Multifunctional 3D printing equipment

Abstract

The invention discloses multifunctional 3D printing equipment, and particularly relates to the technical field of photocuring printing, the multifunctional 3D printing equipment comprises a printer shell, a curing transparent plate, a support frame and a large-range printing identification mechanism; the large-range printing recognition mechanism comprises a bidirectional screw, a gear motor, two sleeving blocks, a rack, a gear, a rotating shaft, a sleeving block, a linkage strip and an infrared sensor, and further comprises a synchronous shielding mechanism. Through the large-range printing recognition mechanism, the 3D printing device has the advantages that the situation that an operator is not at a station is automatically recognized, shading protection can be conducted on a liquid photosensitive resin material in time, local waste of the liquid photosensitive resin material is avoided, the photocuring 3D printing cost is greatly reduced, and more printing cost is saved; therefore, the problems that the liquid photosensitive resin material is wasted and the 3D printing cost is greatly increased due to the fact that shading protection and suction protection are difficult to carry out on the liquid photosensitive resin material in time are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of photocuring printing, and more specifically, to a multifunctional 3D printing device. Background Art

[0002] The principle of the multifunctional 3D photocuring printing equipment is mainly based on photocuring technology, which uses ultraviolet light to irradiate liquid photosensitive resin materials layer by layer, causing them to undergo a chemical reaction under the action of light, curing from a liquid state to a solid state, thereby constructing a complete three-dimensional object layer by layer.

[0003] After searching the existing public documents, the Chinese patent announcement number CN112757628A discloses a multifunctional light-curing 3D printing device, which is mainly set between the upright light-curing module and the inverted light-curing module through an optical engine and a reflective sheet. In the above scheme, the inverted light-curing module and the upright light-curing module are added to the light-curing 3D printing device at the same time, which can make full use of the advantages of two different printing methods according to actual needs, and realize the optimal printing scheme according to the model needs on one machine, which greatly improves the use value and functionality of the equipment and realizes the multifunctionality of the 3D printer. However, the 3D printing device still has the following defects when in use.

[0004] In the process of multifunctional light-curing 3D printing, although the ultraviolet light source is used to irradiate the liquid photosensitive resin material layer by layer for printing, the liquid photosensitive resin material will still remain in the tank after printing. Once the personnel forget to perform light-shielding treatment on the liquid photosensitive resin material, or forget to collect the liquid photosensitive resin material, this will cause the liquid photosensitive resin material to be exposed to the outdoors for a long time. In this way, the liquid photosensitive resin material will be partially solidified under the influence of external light and external temperature. It is difficult to automatically identify that the operator is not at the workstation, and it is difficult to timely perform light-shielding protection and inhalation protection on the liquid photosensitive resin material, resulting in waste of liquid photosensitive resin material and a significant increase in the cost of 3D printing. For this reason, a multifunctional 3D printing device is needed. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides the following technical solutions: a multifunctional 3D printing device, comprising a printer housing, a curing transparent plate and a support frame, wherein the curing transparent plate is fixed to the inner wall of the printer housing, the support frame is fixed to one side of the outer wall of the printer housing, and a large-scale printing recognition mechanism is installed inside the support frame; the large-scale printing recognition mechanism comprises a bidirectional screw rotatably installed inside the support frame, and a reduction motor is fixedly connected to one side of the inner wall of the support frame, the reduction motor is used to drive the bidirectional screw to rotate, and the outer wall of the bidirectional screw is threadedly connected to two sleeve blocks, and the lower surface of each sleeve block is fixedly connected to a rack. One side of each rack is meshed and connected with a gear, the inner wall of the gear is fixedly connected with a rotating shaft, and a sleeve block is rotatably connected at the bottom end of the gear, the sleeve block is fixedly connected to the printer housing, the rotating shaft is rotatably connected to the sleeve block, the bottom end of the rotating shaft is fixedly connected with a linkage bar, and one end of the linkage bar is fixedly connected with an infrared sensor, and one side of one of the linkage bars is fixedly connected with a displacement distance sensor; a synchronous shielding mechanism is provided on the other side of the outer wall of the printer housing.

