printing cabin is communicated with the square through hole, the stage is slidably arranged in the inside of the printing cabin, the first guide rail is fixedly installed on the rear of the base, the first sliding block is slidably installed on the first guide rail, the second cylinder and the third cylinder are fixedly installed on the side wall of the base, the first sliding block is in transmission connection with the second cylinder, the first sliding block is rotatably connected with the stage through four second connecting rods, the second guide rail is fixedly arranged on the right side of the base, the guide baffle is slidably arranged on the second guide rail, and the guide baffle is in transmission connection with the third cylinder.

[0017] The stage and the finished product are communicated with the outside through the delivery outlet of the base.

[0018] Optionally, the flow guide mechanism comprises a flow guide rotating block, a third motor, a storage tank, an extrusion plate, a fourth cylinder and a wastewater tank.

[0019] The flow guide rotating block is rotatably installed in the inside of the circular groove, the bottom of the circular groove is provided with a discharge port and a sewage port, a wedge surface is arranged on the flow guide rotating block, the end of the wedge surface is a through hole, the through hole of the flow guide rotating block is matched with the discharge port or the sewage port, and the flow guide rotating block is driven by the third motor fixedly installed on the base.

[0020] The lower end of the discharge port and the sewage port is respectively provided with the storage tank and the wastewater tank, the right side of the storage tank is provided with an inlet, the inside of the storage tank is slidably provided with the extrusion plate, the extrusion plate is driven by the fourth cylinder fixedly installed at the bottom of the storage tank, and the lower end of the wastewater tank is provided with a water outlet.

[0021] Optionally, the upper end of the shell is further fixedly provided with a DMD exposure module.

[0022] The technical effect of the present application is:

[0023] 1. The present application provides a rotary 3D printer based on light curing printing, which adopts the working process of scraper scraping, laser illumination and stage sinking for 3D printing of objects, utilizes the rotary platform to carry multiple material laying assemblies, can realize multi-layer printing in one cycle, saves the waiting time of reciprocating material laying return, and adapts to the demand of high-speed printing of 3D products.

[0024] 2、The scraper mechanism provided by the present application can scrape the slurry above the object table when rotating clockwise, and cooperate with the DMD exposure module to print 3D objects, and when the scraper mechanism rotates counterclockwise, the remaining slurry on the printing platform can be sent back to the storage box, the repeated lifting and cleaning strips can clean the scraper, and after the scraper is lifted and the cleaning strip is lowered, the printing platform can be cleaned, and the flow guide mechanism cooperates with the sewage collection to realize full-automatic cleaning of the printing platform.

[0025] 3、The delivery mechanism provided by the present application can deliver the printed objects from the bottom, without the need to put hands into the printing area, which can not only avoid the situation that dust or debris falls into the printing slurry, but also can take out the finished products without waiting for the scraper mechanism to stop rotating after printing, thereby accelerating the efficiency of continuous work. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0027] The drawings that form a part of the present application are used to provide a further understanding of the present application, the illustrative embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0028] Figure 1 is a perspective structural schematic view of the printer in the embodiment of the present application from one visual angle;

[0029] Figure 2 is a perspective structural schematic view of the printer in the embodiment of the present application from one visual angle after removing the shell and the scraper mechanism;

[0030] Figure 3 is a perspective structural schematic view of the scraper mechanism in the embodiment of the present application from one visual angle;

[0031] Figure 4 is a front view of the scraper mechanism in the embodiment of the present application;

[0032] Figure 5 is a sectional view of A-A in the embodiment of the present application; Figure 4

[0033] Figure 6 is a partial enlarged schematic view of B in the embodiment of the present application; Figure 5

[0034] Figure 7 is a perspective structural schematic view of the delivery mechanism in the embodiment of the present application from one visual angle;​​

[0035] Figure 8 is a bottom view of the embodiment of the present application;

[0036] Figure 9 is a bottom view of the embodiment of the present application; Figure 8 is a sectional view of C-C in the embodiment of the present application;

[0037] Figure 10 is a bottom view of the embodiment of the present application; Figure 8 is a sectional view of D-D in the embodiment of the present application;

[0038] Figure 11 is a bottom view of the embodiment of the present application; Figure 9 is a partial enlarged view at E in the embodiment of the present application;

[0039] Figure 12 is a bottom view of the embodiment of the present application; Figure 10 is a partial enlarged view at F in the embodiment of the present application.

