An elastomer 3D printing resin recycling mechanism, a 3D printing device and a 3D printing process

Abstract

The application discloses a kind of elastomer 3D printing resin recovery mechanism, and 3D printing device and 3D printing process, including being located on the resin tank of 3D printer body, resin tank and liquid pump being located in the body of 3D printer, the liquid inlet of the resin tank is equipped with liquid inlet pipe, electromagnetic valve B is equipped on the liquid inlet pipe, the liquid return port of the resin tank is equipped with liquid return pipe, electromagnetic valve A is equipped on the liquid return pipe, between resin tank liquid outlet, liquid pump and electromagnetic valve B and between resin tank liquid inlet and electromagnetic valve A respectively pass through hose connection.The application has the advantages that liquid photosensitive resin is automatically circulated, and liquid photosensitive resin is more efficient in use and recovery.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of 3D printing, in particular to an elastomer 3D printing resin recovery mechanism, a 3D printing device and a 3D printing process. BACKGROUND

[0002] 3D printing is a technology for manufacturing three-dimensional objects by layering materials. A light-cured 3D printer is an additive manufacturing device that cures liquid photosensitive resin with a UV light source.

[0003] A light-cured 3D printer includes a light source system, a resin tank, a build platform, an optical and motion control system, a mechanical structure, an electronic control system, an auxiliary system, software and an interface.

[0004] The light source system is divided into laser, DLP projector and LCD mask according to different technologies.

[0005] The resin tank has a transparent bottom that allows UV light to pass through and is used to hold liquid photosensitive resin.

[0006] The build platform includes a Z-axis lifting mechanism and a leveling system.

[0007] The optical and motion control system includes a galvanometer system that controls the DLP / LCD optical path.

[0008] The mechanical structure includes a frame, guide rails and transmission structure, and a housing.

[0009] The electronic control system includes a main control board, a power module and a sensor.

[0010] Existing light-cured 3D printers use liquid photosensitive resin as the material for printing. The liquid photosensitive resin after printing remains in the resin tank. This part of the liquid photosensitive resin can be used again. The staff needs to remove the resin tank and pour the liquid photosensitive resin remaining in the resin tank into a resin tank for next use. Pouring and recycling the liquid photosensitive resin requires a certain amount of time and increases the workload of the staff.

[0011] In view of this, we propose an elastomer 3D printing resin recovery mechanism, a 3D printing device and a 3D printing process. SUMMARY

[0012] The purpose of the present application is to provide an elastomer 3D printing resin recovery mechanism, a 3D printing device and a 3D printing process to solve the problems raised in the background.

[0013] In order to achieve the above object, the present application provides the following technical scheme: A kind of elastomer 3D printing resin recovery mechanism, including resin tank being arranged on the body of 3D printer, resin tank and liquid pump being arranged in the body of 3D printer, the liquid inlet of the resin tank is equipped with liquid inlet pipe, the liquid inlet pipe is equipped with electromagnetic valve B, the liquid return port of the resin tank is equipped with liquid return pipe, the liquid return pipe is equipped with electromagnetic valve A, the liquid inlet pipe and the liquid return pipe are respectively arranged in the hole of the shell of the body of 3D printer, the hole diameter of the hole of the shell of the body of 3D printer is greater than the diameter of liquid inlet pipe and liquid return pipe, the electromagnetic valve B and the electromagnetic valve A are located in the body of 3D printer, and the liquid outlet of the resin tank, the liquid pump and the electromagnetic valve B and the liquid inlet and the electromagnetic valve A between the resin tank are connected by hose respectively.

[0014] Preferably, the body of 3D printer is provided with a support structure, the support structure includes a plurality of columns, the top end of each column is fixedly provided with an arc-shaped plate A, a plurality of fixed blocks are fixedly arranged on the columns, a plurality of connecting rods are arranged through the fixed blocks, the top end of each connecting rod is fixedly provided with an arc-shaped plate B, a single arc-shaped plate B and a single arc-shaped plate A cooperate to form a half-arc plate for supporting the resin tank, a plurality of connecting rods are connected with a horizontal plate, the bottom end of each connecting rod is fixedly connected with a horizontal plate, a spring A is arranged between the fixed block and the arc-shaped plate B, the spring A is sleeved on the connecting rod, and the two ends of the spring A are fixedly connected with the fixed block and the arc-shaped plate B.

