A convenient three-dimensional printing device

Abstract

The present invention discloses a convenient three-dimensional printing device, comprising: a housing, a cover plate and a motor are installed on the top surface of the housing; a detection disk, the detection disk is placed between convex rings; a printing disk, a rotating shaft is welded at the center of the bottom surface of the printing disk; a nozzle assembly, slidably mounted on a lifting cylinder, the lifting cylinder is located above the printing disk; a measuring bar, the measuring bar passes through the through hole; a scanning assembly, screwed and fixed on a mounting seat, the mounting seat is sleeved on a screw rod; a partition, a convex ring is arranged on the inner wall of the partition. The convenient three-dimensional printing device uses a driving gear to drive the detection disk to rotate, so that the scanning assembly can scan the object around, uses a screw rod and a motor to drive the scanning assembly to move up and down, so that the scanning assembly can scan the object at different heights, uses the measuring bar on the detection disk to shape the bottom surface of the object, and the scanning assembly scans the protruding shape of the measuring bar instead of scanning the bottom surface of the object.

Description

Technical Field

[0001] The present invention relates to the technical field related to three-dimensional printing equipment, and in particular to a three-dimensional printing device that is easy to use. Background Art

[0002] Three-dimensional printing generally refers to 3D printing, which is a type of rapid prototyping technology. It is a technology that uses digital model files as the basis, uses powdered metal or plastic and other bondable materials to construct objects by printing layer by layer.

[0003] Before performing 3D printing, it is necessary to first create a 3D model of the printed object on a computer. Traditional modeling uses computer simulation drawing, which has high requirements for users. In the existing technology, 3D modeling mostly uses stereo scanning technology to directly scan the physical object through a scanner.

[0004] However, when scanning physical objects, existing 3D printing devices require manual adjustment of the physical object or the orientation of the scanner in order to achieve all-round scanning. In this process, a large number of scanning overlapping areas are easily generated, and the manual placement accuracy is low, requiring the use of 3D software for post-processing, resulting in low printing efficiency. Summary of the invention

[0005] In order to fill the gap in the market, the present invention provides a three-dimensional printing device that is easy to use.

[0006] The purpose of the present invention is to provide an easy-to-use three-dimensional printing device to solve the problem that the existing three-dimensional printing device proposed in the above background technology needs to manually adjust the orientation of the object or the scanner when scanning the object in order to achieve omnidirectional scanning. In this process, a large number of scanning overlapping areas are easily generated, and the manual placement accuracy is low, and the use of three-dimensional software for post-processing is required, resulting in low printing efficiency.

[0007] To achieve the above object, the present invention provides the following technical solution: a convenient three-dimensional printing device, comprising:

[0008] A casing, wherein a cover plate and a motor are installed on the top surface of the casing, a sliding door is slidably installed on the side plate of the casing, and a partition is arranged inside the casing;

[0009] A detection plate, the detection plate is placed between the convex rings, a through hole is opened on the detection plate, and a lamp bead is embedded on the bottom surface of the detection plate;

[0010] A printing disc, wherein a rotating shaft is welded at the center of the bottom surface of the printing disc, the lower end of the rotating shaft is inserted into a sleeve, and teeth are arranged on the circumferential surface of the printing disc;

[0011] A nozzle assembly is slidably mounted on a lifting cylinder, the lifting cylinder is located above the printing plate, and both ends of the lifting cylinder are connected to a mechanical arm;

[0012] A measuring bar, the measuring bar passes through the through hole, two ends of the measuring bar are respectively welded to a photoelectric sensor and a magnetic block, and a spiral groove is provided on the outer surface of the measuring bar;

[0013] The scanning assembly is screwed and fixed on the mounting seat, the mounting seat is sleeved on the screw, and the bottom of the screw is sleeved with a synchronous wheel;

[0014] A partition, wherein a convex ring is arranged on the inner wall of the partition, and a groove is arranged on the partition between the convex rings;

[0015] The scanning assembly includes: a scanning window, a scanning head, a motion controller, a DC motor, a slide rail and a rack; the computer sends a command to the motion controller, the controller starts the laser and the motor, the motor drives the lead screw to rotate through the synchronous belt, thereby realizing the movement of the scanning head, the position of the scanning head during movement is measured by the angle sensor, the noise filter is an optional hardware module, used to realize the synchronization of the exposure of the camera and the working time of the laser, the computer notifies the control unit to start scanning through the USB data channel, the control unit sends a drive signal to drive the motor to move, drive the moving parts to move on the guide rail, the moving parts are equipped with a CCD sensor, an image acquisition system and a structured light, so that the system can move along the sole direction. The structured light signal modulated by the sole surface is reflected to the CCD sensor, when the CCD sensor receives the acquisition command issued by the PC, it starts to collect images, and sends the acquisition synchronization signal to the scanning synchronization circuit at the same time, the CCD sensor converts the optical signal into an electrical signal and transmits it to the image acquisition system, the image acquisition system converts the obtained image into a digital signal through AD conversion and sends it back to the PC through the USB data channel. In this way, the PC obtains an image carrying the sole information.