[0006] Preferably, the output end of the reduction motor is fixedly connected to the bidirectional screw, the two threads of the outer wall of the bidirectional screw are opposite and symmetrically arranged, the two sleeve blocks are slidably connected to the support frame, the rack is slidably connected to the sleeve block, a controller is provided below the support frame, and the controller is fixedly connected to the printer housing; a resin holding bucket is provided on the upper surface of the curing transparent plate, and the resin holding bucket is used to hold liquid photosensitive resin, a rotating motor is fixedly installed on the top of the printer housing, and a lifting screw is fixedly connected to the output end of the rotating motor, and the lifting screw is rotatably connected to the printer housing; The outer wall of the lifting screw is threadedly connected with a threaded sleeve, and a guide column is provided on one side of the lifting screw. The guide column is fixedly connected to the printer housing, and the guide column is slidably connected to the threaded sleeve. The upper surface of the threaded sleeve is fixedly connected to a lifting plate by bolts. The inner wall of the printer housing is fixedly connected with a push electric cylinder at a position below the curing transparent plate. The output end of the push electric cylinder is fixedly connected to a slide frame. A position shifting motor is fixedly connected to one side of the inner wall of the slide frame. The output end of the position shifting motor is fixedly connected to a position shifting screw, and the outer wall of the position shifting screw is threadedly connected with a sleeve slider. The top of the sleeve slider is fixedly connected with an ultraviolet laser. The sleeve slider is slidably connected to the slide frame.

[0007] When this technology is in use, the reduction motor drives the bidirectional screw to rotate forward, the bidirectional screw drives the two socket blocks to move away from each other under the action of the thread transmission force, the socket block drives the rack to move left, the gear drives the shaft to rotate counterclockwise, the shaft drives the linkage bar to rotate counterclockwise, and the other linkage bar rotates clockwise. The infrared sensor can sense the operator on the left side of the printer housing, and the other infrared sensor can sense the operator on the right side of the printer housing. When the distance value sensed by the displacement distance sensor is the same as the distance value set by the controller, the bidirectional screw is driven to reverse through the reduction motor. The bidirectional screw drives the two socket blocks to move closer to each other under the action of the thread transmission force, the socket block drives the rack to make the gear rotate clockwise, and the linkage bar drives the infrared sensor to rotate clockwise. As the reduction motor continuously switches and rotates forward and reverse, the two linkage bars respectively drive the two infrared sensors to sense the operator on both sides of the outside of the printer housing.

[0008] Preferably, the synchronous shielding mechanism includes a sliding frame fixedly arranged on the other side of the outer wall of the printing housing; a linkage electric cylinder is fixedly connected to one side of the sliding frame, and a hinge block is fixedly connected to the output end of the linkage electric cylinder, and two connecting shafts are fixedly connected to one side of the inner wall of the hinge block, and the outer wall of each connecting shaft is rotatably connected to a sleeve rod, and the inner wall of the sleeve rod is rotatably connected to a hinge shaft at a position away from the connecting shaft, and an hinge sleeve block is fixedly connected to one end of the hinge shaft; a guide rod is slidably connected to the inner wall of the hinge sleeve block, and the guide rod is fixedly connected to the sliding frame, and a connecting strip is fixedly connected to one end of the connecting strip, and a sun visor is fixedly connected to the inner wall of one of the sun visors; a docking storage mechanism is provided on the inner wall of one of the sun visors, the vertical cross-section of the hinge block is concave, and the vertical cross-sections of the connecting shaft and the hinge shaft are both circular; the center point of the connecting shaft is higher than the center point of the hinge shaft, and the two hinge sleeve blocks are both slidably connected to the sliding frame, and the outer wall of the hinge sleeve block and the inner wall of the sliding frame are both smooth surfaces.

[0009] When this technology is used, the linkage electric cylinder drives the articulated block to move upward, the articulated block makes the two connecting shafts move upward synchronously, the articulated shaft drives the articulated sleeve block to move leftward, the articulated sleeve block slides leftward along the outer wall of the guide rod, the articulated sleeve block drives the connecting strip to move leftward, the sun visor can move leftward to cover the top of the resin loading bucket, and the other sun visor moves rightward to cover the top of the resin loading bucket. The two sun visors can perform light shielding operations on the liquid photosensitive resin inside the resin loading bucket.