[0040] Label explanation: 1, base; 2, shell; 3, scraper mechanism; 31, annular guide rail; 32, material paving assembly; 321, guide rail frame; 322, scraper; 323, cleaning strip; 324, middle rod; 325, side rod; 326, first connecting rod; 327, fixed support rod; 33, connecting column; 34, first motor; 35, rotating disc; 36, adapter disc; 37, first air cylinder; 4, delivery mechanism; 41, object table; 42, second connecting rod; 43, first sliding block; 44, first guide rail; 45, second air cylinder; 46, second guide rail; 47, third air cylinder; 48, guide baffle; 49, printing cabin; 5, sealing mechanism; 51, support block; 52, threaded rod; 53, second sliding block; 54, sealing plate; 55, second motor; 6, flow guide mechanism; 61, flow guide rotating block; 62, third motor; 63, storage tank; 64, extrusion plate; 65, fourth air cylinder; 66, waste water tank; 7, DMD exposure module. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0042] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings, and several embodiments of the present application are given. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0043] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0044] The words “include,” “including,” “have,” “contain,” etc. used in this article are open-ended terms, meaning including but not limited to.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. The terms used in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0046] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0047] like Figures 1-12 As shown, this embodiment provides a rotary 3D printer based on photocuring, including a base 1 and a shell 2 installed above the base 1, the shell 2 is provided with a first cylinder 37, a scraper mechanism 3 and a printing platform, the first cylinder 37 is fixedly installed on the top of the shell 2, the printing platform is installed on the top of the base 1, the scraper mechanism 3 is transmission-connected to the first cylinder 37, and the rotation center of the scraper mechanism 3 coincides with the center of the printing platform; a square through hole and a center groove connected to the base 1 are provided on the printing platform, a sealing mechanism 5 is fixedly provided below the square through hole, and a guide mechanism 6 is fixedly provided below the center groove; a delivery port is provided on the side wall of the base 1, and a delivery mechanism 4 is provided between the printing platform and the delivery port.

[0048] In order to solve the problems existing in the prior art, improve printing accuracy and efficiency, reduce environmental requirements for use, and realize automatic cleaning of the printing platform, this embodiment provides a rotary 3D printer based on photocuring printing. Figure 1 、 Figure 2 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 and Figure 12As shown, the embodiment provides a rotary 3D printer based on light curing printing, comprising a base 1, a circular printing platform is arranged on the upper end surface of the base 1, a square through hole and a circular groove are arranged on the printing platform, a discharge port and a sewage port are arranged at the bottom of the circular groove of the printing platform, two cavities are arranged on the side of the square through hole of the printing platform, a square discharge port is arranged on the front of the base 1, a scraper mechanism 3 is rotatably arranged above the printing platform of the base 1, the rotary center of the scraper mechanism 3 coincides with the center of the printing platform, an outer shell 2 is fixedly arranged on the upper end of the base 1, a DMD exposure module 7 is fixedly arranged on the upper end of the outer shell 2, a delivery mechanism 4 is fixedly arranged in the middle of the base 1, a sealing mechanism 5 is fixedly arranged below the square through hole of the printing platform, and a flow guide mechanism 6 is fixedly arranged below the circular groove of the printing platform.

[0049] In specific work, the flow guide mechanism 6 extrudes the printing paste onto the printing platform, the scraper mechanism 3 is started to scrape the paste flat, then the paste is cured and formed after irradiation by the DMD exposure module 7, the delivery mechanism 4 moves down one layer, and the above steps are repeated to print 3D objects. At this time, the sealing mechanism 5 is started to seal the printing platform to prevent the printing paste from flowing out, the delivery mechanism 4 delivers the printed objects, the delivery mechanism 4 is reset after the finished product is taken out, the sealing mechanism 5 is opened, and the next printing can be performed. When stopping using, the scraper mechanism 3 is started to clean the printing platform, and the flow guide mechanism 6 is used to collect sewage.