[0015] Preferably, one side of the resin tank is connected with the shell of the body of 3D printer through a rotating structure, the rotating structure includes a connecting block A, two connecting blocks A are symmetrically fixedly arranged on one side of the resin tank, a connecting block B is fixedly arranged on the shell of the body of 3D printer, and the two ends of the connecting block B are rotatably connected with the two connecting blocks A through rotating shafts.

[0016] The other side of the resin tank is connected with the shell of the body of 3D printer through a pushing structure, the pushing structure includes an electric push rod, the base of the electric push rod is rotatably connected with the shell of the body of 3D printer through a universal shaft B, and the push rod end of the electric push rod is rotatably connected with the other side of the resin tank through a universal shaft A.

[0017] Preferably, the inner bottom wall corresponding to the liquid return port of the resin tank is provided with two opposite inclined surfaces, and the low ends of the two inclined surfaces correspond to the liquid return port.

[0018] Preferably, the resin tank outlet and inlet are provided with connecting structures, the connecting structure comprises a connecting pipe, the end of the connecting pipe is connected with the corresponding hose, a threaded sleeve is screwed on the connecting pipe, the threaded sleeve is divided into an inner hole and an outer hole, the diameter of the inner hole is smaller than that of the outer hole, the inner hole of the threaded sleeve is threadedly connected with the outer wall of the connecting pipe, the outer wall of the threaded sleeve is threadedly connected with the outer wall of the threaded sleeve, and the outer wall of the threaded sleeve is threadedly connected with the outer wall of the threaded sleeve.

[0019] Preferably, the resin tank outlet and inlet are provided with connecting structures, the connecting structure comprises a connecting pipe, the end of the connecting pipe is connected with the corresponding hose, a threaded sleeve is screwed on the connecting pipe, the threaded sleeve is divided into an inner hole and an outer hole, the diameter of the inner hole is smaller than that of the outer hole, the inner hole of the threaded sleeve is threadedly connected with the outer wall of the connecting pipe, the outer wall of the threaded sleeve is threadedly connected with the outer wall of the threaded sleeve, and the outer wall of the threaded sleeve is threadedly connected with the outer wall of the threaded sleeve.

[0020] Preferably, the threaded sleeve is provided with a limiting groove, the inner end of the limiting groove is closed and the outer end is open, the limiting column is L-shaped, and the horizontal section of the limiting column is inserted into the limiting groove.

[0021] 3D printing process of 3D printing device with resin recovery mechanism:

[0022] S1, place the resin tank containing liquid photosensitive resin in the 3D printer body, and connect the outlet and inlet of the resin tank with two connecting structures respectively;

[0023] S2, open the electromagnetic valve B, close the electromagnetic valve A, the liquid pump works to pump the liquid photosensitive resin in the resin tank into the resin tank, then close the electromagnetic valve B, start the 3D printer body to print the elastomer;

[0024] S3, after completing the 3D printing of the elastomer, the other side of the resin tank is lifted up by the pushing structure, the resin tank is inclined around the rotating structure, the electromagnetic valve A is opened, the electromagnetic valve B is in closed state, the liquid photosensitive resin in the resin tank flows back into the resin tank due to gravity, then the electromagnetic valve A is closed.

[0025] Compared with the prior art, the present application has the following advantages:

[0026] 1、The resin tank, connecting structure, resin tank, liquid pump, liquid return pipe, electromagnetic valve A, liquid inlet pipe and electromagnetic valve B are set, which has the advantages that the liquid photosensitive resin is automatically circulated, the use and recovery of the liquid photosensitive resin are more efficient, the problem that it takes a certain time to pour out and recover the liquid photosensitive resin is solved, and the workload of the staff is also increased.

[0027] 2、The stand, arc-shaped plate A, fixing block, arc-shaped plate B, spring A, cross plate and connecting rod are set, which has the advantages that the resin tank placed in the 3D printer body is supported and the resin tank is convenient to take out, and the problem that the resin tank is not convenient to disassemble and install in the 3D printer body is solved.

[0028] 3、The connecting block A, connecting block B, rotating shaft, electric push rod, universal shaft A and universal shaft B are set, which has the advantages that the resin tank is inclined, the liquid photosensitive resin in the resin tank flows to the liquid return port of the resin tank for reflux, and the liquid photosensitive resin cannot be left in the resin tank, and the problem that the liquid photosensitive resin is left at the flat bottom of the resin tank is solved.

[0029] 4、The connecting pipe, threaded sleeve and threaded pipe are set, which has the advantages that the resin tank is conveniently installed or disassembled, and the efficiency is improved.