[0010] Preferably, the docking storage mechanism comprises a straight tube slidably arranged on the inner wall of one of the sun visors; a hose is fixedly connected to the top of the straight tube, a recovery box is fixedly connected to the outer wall of the hose, a negative pressure fan is provided on one side of the hose, the negative pressure fan is fixedly connected to the recovery box, and the recovery box is fixedly connected to the sun visor; The outer wall of the straight tube is fixedly connected with a sleeve strip, and one end of the sleeve strip is fixedly connected with a linkage sleeve block, the inner wall of the linkage sleeve block is threadedly connected with a driving screw, the outer wall of the linkage sleeve block is slidably connected with a guide frame, and the guide frame is fixedly connected with the sun visor, and the top of the guide frame is fixedly connected with a transmission motor, and the transmission motor is used to drive the driving screw to rotate. The outer wall of the linkage sleeve block is slidably connected with the guide frame, and the inner wall of the guide frame and the outer wall of the linkage sleeve block are both smooth surfaces.

[0011] When the technology is in use, the transmission motor causes the driving screw to rotate, the linkage block slides downward along the inner wall of the guide frame, the strip causes the straight tube to move downward, and the straight tube slides downward along the inner wall of the sun visor. When there is a gap between the bottom end of the straight tube and the bottom end of the inner wall of the resin receiving bucket, the negative pressure fan creates a negative pressure state inside the recovery box, so that the straight tube sucks the remaining liquid photosensitive resin inside the resin receiving bucket into the hose, preventing the liquid photosensitive resin inside the resin receiving bucket from being exposed to the outdoors.

[0012] Technical effects and advantages of the present invention: 1. The present invention uses a large-scale printing identification mechanism. The reduction motor drives the bidirectional screw to rotate forward, the socket block moves to the left, and the other socket block moves to the right. The linkage bar drives the infrared sensor to rotate counterclockwise. When the distance value sensed by the displacement distance sensor is the same as the distance value set by the controller, the reduction motor drives the bidirectional screw to reverse, and the bidirectional screw drives the two socket blocks to approach each other under the action of the thread transmission force. The socket block drives the rack to rotate the gear clockwise. As the reduction motor continuously switches and rotates forward and backward, the two linkage bars respectively drive the two infrared sensors to sense the operators on both sides of the outside of the printer housing, which can automatically identify that the operator is not at the workstation, and can timely perform light shielding protection on the liquid photosensitive resin material to avoid local waste of the liquid photosensitive resin material. The cost of photocuring 3D printing is greatly reduced, and the printing cost is further saved.

[0013] 2. The present invention adopts a synchronous shielding mechanism, the linkage electric cylinder drives the hinge block to move upward, the connecting shaft drives the top of the sleeve rod to move upward, the sleeve rod drives the hinge shaft to move left, and the other hinge shaft moves right, the hinge sleeve block slides left along the inner wall of the sliding frame, the sun visor can move left to cover the top of the resin receiving bucket, and the other sun visor moves right to cover the top of the resin receiving bucket. The two sun visors can perform light shielding operations on the liquid photosensitive resin inside the resin receiving bucket, so that it automatically recognizes that the operator is not at the workstation. When the time to leave the printer shell is reached, the liquid photosensitive resin material is promptly shielded from light to avoid local curing or failure of the liquid photosensitive resin material under external light or other influences.

[0014] 3. The present invention utilizes a docking storage mechanism. When the two infrared sensors still fail to identify the operator and the time exceeds the time set by the controller, the transmission motor rotates the driving screw, and the driving screw drives the linkage sleeve to move downward under the action of the thread transmission force. The sleeve strip moves the straight tube downward, and the straight tube slides downward along the inner wall of the sun visor. When there is a gap between the bottom end of the straight tube and the bottom end of the inner wall of the resin holding bucket, the negative pressure fan is started by the controller, and the fan enters the insulation container inside the recovery box through the hose, so that the liquid photosensitive resin inside the resin holding bucket is not exposed to the outdoors, thereby avoiding being affected by the outdoor temperature, fully protecting the remaining liquid photosensitive resin inside the resin holding bucket, avoiding local waste of liquid photosensitive resin materials, and greatly reducing the cost of photocuring 3D printing, thereby saving printing costs.

[0015] Based on the mutual influence of the above-mentioned multiple functions, first, the two linkage bars respectively drive the two infrared sensors to sense the operators on both sides of the outside of the printer shell, and timely identify that the operator is not at the workstation in a large area, and then enable the two sunshades to shield the liquid photosensitive resin inside the resin holding bucket. Finally, when there is a gap between the bottom end of the straight tube and the bottom end of the inner wall of the resin holding bucket, the liquid photosensitive resin enters the recycling box through the hose for insulation and storage. In summary, it can automatically identify that the operator is not at the workstation, and timely protect the liquid photosensitive resin material from light shielding and inhalation, avoiding local waste of liquid photosensitive resin materials, greatly reducing the cost of photocuring 3D printing, and saving more photocuring printing costs.