[0050] As Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the scraper mechanism 3 comprises a ring guide rail 31 fixedly installed on the upper end of the base 1, three paving assemblies 32 uniformly distributed in the circumferential direction are slidingly arranged on the ring guide rail 31, the three paving assemblies 32 are fixedly connected through a connecting column 33 on the side close to the rotation center, the connecting column 33 is rotatably installed at the center of the printing platform, the connecting column 33 is driven by a first motor 34 installed at the lower end of the printing platform of the base 1, the paving assembly 32 comprises a guide rail frame 321 slidingly arranged on the ring guide rail 31, three vertical guide rails are arranged on the inner side of the guide rail frame 321, three through holes are formed on the upper end of the guide rail frame 321, a scraper 322 is slidingly arranged on the vertical guide rail in the middle of the guide rail frame 321, the scraper 322 is inclined at a certain angle relative to the printing platform, two cleaning strips 323 are slidingly arranged on the left and right vertical guide rails of the guide rail frame 321 respectively, the cleaning strip 323 is provided with two intercommunicating long grooves facing the scraper 322 and the printing platform, two cleaning brushes are slidingly arranged in the two long grooves respectively, the two cleaning brushes are connected to the bottom of the long groove of the cleaning strip 323 through springs, two side rods 325 are fixedly arranged on the upper end of the two cleaning strips 323 respectively, the two side rods 325 are slidingly installed in the two through holes on the upper end of the guide rail frame 321 respectively, an intermediate rod 324 is fixedly arranged on the upper end of the scraper 322, the intermediate rod 324 is slidingly installed in the through hole on the upper end of the guide rail frame 321, the intermediate rod 324 is rotatably connected to the two side rods 325 through a first connecting rod 326 respectively, two fixed support rods 327 are fixedly arranged on the upper end of the guide rail frame 321, the first connecting rod 326 is rotatably connected to the fixed support rod 327, three intermediate rods 324 in the three paving assemblies 32 are fixedly arranged above the three intermediate rods 324, a first air cylinder 37 is fixedly arranged on the upper end of the shell 2, the first air cylinder 37 is fixedly connected to the adapter circular table 36 at the telescopic end, the rotating disc 35 is rotatably connected to the adapter circular table 36.

[0051] In specific work, the first motor 34 is started to drive the three paving assemblies 32 to rotate clockwise, at this time, the angle between the front of the scraper 322 moving and the printing platform is an acute angle, which is convenient for the scraper 322 to pave the printing paste, when it is necessary to recover the paste, the first motor 34 is started to drive the three paving assemblies 32 to rotate counterclockwise, at this time, the angle between the front of the scraper 322 moving and the printing platform is an obtuse angle, which is convenient for the scraper 322 to shovel the printing paste and move above the flow guide mechanism 6, the printing paste remaining on the surface of the scraper 322 can be removed by the first air cylinder 37 repeatedly extending and retracting to drive the cleaning strip 323 to reciprocally move on the surface of the scraper 322, when it is necessary to clean the printing platform, the first air cylinder 37 is started to make the scraper 322 rise, the cleaning strip 323 falls and contacts the printing platform, alcohol and water are added, and the printing platform can be cleaned by the rotation of the cleaning strip 323.

[0052] As Figure 7As shown, the delivery mechanism 4 includes a printing cabin 49 fixedly installed below the printing platform, the printing cabin 49 is internally a through hole from top to bottom, the through hole of the printing cabin 49 is communicated with the square through hole of the printing platform, a stage 41 is slidingly arranged in the printing cabin 49, a first guide rail 44 is fixedly arranged at the back of the base 1, a first sliding block 43 is slidingly arranged on the first guide rail 44, the first sliding block 43 is driven by a second air cylinder 45 fixedly installed at the back of the base 1, the first sliding block 43 is rotatably connected with the stage 41 through four second connecting rods 42, a second guide rail 46 is fixedly arranged at the right side of the base 1, a guide baffle 48 is slidingly arranged on the second guide rail 46, the guide baffle 48 is driven by a third air cylinder 47 fixedly installed at the right side of the base 1.