[0030] 5、The embedding groove, sealing plate, guide column, spring B, limiting block and sealing strip are set, which has the advantages that the liquid outlet and the liquid inlet of the resin tank are sealed, and after the resin tank is installed, the liquid outlet and the liquid inlet are adaptively opened for the circulation of the liquid photosensitive resin, and the operation is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0032] Figure 2 It is a schematic diagram of the overall structure of the present application in the working state;

[0033] Figure 3 It is a schematic diagram of the body structure of the present application;

[0034] Figure 4 It is a schematic diagram of the resin recovery structure of the present application;

[0035] Figure 5 It is a schematic diagram of the resin recovery structure of the present application;

[0036] Figure 6 It is a schematic diagram of the connecting structure and the plugging structure of the present application;

[0037] Figure 7 A schematic view of the enlarged view of the resin tank of the present application; Figure 6

[0038] Figure 8 A schematic view of the sectional structure of the resin tank of the present application;

[0039] Figure 9 A schematic view of the plugging structure of the present application;

[0040] Figure 10 A schematic view of the sectional structure of the connecting structure of the present application;

[0041] Figure 11 A schematic view of the sectional structure of the connecting structure of the present application;

[0042] Figure 12 A schematic view of the supporting structure of the present application in the supporting state;

[0043] Figure 13 A schematic view of the supporting structure of the present application in the placing state;

[0044] Figure 14 A schematic view of the rotating structure of the present application;

[0045] Figure 15 A schematic view of the pushing structure of the present application.

[0046] In the figure: 100, 3D printer body; 200, resin tank; 300, rotating structure; 400, pushing structure; 500, connecting structure; 600, resin tank; 700, supporting structure; 800, liquid pump; 900, liquid return pipe; 1000, electromagnetic valve A; 1100, liquid inlet pipe; 1200, electromagnetic valve B; 1400, plugging structure;

[0047] 201, inclined surface;

[0048] 301, connecting block A; 302, connecting block B; 303, rotating shaft;

[0049] 401, electric push rod; 402, universal shaft A; 403, universal shaft B;

[0050] 501, connecting pipe; 502, threaded sleeve; 503, threaded pipe; 504, limiting column;

[0051] 5031, limiting groove;

[0052] 601, embedded groove;

[0053] 701, vertical column; 702, arc-shaped plate A; 703, fixed block; 704, arc-shaped plate B; 705, spring A; 706, horizontal plate; 707, connecting rod;