[0016] Therefore, it can not only perform multi-point printing functions, but also identify that the operator is not at the workstation, and protect the liquid photosensitive resin material in time, thus realizing multifunctional 3D printing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the multifunctional 3D printing device of the present invention.

[0018] Figure 2 It is a schematic diagram of the partial structure of the connection between the printer housing and the support frame of the present invention.

[0019] Figure 3 It is a schematic diagram of the partial structure of the connection between the linkage strip and the infrared sensor of the present invention.

[0020] Figure 4 It is a schematic diagram of the vertical cross-section structure of the multifunctional 3D printing device of the present invention.

[0021] Figure 5 It is a schematic diagram of the local structure of the connection between the position-changing screw rod and the position-changing motor of the present invention.

[0022] Figure 6It is a schematic diagram of the rear view structure of the multifunctional 3D printing device of the present invention.

[0023] Figure 7 For the present invention Figure 6 Enlarged structural diagram at A in the middle.

[0024] Figure 8 It is a schematic diagram of the partial structure of the connection between the connecting strip and the sun visor of the present invention.

[0025] Fig. 9 It is a schematic diagram of the local structure of the vertical section of the connection between the sun visor and the recovery box of the present invention.

[0026] Fig.10 It is a schematic diagram of the partial structure of the connection between the straight tube and the sleeve strip of the present invention.

[0027] The accompanying drawings are marked as follows: 1, printer housing; 2, curing transparent plate; 3, support frame; 4, bidirectional screw; 5, reduction motor; 6, sleeve block; 7, rack; 8, gear; 9, rotating shaft; 10, sleeve block; 11, linkage bar; 12, infrared sensor; 13, displacement distance sensor; 14, controller; 15, resin loading bucket; 16, rotating motor; 17, lifting screw; 18, threaded sleeve block; 19, guide column; 20, lifting plate; 21, pushing electric cylinder; 22, sliding frame; 23, Positioning motor; 24. Positioning screw; 25. Sleeve slider; 26. UV laser; 27. Sliding frame; 28. Linkage electric cylinder; 29. ​​Articulated block; 30. Connecting shaft; 31. Sleeve rod; 32. Articulated shaft; 33. Articulated sleeve block; 34. Guide rod; 35. Connecting strip; 36. Sun visor; 37. Straight pipe; 38. Hose; 39. Recovery box; 40. Negative pressure fan; 41. Sleeve strip; 42. Linkage sleeve block; 43. Driving screw; 44. Guide frame; 45. Transmission motor. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] As attached Figure 1-10A multifunctional 3D printing device is shown, which has a large-range printing recognition mechanism, a synchronous shielding mechanism, and a docking storage mechanism. The settings of each mechanism can automatically recognize that the operator is not at the workstation, and timely perform light shielding and suction protection on the liquid photosensitive resin material to avoid local waste of liquid photosensitive resin material. The cost of photocuring 3D printing is greatly reduced, and the cost of photocuring printing is further saved. The specific structural settings of each mechanism are as follows.

[0030] In this embodiment, as shown in the attached Figure 1-4 As shown, the curing transparent plate 2 is fixed on the inner wall of the printer housing 1, the support frame 3 is fixed on one side of the outer wall of the printer housing 1, and a large-scale printing recognition mechanism is installed inside the support frame 3; the large-scale printing recognition mechanism includes a bidirectional screw 4 rotatably installed inside the support frame 3, and a reduction motor 5 is fixedly connected to one side of the inner wall of the support frame 3, and the reduction motor 5 is used to drive the bidirectional screw 4 to rotate, and the outer wall of the bidirectional screw 4 is threadedly connected to two sleeve blocks 6, and the lower surface of each sleeve block 6 is fixedly connected to a rack 7. One side of each rack 7 is meshed and connected to a gear 8, and the inner wall of the gear 8 is fixedly connected to a rotating shaft 9, and a sleeve block 10 is rotatably connected at the bottom end of the gear 8, and the sleeve block 10 is fixedly connected to the printer housing 1, and the rotating shaft 9 is rotatably connected to the sleeve block 10, and the bottom end of the rotating shaft 9 is fixedly connected to a linkage bar 11, and one end of the linkage bar 11 is fixedly connected to an infrared sensor 12, and a displacement distance sensor 13 is fixedly connected to one side of one of the linkage bars 11, and a synchronous shielding mechanism is provided on the other side of the outer wall of the printer housing 1.