[0053] As shown in Figure 8 , Figure 9 and Figure 11 , the sealing mechanism 5 includes a support block 51 fixedly installed at the lower end of the printing platform, a threaded rod 52 is rotatably arranged in the middle of the support block 51, the left half of the threaded rod 52 is left-handed and the right half is right-handed, the threaded rod 52 is driven by a second motor 55 fixedly installed at the lower end of the printing platform, two sealing plates 54 are slidingly arranged in the left and right cavities of the side edges of the square through hole of the printing platform, respectively, a second sliding block 53 is fixedly arranged below the two sealing plates 54, the second sliding block 53 is provided with a through hole from left to right, and the through hole of the second sliding block 53 is provided with a thread matched with the threaded rod 52.

[0054] In specific work, during printing, the second air cylinder 45 retracts a small distance after printing each layer to print the next layer, after complete printing, the second motor 55 is started to drive the two sealing plates 54 to move towards each other until they contact, closing the square through hole of the printing platform to prevent the printing paste from flowing out, at this time, the retracting end of the second air cylinder 45 continues to retract until the stage 41 reaches the bottom, at this time, the third air cylinder 47 retracts to move away the guide baffle 48, the first sliding block 43 is driven by the second air cylinder 45 to move forward, driving the stage 41 and the printed product to pass through the delivery port of the base 1, at this time, the product can be taken out with a shovel, the stage 41 moves backward, then the guide baffle 48 is reset, at this time, the second air cylinder 45 is started to drive the stage 41 to move forward, after the stage 41 contacts the guide baffle 48, it moves upward until the stage 41 contacts the printing cabin 49, then the second motor 55 is started to move away the sealing plates 54, when the plane of the stage 41 coincides with the printing platform, the next printing can be started.

[0055] As shown in Figure 2 , Figure 8 , Figure 10 and Figure 12As shown, the flow guide mechanism 6 includes a flow guide rotating block 61 rotatably installed in the printing platform circular groove, the flow guide rotating block 61 is provided with a wedge surface, the wedge surface of the flow guide rotating block 61 is provided with a through hole, the through hole of the flow guide rotating block 61 can be matched with the discharge port or the sewage port provided at the bottom of the printing platform circular groove, the flow guide rotating block 61 is driven by a third motor 62 fixedly installed on the base 1, the bottom of the printing platform circular groove is provided with a storage tank 63 and a waste water tank 66 at the lower end of the discharge port and the sewage port respectively, the right side of the storage tank 63 is provided with an inlet, and the inside of the storage tank 63 is slidably provided with an extrusion plate 64, the extrusion plate 64 is driven by a fourth air cylinder 65 fixedly installed at the bottom of the storage tank 63, and the lower end of the waste water tank 66 is provided with a water outlet.

[0056] In specific work, the printing paste is introduced from the right inlet of the storage tank 63, and then sealed with a plastic cover, when printing starts, the third motor 62 is started to drive the through hole of the flow guide rotating block 61 to communicate with the discharge port at the bottom of the printing platform circular groove, the fourth air cylinder 65 is started to drive the extrusion plate 64 to move upward, so that the printing paste at the discharge port at the bottom of the printing platform circular groove is extruded, and then the printing is carried out by scraping the paste by the scraper mechanism 3, when the printing paste is recycled, the extrusion plate 64 is lowered, so that the printing paste on the flow guide rotating block 61 flows back to the storage tank 63 along the wedge surface, after the scraper mechanism 3 is switched to the cleaning mode, the through hole of the flow guide rotating block 61 is driven to communicate with the sewage port at the bottom of the printing platform circular groove, so that the sewage for cleaning is collected in the waste water tank 66, and finally the water outlet at the bottom of the waste water tank 66 can be opened to remove the sewage.