[0054] ​1401, sealing plate; 1402, guide column; 1403, spring B; 1404, limiting block; 1405, sealing strip. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in 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. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0056] Please refer to Figures 1 to 5The application provides an embodiment of an elastomer 3D printing resin recovery mechanism, a 3D printing device and a 3D printing process, which comprises a resin tank 200 arranged on a 3D printer body 100, a resin tank 600 arranged in the 3D printer body 100 and a liquid pump 800, the 3D printer body 100 comprises a light source system, a building platform, an optical and motion control system, a mechanical structure, an electronic control system, an auxiliary system and software and an interface, the transparent bottom of the resin tank 200 corresponds to the light source of the 3D printer body 100, a liquid inlet pipe 1100 is arranged at the liquid inlet of the resin tank 200, the liquid inlet pipe 1100 is communicated with the inner cavity of the resin tank 200 through the liquid inlet, an electromagnetic valve B1200 is arranged on the liquid inlet pipe 1100, the electromagnetic valve B1200 is selected and used by a professional technician according to the actual situation, a liquid return pipe 900 is arranged at the liquid return port of the resin tank 200, the liquid return pipe 900 is communicated with the inner cavity of the resin tank 200 through the liquid return port, an electromagnetic valve A1000 is arranged on the liquid return pipe 900, the electromagnetic valve A1000 is selected and used by a professional technician according to the actual situation, the liquid inlet pipe 1100 and the liquid return pipe 900 are arranged in the holes on the shell of the 3D printer body 100, the hole diameter of the hole on the shell of the 3D printer body 100 is greater than the diameter of the liquid inlet pipe 1100 and the liquid return pipe 900, when the resin tank 200 is inclined, the liquid inlet pipe 1100 and the liquid return pipe 900 have enough inclined space in the hole on the shell of the 3D printer, the electromagnetic valve B1200 and the electromagnetic valve A1000 are located in the 3D printer body 100, the electromagnetic valve B1200 and the electromagnetic valve A1000 can be inclined in the 3D printer body 100 along with the liquid inlet pipe 1100 and the liquid return pipe 900, and have enough space; the resin tank 600 is provided with a liquid inlet, the liquid light-sensitive resin is added into the resin tank 600 through the liquid inlet, the liquid light-sensitive resin in the resin tank 600 is supplemented, and a sealing plug is arranged at the liquid inlet; the resin tank 600 liquid outlet, the liquid pump 800 and the electromagnetic valve B1200 and the resin tank 600 liquid inlet and the electromagnetic valve A1000 are connected through a hose respectively. The chambers of the resin tank 600 and the liquid pump 800, the resin tank 200 and the plurality of hoses are sequentially communicated. The inner walls of the chambers through which the liquid light-sensitive resin flows are coated with a hyperbranched epoxy resin liquid smooth coating for preventing the liquid light-sensitive resin from remaining.When printing the elastomer using the 3D printer body 100, the resin tank 200 containing the liquid photosensitive resin is placed in the 3D printer body 100, and the liquid outlet and the liquid inlet of the resin tank 200 are respectively docked with the two connecting structures 500, the electromagnetic valve B1200 is opened, the electromagnetic valve A1000 is closed, the liquid pump 800 works to pump the liquid photosensitive resin in the resin tank 600 into the resin tank 200, then the electromagnetic valve B1200 is closed, and the 3D printer body 100 is started to print the elastomer; after the 3D printing of the elastomer is completed, the other side of the resin tank 200 is lifted by the pushing structure 400, the resin tank 200 is inclined with the rotating structure 300 as the axis, the inclination angle is self-defined, the electromagnetic valve A1000 is opened, the electromagnetic valve B1200 is in the closed state, the liquid photosensitive resin in the resin tank 200 flows back into the resin tank 600 from the backflow port of the resin tank 200 due to gravity, and then the electromagnetic valve A1000 is closed.

[0057] The present application has the advantages that the liquid photosensitive resin is automatically circulated, the use and recovery of the liquid photosensitive resin are more fast and efficient, the problem that it takes a certain amount of time to pour out and recover the liquid photosensitive resin is solved, and the workload of the staff is also increased.

[0058] Please refer to Figure 4 , Figure 12 and Figure 13The application provides an embodiment of an elastomer 3D printing resin recovery mechanism, a support structure 700 is arranged in a 3D printer body 100, the support structure 700 comprises a plurality of stand columns 701, the bottom ends of the plurality of stand columns 701 are fixed to the inner bottom wall in the inner chamber of the 3D printer body 100, arc-shaped plates A 702 are respectively arranged at the top ends of the plurality of stand columns 701, a plurality of fixing blocks 703 are respectively arranged on the plurality of stand columns 701, connecting rods 707 are respectively arranged on the plurality of fixing blocks 703, arc-shaped plates B 704 are respectively arranged at the top ends of the plurality of connecting rods 707, a single arc-shaped plate B 704 and a single arc-shaped plate A 702 cooperatively form a half-arc plate for supporting a resin tank 600, a horizontal plate 706 is connected to the bottom ends of the plurality of connecting rods 707, the bottom ends of the plurality of connecting rods 707 are fixedly connected to the horizontal plate 706, springs A 705 are arranged between the fixing blocks 703 and the arc-shaped plates B 704, the springs A 705 are sleeved on the connecting rods 707, the two ends of the springs A 705 are fixedly connected to the fixing blocks 703 and the arc-shaped plates B 704 respectively, and the elastic coefficient of the springs A 705 is selected by a person skilled in the art according to actual conditions. When the top side of the horizontal plate 706 contacts the fixing block 703, the arc-shaped plate B 704 and the arc-shaped plate A 702 form a half-arc plate at this time. When the resin tank 600 is installed in the 3D printer body 100, the resin tank 600 containing liquid photosensitive resin is placed in the 3D printer body 100, a worker pushes the horizontal plate 706 downward by hand, the connecting rods 707 move downward relative to the fixing blocks 703, the arc-shaped plates B 704 move downward, the springs A 705 are further compressed, the resin tank 600 is placed on the arc-shaped plate A 702, the resin tank 600 contacts the inner wall of the arc-shaped plate A 702, the horizontal plate 706 is loosened, under the action of the springs A 705, the arc-shaped plates B 704 move upward, the connecting rods 707 drive the horizontal plate 706 to move upward, and the top side of the horizontal plate 706 contacts the fixing block 703 until the arc-shaped plate B 704 and the arc-shaped plate A 702 form a half-arc plate to support the resin tank 600 at this time. The hose is connected through the connecting structure 500; when the resin tank 600 is removed, the worker pushes the horizontal plate 706 downward by hand, the arc-shaped plate B 704 moves downward and no longer supports the resin tank 600, the resin tank 600 is taken out, and the hose is detached through the connecting structure 500.