[0031] In this embodiment, as shown in the attached Figure 1-5 As shown, a controller 14 is provided below the support frame 3, and the controller 14 is fixedly connected to the printer housing 1; a resin containing bucket 15 is provided on the upper surface of the curing transparent plate 2, and the resin containing bucket 15 is used to contain liquid photosensitive resin; a rotating motor 16 is fixedly installed on the top of the printer housing 1, and a lifting screw 17 is fixedly connected to the output end of the rotating motor 16, and the lifting screw 17 is rotationally connected to the printer housing 1; a threaded sleeve 18 is threadedly connected to the outer wall of the lifting screw 17, and a guide column 19 is provided on one side of the lifting screw 17, the guide column 19 is fixedly connected to the printer housing 1, and the guide column 19 is slidably connected to the threaded sleeve 18, and a lifting plate 20 is fixedly connected to the upper surface of the threaded sleeve 18 by bolts.

[0032] A pushing electric cylinder 21 is fixedly connected to the inner wall of the printer housing 1 and located below the curing transparent plate 2, and a sliding frame 22 is fixedly connected to the output end of the pushing electric cylinder 21. A position shifting motor 23 is fixedly connected to one side of the inner wall of the sliding frame 22, and a position shifting screw 24 is fixedly connected to the output end of the position shifting motor 23. A sleeve sliding block 25 is threadedly connected to the outer wall of the position shifting screw 24, and a UV laser 26 is fixedly connected to the top of the sleeve sliding block 25; the sleeve sliding block 25 is slidably connected to the sliding frame 22.

[0033] In this embodiment, as shown in the attached Figure 6-8 As shown, the synchronous shielding mechanism includes a sliding frame 27 fixedly arranged on the other side of the outer wall of the printer housing 1; a linkage electric cylinder 28 is fixedly connected to one side of the sliding frame 27, and a hinge block 29 is fixedly connected to the output end of the linkage electric cylinder 28, and two connecting shafts 30 are fixedly connected to one side of the inner wall of the hinge block 29, and the outer wall of each connecting shaft 30 is rotatably connected to a sleeve rod 31, and an articulation shaft 32 is rotatably connected to the inner wall of the sleeve rod 31 and away from the connecting shaft 30, and an articulation sleeve block 33 is fixedly connected to one end of the articulation shaft 32.

[0034] The inner wall of the articulated sleeve 33 is slidably connected with a guide rod 34, and the guide rod 34 is fixedly connected to the sliding frame 27. A connecting strip 35 is fixedly connected to one side of each articulated sleeve 33, and a sun visor 36 is fixedly connected to one end of the connecting strip 35; a docking storage mechanism is provided on the inner wall of one of the sun visors 36. The vertical cross-section of the articulated block 29 is concave, and the vertical cross-sections of the connecting shaft 30 and the articulated shaft 32 are both circular; the center point of the connecting shaft 30 is higher than the center point of the articulated shaft 32. Both articulated sleeves 33 are slidably connected to the sliding frame 27, and the outer wall of the articulated sleeve 33 and the inner wall of the sliding frame 27 are smooth surfaces.

[0035] In this embodiment, as shown in the attached Figure 8-10 As shown, the docking storage mechanism includes a straight tube 37 slidably arranged on the inner wall of one of the sun visors 36; the top of the straight tube 37 is fixedly connected to a hose 38, and the outer wall of the hose 38 is fixedly connected to a recovery box 39, and a negative pressure fan 40 is provided on one side of the hose 38, the negative pressure fan 40 is fixedly connected to the recovery box 39, and the recovery box 39 is fixedly connected to the sun visor 36.

[0036] The outer wall of the straight tube 37 is fixedly connected to a sleeve strip 41, and one end of the sleeve strip 41 is fixedly connected to a linkage sleeve block 42, the inner wall of the linkage sleeve block 42 is threadedly connected to a driving screw 43, a guide frame 44 is slidably connected to the outer wall of the linkage sleeve block 42, and the guide frame 44 is fixedly connected to the sun visor 36, a transmission motor 45 is fixedly connected to the top of the guide frame 44, the transmission motor 45 is used to drive the driving screw 43 to rotate, the outer wall of the linkage sleeve block 42 is slidably connected to the guide frame 44, and the inner wall of the guide frame 44 and the outer wall of the linkage sleeve block 42 are both smooth surfaces.