[0016] Furthermore, a discharge port and a material taking port are respectively provided on the top plate and the right side plate of the casing, and the discharge port and the material taking port correspond to the cover plate and the sliding door respectively. The discharge port is located directly above the detection disk, and the material taking port is close to the printing disk.

[0017] Furthermore, teeth are provided on the edge of the detection disk, the detection disk is meshed with the printing disk, the detection disk is meshed with the driving gear, the detection disk, the printing disk and the driving gear are respectively located in the scanning room, the printing room and the control room, the detection disk is made of electromagnetic material, and the printing disk and the driving gear are made of insulating material.

[0018] Furthermore, the detection disk is provided with a plurality of through holes distributed in an array, the through holes correspond to the measuring bars one by one, the through holes and the lamp beads are distributed alternately, and the detection disk is connected to a power supply after being connected in series with an adjustable resistor.

[0019] Furthermore, the measuring bar includes a light-guiding layer and a supporting layer, the light-guiding layer wraps the supporting layer, the supporting layer is made of memory metal, the surface of the light-guiding layer is coated with a light-shielding coating, the surface of the light-guiding layer is dug with spiral grooves, and the spiral grooves are not covered with the light-shielding coating.

[0020] Furthermore, the photoelectric sensor is used to receive the light transmitted by the light-guiding layer, the magnetic block is adsorbed on the measuring strip, and the sizes of the photoelectric sensor and the magnetic block are larger than the aperture of the through hole.

[0021] Furthermore, the scanning components are symmetrically distributed front and back about the detection disk, and the heights of the two scanning components are staggered. The scanning components are located in the scanning room, the top end of the screw is connected to the motor, the two screws are connected by a synchronous wheel and a transmission belt, and the screw is screwed together with the mounting base.

[0022] Furthermore, one end of the mechanical arm is connected to a sliding rod, the sliding rod is located at the left corner of the printing chamber, and the sliding rod and the sleeve are fixed on the bottom plate of the casing.

[0023] Furthermore, the middle portion of the partition is arc-shaped, and a groove is provided on the arc-shaped portion of the partition. The partition divides the internal space of the housing to form a printing room, a scanning room and a control room, and the groove is located at the junction of the detection disk and the printing disk.

[0024] Compared with the prior art, the invention has the following beneficial effects: the convenient three-dimensional printing device utilizes a driving gear to drive the detection plate to rotate, so that the scanning component can scan the object around, utilizes a screw and a motor to drive the scanning component to move up and down, so that the scanning component can scan the object at different heights, utilizes a measuring bar on the detection plate to take the shape of the bottom surface of the object, and the scanning component scans the protruding shape of the measuring bar instead of scanning the bottom surface of the object, and does not need to manually adjust the placement position, so as to achieve an automatic scanning effect, greatly reduce the scanning time, and improve the scanning accuracy;

[0025] 1. A magnetic block is installed at the bottom of the measuring bar. The magnetic block and the electromagnetic material detection disk generate suction, so that the measuring bar is in an upward position in the initial state. When the placed object generates pressure on the measuring bar, the measuring bar at that position drops, thereby achieving the shape-taking effect;

[0026] 2. Use the adjustable resistor in the circuit to adjust the current connected to the detection disk, so as to adjust the magnetic force of the detection disk and make the device suitable for printing objects with fixed weight;

[0027] 3. Except for the spiral groove, all other parts of the measuring bar are coated with a light-shielding coating, so that the light emitted by the lamp beads can only enter the light-guiding layer through the spiral groove. Cooperating with the photoelectric sensor at the top, the depth of the measuring bar can be detected. These detection data are used to supplement the bottom shape of the actual object, thereby improving the accuracy of the three-dimensional model. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is an overall schematic diagram of the structure of the present invention;

[0029] Figure 2 It is a top cross-sectional schematic diagram of the structure of the present invention;

[0030] Figure 3 It is a front cross-sectional schematic diagram of the structure of the present invention;

[0031] Figure 4 It is an enlarged schematic diagram of the cross section of the measuring strip of the structure of the present invention;

[0032] Figure 5 A circuit diagram of a detection disk of the structure of the present invention;

[0033] Figure 6 It is a control schematic diagram of the structure of the present invention.