[0059] The application has the advantages that the resin tank 600 placed in the 3D printer body 100 is supported, and the resin tank 600 is convenient to take out, and the problem that the resin tank 600 is fixed in the 3D printer body 100 and is inconvenient to disassemble and install is solved.

[0060] Please refer to Figure 4 、 Figure 5 、 Figure 14 and Figure 15The application provides an embodiment of an elastomer 3D printing resin recovery mechanism, one side of a resin tank 200 is connected with the shell of a 3D printer body 100 through rotating structure 300, the rotating structure 300 comprises connecting blocks A 301, two connecting blocks A 301 are symmetrically fixed on one side of the resin tank 200, the shell of the 3D printer body 100 is fixedly provided with connecting blocks B 302, and the two ends of the connecting blocks B 302 are rotationally connected with the two connecting blocks A 301 through rotating shafts 303; the other side of the resin tank 200 is connected with the shell of the 3D printer body 100 through pushing structure 400, the pushing structure 400 comprises an electric push rod 401, the electric push rod 401 is selected and used by a person skilled in the art according to the actual situation, the base of the electric push rod 401 is rotationally connected with the shell of the 3D printer body 100 through universal shaft B 403, and the push rod end of the electric push rod 401 is rotationally connected with the other side of the resin tank 200 through universal shaft A 402. Two opposite inclined surfaces 201 are arranged on the inner bottom wall corresponding to the liquid return port of the resin tank 200, the low ends of the two inclined surfaces 201 correspond to the liquid return port, an inner concave groove is formed at the liquid return port of the resin tank 200, and the liquid photopolymer in the resin tank 200 can flow back. In the process of recovering the liquid photopolymer, in order to prevent the liquid photopolymer from remaining at the flat bottom in the resin tank 200, the other side of the resin tank 200 is slightly lifted through the electric push rod 401, the connecting blocks A 301 rotate relative to the connecting blocks B 302 with the rotating shaft 303 as the axis, the resin tank 200 is inclined, the liquid photopolymer in the resin tank 200 flows to the liquid return port of the resin tank 200 for backflow, and the liquid photopolymer cannot remain in the resin tank 200. After the liquid photopolymer is recovered, the other side of the resin tank 200 is flattened under the drive of the electric push rod 401, and the resin tank 200 is flattened.

[0061] The application has the advantages that the resin tank 200 is inclined, the liquid photopolymer in the resin tank 200 flows to the liquid return port of the resin tank 200 for backflow, and the liquid photopolymer cannot remain in the resin tank 200, and the problem that the liquid photopolymer remains at the flat bottom in the resin tank 200 is solved.

[0062] Please refer to Figure 6 、 Figure 7 、 Figure 10 and Figure 11The application provides an embodiment of an elastomer 3D printing resin recovery mechanism, liquid outlets and liquid inlets of a resin tank 600 are each provided with a connecting structure 500, the connecting structure 500 comprises a connecting pipe 501, the connecting pipe 501 is connected with a corresponding hose at an end, a threaded sleeve 502 is sleeved on the connecting pipe 501 in a threaded mode, the threaded sleeve 502 is divided into an inner hole and an outer hole, the inner hole of the threaded sleeve 502 has a smaller diameter than the outer hole, the threaded sleeve 502 is in threaded connection with a threaded groove on an outer wall of the connecting pipe 501, the outer wall of the threaded sleeve 502 is provided with a threaded pipe 503, the connecting pipe 501 is inserted into the threaded pipe 503 in a matched mode, the threaded groove on the outer wall of the threaded pipe 503 is in threaded connection with the threaded groove on the outer wall of the threaded sleeve 502, and the inner bottom wall of the outer hole of the threaded sleeve 502 is in sealing cooperation with the end of the threaded pipe 503 through a sealing ring. When the hose is connected with the liquid outlets and the liquid inlets of the resin tank 600 through the connecting structure 500, the connecting pipe 501 is inserted into the threaded pipe 503 in a matched mode, at this time, the threaded sleeve 502 is not in contact with the threaded pipe 503, the threaded sleeve 502 is moved inward relative to the connecting pipe 501 by rotating the threaded sleeve 502, the threaded sleeve 502 is continuously rotated until the outer wall of the threaded pipe 503 is in complete threaded connection with the threaded groove on the outer wall of the threaded sleeve 502 when the outer hole of the threaded sleeve 502 is in contact with the threaded pipe 503, and the hose is connected with the resin tank 600 in this way. When the resin tank 600 is disassembled, the threaded sleeve 502 is rotated in a reverse direction, the threaded sleeve 502 is separated from the threaded pipe 503, the connecting pipe 501 is pulled out, and the disassembly of the resin tank 600 is completed.