[0037] The working principle of the multifunctional 3D printing device of the present invention is as follows: Step 1. During 3D photocuring printing, pour liquid photosensitive resin into the resin holding bucket 15 to a depth of four-fifths of the resin holding bucket 15. Start the rotary motor 16, which drives the lifting screw 17 to rotate forward. The lifting screw 17 rotates inside the printer housing 1. At the same time, the lifting screw 17 drives the threaded sleeve 18 to move downward under the action of the thread transmission force. The threaded sleeve 18 slides down along the outer wall of the guide column 19. At the same time, the threaded sleeve 18 causes the lifting plate 20 to move downward to the bottom end of the inner wall of the resin holding bucket 15.

[0038] By starting the push electric cylinder 21 in the controller 14, the push electric cylinder 21 pushes the slide frame 22 to move left, and at the same time turns on the ultraviolet laser 26, and starts the displacement motor 23 to drive the displacement screw 24 to rotate, the displacement screw 24 drives the sleeve slider 25 to move under the action of the thread transmission force, and the sleeve slider 25 drives the ultraviolet laser 26 to move, and the ultraviolet laser 26 can perform ultraviolet light curing on the liquid photosensitive resin inside the resin holding bucket 15 through the curing transparent plate 2, so as to perform ultraviolet light curing of different paths. At the same time, the controller 14 starts the rotating motor 16 to drive the lifting screw 17 to reverse, and the lifting screw 17 drives the threaded sleeve 18 to move up under the action of the thread transmission force, and the threaded sleeve 18 slides up along the outer wall of the guide column 19, and the threaded sleeve 18 drives the lifting plate 20 to move up along the inside of the resin holding bucket 15, so that as the ultraviolet laser 26 continuously performs light curing on the liquid photosensitive resin, 3D light curing printing is realized, and 3D printing functions in different directions can be performed. When the threaded sleeve 18 drives the lifting plate 20 to move up to the highest point, the controller 14 can stop the driving of the rotary motor 16. When the operator forgets to cover the top of the resin holding bucket 15, or the operator forgets to collect and process the liquid photosensitive resin inside the resin holding bucket 15.

[0039] Step 2: During large-scale printing and identification, when the rotating motor 16 is not driven, after the controller 14 sets the timing time for twenty minutes, the controller 14 starts the reduction motor 5, which drives the bidirectional screw 4 to rotate forward. The bidirectional screw 4 drives the two socket blocks 6 to move away from each other under the action of the thread transmission force. The socket block 6 moves to the left, and the other socket block 6 moves to the right. The socket block 6 drives the rack 7 to move to the left, and the rack 7 makes the gear 8 rotate counterclockwise. The gear 8 drives the shaft 9 to rotate counterclockwise. The shaft 9 rotates counterclockwise inside the sleeve block 10. The shaft 9 drives the linkage bar 11 to rotate counterclockwise, while the other linkage bar 11 rotates clockwise. The linkage bar 11 drives the infrared sensor 12 to rotate counterclockwise. The infrared sensor 12 can sense the operator on the left side of the printer housing 1, while the other infrared sensor 12 can sense the operator on the right side of the printer housing 1. When the linkage bar 11 drives the displacement distance sensor 13 to rotate counterclockwise, the displacement distance sensor 13 senses the distance on the left side of the other linkage bar 11. When the distance value sensed by the displacement distance sensor 13 is the same as the distance value set by the controller 14 , the reduction motor 5 drives the bidirectional screw 4 to reverse.

[0040] The bidirectional screw 4 drives the two socket blocks 6 to approach each other under the action of the thread transmission force, the socket block 6 moves right, and the other socket block 6 moves left. The socket block 6 drives the rack 7 to make the gear 8 rotate clockwise, and the gear 8 drives the rotating shaft 9 to make the linkage bar 11 rotate clockwise. The linkage bar 11 drives the infrared sensor 12 to rotate clockwise. As the reduction motor 5 continuously switches forward and reverse, the two linkage bars 11 respectively drive the two infrared sensors 12 to sense the operator on both sides of the outside of the printer housing 1. When the two infrared sensors 12 do not sense the operator and the shielding time set by the controller 14 is exceeded, the linkage electric cylinder 28 is started by the controller 14.