[0057] In summary, the embodiment provides a rotary 3D printer based on light curing printing, which adopts a working process of scraper scraping, laser irradiation and object table sinking for 3D printing of objects, utilizes a rotary platform to carry multiple material laying assemblies, can realize multi-layer printing in one cycle, saves the waiting time of reciprocating material laying return, and meets the demand of high-speed printing of 3D products.

[0058] Meanwhile, when the scraper mechanism rotates clockwise, the scraper can scrape the paste above the object table, and cooperate with the DMD exposure module to print 3D objects, when the scraper mechanism rotates counterclockwise, the remaining paste on the printing platform can be sent back to the storage tank, the repeatedly raised and lowered cleaning strips can clean the scraper, after the scraper is raised and the cleaning strips are lowered, the printing platform can be cleaned, and the flow guide mechanism cooperates to collect sewage, realizing full-automatic cleaning of the printing platform.

[0059] In addition, the delivery mechanism provided in the embodiment can deliver the printed objects from the bottom, without the need to put hands into the printing area, which can not only avoid the situation that dust or debris falls into the printing paste, but also can take out the finished products without waiting for the scraper mechanism to stop rotating after printing, thereby accelerating the efficiency of continuous work.

[0060] The above description is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A rotary 3D printer based on photocuring, characterized in that: The invention comprises a base (1) and a shell (2) installed above the base (1); a first cylinder (37), a scraper mechanism (3) and a printing platform are arranged inside the shell (2); the first cylinder (37) is fixedly installed on the top of the shell (2); the printing platform is installed on the top of the base (1); the scraper mechanism (3) is transmission-connected to the first cylinder (37), and the rotation center of the scraper mechanism (3) coincides with the center of the circle of the printing platform; a square through hole and a center groove communicating with the base (1) are provided on the printing platform; a sealing mechanism (5) is fixedly provided below the square through hole, and a guide mechanism (6) is fixedly provided below the center groove; a delivery port is provided on the side wall of the base (1), and a delivery mechanism (4) is provided between the printing platform and the delivery port.

2. The printer according to claim 1, wherein: The scraper mechanism (3) comprises an annular guide rail (31), a material spreading assembly (32), a guide rail frame (321), a scraper (322), a cleaning strip (323), an intermediate rod (324), a side rod (325), a first connecting rod (326), a fixed support rod (327), a connecting column (33), a first motor (34), a turntable (35) and an adapter round table (36); the annular guide rail (31) is installed above the base (1), and a plurality of material spreading assemblies (32) are slidably arranged on the annular guide rail (31), and the material spreading assemblies (32) are evenly distributed along the circumferential direction; The side of each material laying assembly (32) close to the rotation center is fixedly connected by a connecting column (33), and the connecting column (33) is rotatably installed at the center of the printing platform. The material laying assembly (32) includes a guide rail frame (321) slidably arranged on the annular guide rail (31), and three vertical guide rails of left, middle and right are arranged on the inner side of the guide rail frame (321). A scraper (322) is slidably arranged on the vertical guide rail in the middle of the guide rail frame (321), and the scraper (322) is tilted relative to the printing platform. Two cleaning strips (323) are slidably arranged on the left vertical guide rail and the right vertical guide rail of the guide rail frame (321), and two long grooves facing the scraper (322) and the printing platform are opened on the cleaning strip (323). The two long grooves are interconnected, and two cleaning brushes are slidably arranged in each long groove. The upper ends of the two cleaning strips (323) are respectively fixedly provided with side rods (325); An intermediate rod (324) is fixedly provided on the upper end of the scraper (322), and the intermediate rod (324) is rotatably connected to the side rods (325) at the upper ends of the two cleaning strips (323) via first connecting rods (326); Two fixed support rods (327) are fixedly provided at the upper end of the guide rail frame (321), and the middle part of the first connecting rod (326) is rotatably connected to the fixed support rod (327). A turntable (35) is fixedly provided above the three intermediate rods (324) in the three paving assemblies (32), and a transfer table (36) is rotatably installed on the turntable (35), and the transfer table (36) is rotatably connected to the first cylinder (37).