[0063] The connecting pipe 501, the threaded sleeve 502 and the threaded pipe 503 are arranged, so that the resin tank 600 can be conveniently installed or disassembled, and the efficiency is improved.

[0064] Please refer to Figures 6 to 11The application provides a kind of embodiment: a kind of elastomer 3D printing resin recovery mechanism, the inner wall of the liquid outlet and the liquid inlet of resin tank 600 is correspondingly provided with sealing structure 1400, sealing structure 1400 includes guide column 1402 and sealing plate 1401, two guide columns 1402 are symmetrically fixed in the inner wall of the liquid outlet or the liquid inlet of resin tank 600, sealing plate 1401 is respectively sleeved on two guide columns 1402 on both ends, sealing plate 1401 is arc-shaped, sealing plate 1401 is in contact with the inner wall of the liquid outlet and the liquid inlet of resin tank 600, the inner end of two guide columns 1402 is respectively fixed with limiting block 1404, spring B 1403 is arranged between limiting block 1404 and sealing plate 1401, spring B 1403 is sleeved on guide column 1402, the both ends of spring B 1403 are fixedly connected with limiting block 1404 and sealing plate 1401, the elastic coefficient of spring B 1403 is selected by the technical personnel of the profession according to actual situation, sealing strip 1405 is fixed on sealing plate 1401, sealing strip 1405 surrounds a square frame, the frame-shaped sealing strip 1405 is arc-shaped, sealing strip 1405 is inserted and connected with the embedded groove 601 opened in the inner wall of the liquid outlet or the liquid inlet of resin tank 600, and sealing is realized by the insertion and connection of sealing strip 1405 and embedded groove 601, sealing plate 1401 is pushed and connected with the limiting column 504 fixed on the insertion end of connecting pipe 501, the inner wall of threaded pipe 503 is provided with limiting groove 5031, the inner end of limiting groove 5031 is closed, and the outer end is open, the limiting column 504 is L-shaped, and the horizontal section of limiting column 504 is inserted and connected with limiting groove 5031.In the non-docking connection structure 500, the force generated by the compressed spring B 1403 pushes against the sealing plate 1401, so that the sealing strip 1405 is inserted into the embedded groove 601, and the liquid photosensitive resin in the resin tank 600 is stored in the resin tank 600, when the connection structure 500 is docked, the horizontal section of the limiting column 504 is inserted into the limiting groove 5031 after the connecting pipe 501 is correspondingly inserted into the threaded pipe 503, the horizontal section of the limiting column 504 moves to the bottom along the limiting groove 5031, and the connecting pipe 501 is limited, so that the threaded sleeve 502 and the threaded pipe 503 are connected, at this time, the longitudinal end of the limiting column 504 pushes away the sealing plate 1401, the sealing plate 1401 moves along the guide column 1402, the spring B 1403 is further compressed, the sealing strip 1405 is separated from the embedded groove 601, and the connecting pipe 501 is communicated with the resin tank 600.

[0065] The application has the advantages of sealing the liquid outlet and the liquid inlet of the resin tank 600, and adaptively opening the liquid outlet and the liquid inlet for the circulation of the liquid photosensitive resin after the resin tank 600 is installed, which is convenient to operate.