[0041] Step three, during synchronous shielding, the linkage electric cylinder 28 drives the hinge block 29 to move upward, and the hinge block 29 makes the two connecting shafts 30 move upward synchronously, the connecting shaft 30 drives the top end of the sleeve rod 31 to move upward, and the sleeve rod 31 drives the hinge shaft 32 to move to the left, and the other hinge shaft 32 moves to the right, the hinge shaft 32 drives the hinge sleeve block 33 to move left, the hinge sleeve block 33 slides to the left along the outer wall of the guide rod 34, and the hinge sleeve block 33 slides to the left along the inner wall of the sliding frame 27, the hinge sleeve block 33 drives the connecting strip 35 to move left, and the connecting strip 35 drives the sun visor 36 to move left, the sun visor 36 can move to the left to cover the top of the resin receiving bucket 15, and the other sun visor 36 moves to the right to cover the top of the resin receiving bucket 15. The two sunshades 36 can block the liquid photosensitive resin inside the resin holding bucket 15. After blocking the light, the controller 14 closes the linked electric cylinder 28. When the two infrared sensors 12 still fail to identify the operator and the time exceeds the forty minutes set by the controller 14, the controller 14 continues to start the transmission motor 45.

[0042] Step 4. During docking storage, the transmission motor 45 causes the driving screw 43 to rotate, and the driving screw 43 drives the linkage sleeve 42 to move downward under the action of the thread transmission force, and the linkage sleeve 42 slides downward along the inner wall of the guide frame 44, and the linkage sleeve 42 can simultaneously drive the sleeve strip 41 to move downward, and the sleeve strip 41 causes the straight tube 37 to move downward, and the straight tube 37 slides downward along the inner wall of the sun visor 36, so that the straight tube 37 can be inserted into the resin holding bucket 15. When there is a gap between the bottom end of the straight tube 37 and the bottom end of the inner wall of the resin holding bucket 15, the negative pressure fan 40 is started by the controller 14.

[0043] The negative pressure fan 40 creates a negative pressure state inside the recovery box 39, so that the straight pipe 37 sucks the remaining liquid photosensitive resin inside the resin holding bucket 15 into the hose 38, and enters the recovery box 39 through the hose 38 for insulation, thereby preventing the liquid photosensitive resin inside the resin holding bucket 15 from being exposed to the outdoors, thereby avoiding being affected by the outdoor temperature and causing the liquid photosensitive resin to fail. The remaining liquid photosensitive resin inside the resin holding bucket 15 is fully protected, facilitating subsequent normal use and avoiding partial curing failure.

[0044] The contents not described in detail in the specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used. In this technical solution, the electrical control components not mentioned are not shown in the figure because they belong to the prior art and will not be described here.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multifunctional 3D printing device, comprising a printer housing (1), a curing transparent plate (2) and a support frame (3), wherein the curing transparent plate (2) is fixed to the inner wall of the printer housing (1), and the support frame (3) is fixed to one side of the outer wall of the printer housing (1). Features: A large-scale printing and identification mechanism is installed inside the support frame (3); The large-scale printing recognition mechanism comprises a bidirectional screw (4) rotatably mounted inside a support frame (3), and a reduction motor (5) is fixedly connected to one side of the inner wall of the support frame (3), the reduction motor (5) is used to drive the bidirectional screw (4) to rotate, and the outer wall of the bidirectional screw (4) is threadedly connected to two sleeve blocks (6), and the lower surface of each sleeve block (6) is fixedly connected to a rack (7); One side of each rack (7) is meshed and transmission-connected with a gear (8); the inner wall of the gear (8) is fixedly connected with a rotating shaft (9); a sleeve block (10) is rotatably connected to the bottom end of the gear (8); the sleeve block (10) is fixedly connected to the printer housing (1); the rotating shaft (9) and the sleeve block (10) are rotatably connected; a linkage bar (11) is fixedly connected to the bottom end of the rotating shaft (9); an infrared sensor (12) is fixedly connected to one end of the linkage bar (11); and a displacement distance sensor (13) is fixedly connected to one side of one of the linkage bars (11); A synchronous shielding mechanism is provided on the other side of the outer wall of the printer housing (1).

2. The multifunctional 3D printing device according to claim 1, Features: The output end of the reduction motor (5) is fixedly connected to the bidirectional screw (4), and the two threads on the outer wall of the bidirectional screw (4) are opposite and symmetrically arranged.

3. The multifunctional 3D printing device according to claim 1, Features: The two sleeve blocks (6) are both slidably connected to the support frame (3), and the rack (7) is slidably connected to the sleeve block (10).