3. The printer according to claim 2, wherein: A first motor (34) is installed at the lower end of the printing platform, and the connecting column (33) is transmission-connected to the first motor (34).

4. The printer according to claim 2, wherein: The upper end of the guide rail frame (321) is provided with three through holes, namely, left, middle and right. The middle rod (324) is slidably mounted in the middle through hole of the upper end of the guide rail frame (321). The side rods (325) at the upper ends of the two cleaning strips (323) are slidably mounted in the left and right through holes of the upper end of the guide rail frame (321).

5. The printer according to claim 2, wherein: The two cleaning brushes are connected to the bottom of the long groove through a spring.

6. The printer according to claim 1, wherein: The sealing mechanism (5) comprises a support block (51), a threaded rod (52), a second slider (53), a sealing plate (54) and a second motor (55); The support block (51) is mounted on the lower end of the printing platform, and a threaded rod (52) is rotatably provided in the middle of the support block (51), the left half of which rotates leftward and the right half of which rotates rightward, and the threaded rod (52) is driven by a second motor (55) fixedly mounted on the lower end of the printing platform; Two left and right cavities are provided on the sides of the square through hole, and two left and right sealing plates (54) are slidably provided in each cavity. A second slider (53) is fixedly provided below the two sealing plates (54), and the second slider (53) is provided with a through hole from left to right, and a thread matching the threaded rod (52) is provided inside the through hole of the second slider (53).

7. The printer according to claim 1, wherein: The delivery mechanism (4) comprises a loading platform (41), a second connecting rod (42), a first slider (43), a first guide rail (44), a second cylinder (45), a second guide rail (46), a third cylinder (47), a guide baffle (48) and a printing chamber (49); The printing cabin (49) is arranged below the printing platform, the interior of the printing cabin (49) is a through hole from top to bottom, and the top of the through hole of the printing cabin (49) is communicated with a square through hole, and the interior of the printing cabin (49) is slidingly provided with the loading platform (41), the first guide rail (44) is fixedly installed behind the base (1), the first slider (43) is slidably installed on the first guide rail (44), the second cylinder (45) and the third cylinder (47) are both fixedly installed on the side wall of the base (1), the first slider (43) is transmission-connected to the second cylinder (45), the first slider (43) is rotationally connected to the loading platform (41) through four second connecting rods (42), the second guide rail (46) is fixedly provided on the right side of the base (1), the second guide rail (46) is slidingly provided with a guide baffle (48), and the guide baffle (48) is transmission-connected to the third cylinder (47); The loading platform (41) and the printed product are connected to the outside world through the delivery port of the base (1).

8. The printer according to claim 1, wherein: The flow guiding mechanism (6) comprises a flow guiding swirl block (61), a third motor (62), a material storage box (63), an extrusion plate (64), a fourth cylinder (65) and a waste water tank (66); The guide rotary block (61) is rotatably mounted inside the circular groove, a discharge port and a sewage port are provided at the bottom of the circular groove, a wedge surface is provided on the guide rotary block (61), the end of the wedge surface is a through hole, the through hole of the guide rotary block (61) cooperates with the discharge port or the sewage port, and the guide rotary block (61) is driven by a third motor (62) fixedly mounted on the base (1); A material storage box (63) and a waste water tank (66) are respectively provided at the lower ends of the material discharge port and the sewage port. A material feed port is provided on the right side of the material storage box (63). An extrusion plate (64) is slidably provided on the inner side of the material storage box (63). The extrusion plate (64) is driven by a fourth cylinder (65) fixedly installed at the bottom of the material storage box (63). A water outlet is provided at the lower end of the waste water tank (66).

9. The printer according to claim 1, wherein: A DMD exposure module (7) is also fixedly provided on the upper end of the housing (2).

Images