[0066] Working principle: when printing the elastomer using the 3D printer body 100, select the liquid photosensitive resin with elasticity, place the resin tank 600 containing the liquid photosensitive resin in the 3D printer body 100, and the staff pushes the horizontal plate 706 downward with his hand, the connecting rod 707 moves downward relative to the fixed block 703, the arc plate B 704 moves downward, the spring A 705 is further compressed, the resin tank 600 is placed on the arc plate A 702, the resin tank 600 contacts the inner wall of the arc plate A 702, the horizontal plate 706 is loosened, the arc plate B 704 moves upward under the action of the spring A 705, the connecting rod 707 drives the horizontal plate 706 to move upward, until the top side of the horizontal plate 706 contacts the fixed block 703, at this time the arc plate B 704 and the arc plate A 702 form a half-arc plate to support the resin tank 600, when the connecting pipe 501 is inserted into the threaded pipe 503, the threaded sleeve 502 does not contact the threaded pipe 503 at this time, after the connecting pipe 501 is inserted into the threaded pipe 503, the transverse section of the limiting column 504 is inserted into the limiting groove 5031, and the limiting column 504 moves along the limiting groove 5031 to the bottom to limit the inserted connecting pipe 501, at this time the longitudinal end of the limiting column 504 pushes away the sealing plate 1401, the sealing plate 1401 moves along the guide column 1402, the spring B 1403 is further compressed, the sealing strip 1405 is separated from the embedded groove 601, the connecting pipe 501 is communicated with the resin tank 600, rotate the threaded sleeve 502, the threaded sleeve 502 moves inward relative to the connecting pipe 501, continue to rotate the threaded sleeve 502 until the outer hole of the threaded sleeve 502 contacts the threaded pipe 503, until the outer circle wall thread of the threaded pipe 503 is completely screwed with the outer hole circle wall thread groove of the threaded sleeve 502, the resin tank 200 is installed, the electromagnetic valve B 1200 is opened, the electromagnetic valve A 1000 is closed, the liquid pump 800 works to pump the liquid photosensitive resin in the resin tank 600 into the resin tank 200, then the electromagnetic valve B 1200 is closed, and the 3D printer body 100 is started to print the elastomer. After the elastomer is printed, when the liquid photosensitive resin is recycled, the other side of the resin tank 200 is lifted slightly by the electric push rod 401, the connecting block A 301 rotates relative to the connecting block B 302 with the shaft 303 as the axis, and cooperates with the inclination of the resin tank 200 to make the liquid photosensitive resin in the resin tank 200 flow to the return port of the resin tank 200 for return, the electromagnetic valve A 1000 is opened, the electromagnetic valve B 1200 is in the closed state, the liquid photosensitive resin in the resin tank 200 flows back into the resin tank 600 due to the action of gravity, and then the electromagnetic valve A 1000 is closed. After the liquid photosensitive resin is recycled, the resin tank 200 is adjusted to the horizontal state.

[0067] When the liquid photosensitive resin in the resin tank 600 is used up, the staff pushes the horizontal plate 706 downward by hand, the arc-shaped plate B 704 moves downward and no longer supports the resin tank 600, the resin tank 600 is taken out, the threaded sleeve 502 at the liquid outlet and the liquid inlet of the resin tank 600 is respectively rotated in the reverse direction, the threaded sleeve 502 is separated from the threaded pipe 503, the connecting pipe 501 is pulled out, under the action of the spring B 1403, the sealing plate 1401 is pushed to move along the guide column 1402 until the sealing strip 1405 is inserted into the embedded groove 601, the resin tank 600 is taken out, the liquid photosensitive resin is added into the resin tank 600 through the liquid injection port, the liquid photosensitive resin in the resin tank 600 is supplemented, and finally the resin tank 600 is placed in the 3D printer body 100.

[0068] It will be obvious to a person skilled in the art that, without departing from the spirit or essential characteristics of the application, the present application can be implemented in other specific forms. The present examples are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the description given above, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claim.