4. The multifunctional 3D printing device according to claim 1, Features: A controller (14) is provided below the support frame (3), and the controller (14) is fixedly connected to the printer housing (1); The upper surface of the curing transparent plate (2) is provided with a resin containing bucket (15), and the resin containing bucket (15) is used to contain liquid photosensitive resin. A rotating motor (16) is fixedly mounted on the top of the printer housing (1), and an elevating screw (17) is fixedly connected to the output end of the rotating motor (16), and the elevating screw (17) is rotatably connected to the printer housing (1); The outer wall of the lifting screw (17) is threadedly connected to a threaded sleeve (18), and a guide column (19) is provided on one side of the lifting screw (17). The guide column (19) is fixedly connected to the printer housing (1), and the guide column (19) is slidably connected to the threaded sleeve (18). The upper surface of the threaded sleeve (18) is fixedly connected to a lifting plate (20) by bolts.

5. The multifunctional 3D printing device according to claim 1, Features: A driving electric cylinder (21) is fixedly connected to the inner wall of the printer housing (1) and located below the curing transparent plate (2); the output end of the driving electric cylinder (21) is fixedly connected to a slide frame (22); a position changing motor (23) is fixedly connected to one side of the inner wall of the slide frame (22); a position changing screw (24) is fixedly connected to the output end of the position changing motor (23); and a sleeve sliding block (25) is threadedly connected to the outer wall of the sleeve sliding block (24); and a UV laser (26) is fixedly connected to the top end of the sleeve sliding block (25); The sleeve sliding block (25) is slidably connected to the sliding frame (22).

6. The multifunctional 3D printing device according to claim 1, Features: The synchronous shielding mechanism comprises a sliding frame (27) fixedly arranged on the other side of the outer wall of the printer housing (1); A linkage electric cylinder (28) is fixedly connected to one side of the sliding frame (27); a hinge block (29) is fixedly connected to the output end of the linkage electric cylinder (28); two connection shafts (30) are fixedly connected to one side of the inner wall of the hinge block (29); a sleeve rod (31) is rotatably connected to the outer wall of each connection shaft (30); a hinge shaft (32) is rotatably connected to the inner wall of the sleeve rod (31) at a position away from the connection shaft (30); and a hinge sleeve block (33) is fixedly connected to one end of the hinge shaft (32); The inner wall of the hinged sleeve (33) is slidably connected to a guide rod (34), and the guide rod (34) is fixedly connected to the sliding frame (27); one side of each hinged sleeve (33) is fixedly connected to a connecting strip (35), and one end of the connecting strip (35) is fixedly connected to a sunshade (36); A docking storage mechanism is provided on the inner wall of one of the sunshades (36).

7. The multifunctional 3D printing device according to claim 6, Features: The vertical cross-section of the hinge block (29) is concave, and the vertical cross-sections of the connecting shaft (30) and the hinge shaft (32) are both circular; The center point of the connecting shaft (30) is higher than the center point of the hinge shaft (32).

8. The multifunctional 3D printing device according to claim 6, Features: The two hinged sleeves (33) are both slidably connected to the sliding frame (27), and the outer wall of the hinged sleeve (33) and the inner wall of the sliding frame (27) are both smooth surfaces.

9. The multifunctional 3D printing device according to claim 6, Features: The docking storage mechanism comprises a straight tube (37) slidably arranged on the inner wall of one of the sun visors (36); The top end of the straight tube (37) is fixedly connected to a hose (38), the outer wall of the hose (38) is fixedly connected to a recovery box (39), a negative pressure fan (40) is provided on one side of the hose (38), the negative pressure fan (40) is fixedly connected to the recovery box (39), and the recovery box (39) is fixedly connected to the sun visor (36); The outer wall of the straight tube (37) is fixedly connected to a sleeve strip (41), and one end of the sleeve strip (41) is fixedly connected to a linkage sleeve block (42), the inner wall of the linkage sleeve block (42) is threadedly connected to a driving screw (43), a guide frame (44) is slidably connected to the outer wall of the linkage sleeve block (42), and the guide frame (44) is fixedly connected to the sun visor (36), and a transmission motor (45) is fixedly connected to the top end of the guide frame (44), and the transmission motor (45) is used to drive the driving screw (43) to rotate.

10. The multifunctional 3D printing device according to claim 9, Features: The outer wall of the linkage sleeve (42) is slidably connected to the guide frame (44), and the inner wall of the guide frame (44) and the outer wall of the linkage sleeve (42) are both smooth surfaces.

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