Claims

1. An elastomeric 3D printing resin recycling mechanism, characterized by: The 3D printer includes a resin tank (200) mounted on the 3D printer body (100), a resin container (600) mounted inside the 3D printer body (100), and a liquid pump (800). The resin tank (200) has an inlet pipe (1100) with a solenoid valve B (1200) mounted on it. The resin tank (200) has a return pipe (900) with a solenoid valve A (1000) mounted on it. The resin container (600) outlet, the liquid pump (800), and the solenoid valve B (1200), as well as the resin container (600) inlet and the solenoid valve A (1000), are connected by flexible hoses. The resin tank (600) has a connecting structure (500) at both its outlet and inlet. The connecting structure (500) includes a connecting pipe (501), the end of which is connected to a corresponding hose. A threaded sleeve (502) is threaded onto the connecting pipe (501). The threaded sleeve (502) has inner and outer holes. The inner hole of the threaded sleeve (502) is threaded to the outer hole of the connecting pipe (501). The resin tank (600) has a threaded pipe (503) on its outer wall at both its outlet and inlet. The connecting pipe (501) and the threaded pipe (503) are inserted into each other. The outer hole of the threaded pipe (503) is threaded to the outer hole of the threaded sleeve (502). The resin tank (600) has a sealing structure (1400) on the inner wall of both the outlet and inlet. The sealing structure (1400) includes guide posts (1402) and sealing plates (1401). The two guide posts (1402) are symmetrically arranged on the inner wall of the outlet or inlet of the resin tank (600). The two ends of the sealing plate (1401) are respectively sleeved on the two guide posts (1402), and the inner ends of the two guide posts (1402) are respectively... A limiting block (1404) is provided, and a spring B (1403) is provided between the limiting block (1404) and the sealing plate (1401). A sealing strip (1405) is provided on the sealing plate (1401). The sealing strip (1405) is inserted into the embedding groove (601) opened on the inner wall of the liquid outlet or liquid inlet of the resin tank (600). The sealing plate (1401) is pushed into the limiting post (504) at the insertion end of the connecting pipe (501).

2. The elastomeric 3D printing resin recycling mechanism according to claim 1, wherein: The 3D printer body (100) is internally provided with a support structure (700), the support structure (700) comprises a plurality of columns (701), the top ends of the plurality of columns (701) are respectively provided with arc-shaped plates A (702), the plurality of columns (701) are respectively provided with fixed blocks (703), the plurality of fixed blocks (703) are respectively provided with connecting rods (707) penetratingly arranged thereon, the top ends of the plurality of connecting rods (707) are respectively provided with arc-shaped plates B (704), the bottom ends of the plurality of connecting rods (707) are connected with a horizontal plate (706), and the fixed blocks (703) and the arc-shaped plates B (704) are provided with springs A (705) therebetween.

3. The elastomeric 3D printing resin recovery mechanism of claim 2, wherein: The resin tank (200) is connected with the shell of the 3D printer body (100) on one side through a rotating structure (300), the rotating structure (300) comprises connecting blocks A (301), two connecting blocks A (301) are symmetrically arranged on one side of the resin tank (200), the shell of the 3D printer body (100) is provided with a connecting block B (302), and the two ends of the connecting block B (302) are respectively connected with the two connecting blocks A (301) through rotating shafts (303); The resin tank (200) is connected with the shell of the 3D printer body (100) on the other side through a pushing structure (400), the pushing structure (400) comprises an electric push rod (401), the base of the electric push rod (401) is connected with the shell of the 3D printer body (100) through a universal shaft B (403), and the push rod end of the electric push rod (401) is connected with the other side of the resin tank (200) through a universal shaft A (402).

4. The elastomeric 3D printing resin recovery mechanism of claim 3, wherein: Two opposite inclined surfaces (201) are arranged on the inner bottom wall corresponding to the liquid return opening of the resin tank (200), and the low ends of the two inclined surfaces (201) correspond to the liquid return opening.

5. The elastomeric 3D printing resin recycling mechanism of claim 4, wherein: The inner wall of the threaded pipe (503) is provided with a limiting groove (5031), the limiting column (504) is L-shaped, and the horizontal section of the limiting column (504) is inserted into the limiting groove (5031).

6. The 3D printing device with the elastomer 3D printing resin recovery mechanism of any one of claims 3-5.

7. A 3D printing process using the 3D printing device of claim 6, characterized in that: S1, placing the resin tank (200) filled with liquid photosensitive resin in the 3D printer body (100), and connecting the liquid outlet and the liquid inlet of the resin tank (200) with the two connecting structures (500) respectively; S2, opening the electromagnetic valve B (1200), closing the electromagnetic valve A (1000), and working the liquid pump (800) to pump the liquid photosensitive resin in the resin tank (600) into the resin tank (200), then closing the electromagnetic valve B (1200), and starting the 3D printer body (100) to perform 3D printing of the elastomer. S3, after the 3D printing of the elastomer is completed, the other side of the resin tank (200) is lifted by pushing the structure (400), the resin tank (200) is inclined with the rotating structure (300) as the axis, the electromagnetic valve A (1000) is opened, the electromagnetic valve B (1200) is in the closed state, the liquid photosensitive resin in the resin tank (200) flows back into the resin tank (600) from the resin tank (200) return port due to the action of gravity, and then the electromagnetic valve A (1000) is closed.

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