[0034] In the figure: 1. casing; 2. detection plate; 3. printing plate; 4. nozzle assembly; 5. measuring bar; 6. scanning assembly; 7. mechanical arm; 8. partition; 11. printing room; 12. scanning room; 13. control room; 14. material taking port; 15. sliding door; 16. material discharge port; 17. cover plate; 21. through hole; 22. lamp bead; 23. driving gear; 31. rotating shaft; 32. sleeve; 51. photoelectric sensor; 52. light guide layer; 53. supporting layer; 54. magnetic block; 55. spiral groove; 61. mounting seat; 62. screw; 63. motor; 64. synchronous wheel; 71. lifting cylinder; 72. sliding rod; 81. slot; 82. convex ring. DETAILED DESCRIPTION

[0035] 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.

[0036] Specific implementation method 1: Please refer to Figure 1-5 The present invention provides a technical solution: a convenient three-dimensional printing device, comprising:

[0037] The casing 1 has a cover plate 17 and a motor 63 mounted on the top surface thereof, a sliding door 15 is slidably mounted on the side plate of the casing 1, and a partition plate 8 is disposed inside the casing 1;

[0038] The detection plate 2 is placed between the convex rings 82, a through hole 21 is provided on the detection plate 2, and a lamp bead 22 is embedded on the bottom surface of the detection plate 2;

[0039] Printing disc 3, a rotating shaft 31 is welded at the center of the bottom surface of the printing disc 3, the lower end of the rotating shaft 31 is inserted into the sleeve 32, and teeth are arranged on the circumferential surface of the printing disc 3;

[0040] The nozzle assembly 4 is slidably mounted on the lifting cylinder 71, the lifting cylinder 71 is located above the printing plate 3, and the two ends of the lifting cylinder 71 are connected to the mechanical arm 7;

[0041] The measuring strip 5 passes through the through hole 21, the two ends of the measuring strip 5 are respectively welded with a photoelectric sensor 51 and a magnetic block 54, and a spiral groove 55 is provided on the outer surface of the measuring strip 5;

[0042] The scanning assembly 6 is screwed and fixed on the mounting seat 61, the mounting seat 61 is sleeved on the screw rod 62, and the bottom of the screw rod 62 is sleeved with a synchronous wheel 64;

[0043] The partition plate 8 has a convex ring 82 on its inner wall, and a groove 81 is formed on the partition plate 8 between the convex rings 82 .

[0044] When using the convenient three-dimensional printing device, the physical object to be printed is placed on the detection disk 2 from the discharge port 16, and the cover plate 17 is closed. The physical object generates pressure on the measuring strip 5, so that the measuring strip 5 overcomes the magnetic force and moves downward. The shape of the measuring strip 5 protruding downward is the same as the bottom shape of the physical object. The measuring strip 5 that does not contact the physical object remains motionless under the action of the magnetic force. The driving gear 23 rotates to drive the detection disk 2 to rotate, and the rotation of the detection disk 2 drives the printing disk 3 to rotate synchronously. The scanning component 6 moves vertically under the action of the screw 62 and the motor 63, thereby realizing a full-dimensional scanning of the physical object. No human operation is required throughout the process. After the measuring strip 5 drops, the lamp beads 22 is lit, and the light emitted by the lamp bead 22 enters the light guide layer 52 through the spiral groove 55. The light guide layer 52 transmits the light to the photoelectric sensor 51, and the photoelectric sensor 51 transmits the electrical signal to the controller. The controller calculates the descent depth of the measuring bar 5 by analyzing the electrical signal data, and fits the descent depth data of the measuring bar 5 with the scanning model data, so as to correct the model data and improve the accuracy of establishing the three-dimensional model. After the modeling is completed, the nozzle assembly 4 prints the finished product on the printing disk 3 according to the modeling. The printing disk 3 rotates synchronously with the detection disk 2, which is convenient for driving the orientation during the printing process. After printing is completed, the printed product is taken out from the material taking port 14.

[0045] The scanning assembly 6 includes: a scanning window, a scanning head, a motion controller, a motor, a code disk, a guide rail and a frame; the scanning window, the slide rail, the motor and the motion controller are fixed on the frame, the angle sensor is coaxially connected with the lead screw of the slide rail, the motor and the lead screw of the slide rail are connected by a synchronous belt, and the scanning head is fixed on the slider of the slide rail, so when the motor rotates, it will drive the lead screw to rotate, and the scanning head can move along the slide rail. In this way, three-dimensional scanning can be achieved; the computer sends a command to the motion controller, the controller starts the laser and the motor, the motor drives the lead screw to rotate through the synchronous belt, thereby realizing the movement of the scanning head, and the position of the scanning head during movement is measured by the angle sensor, the noise filter is an optional hardware module, which is used to synchronize the exposure of the camera and the working time of the laser, the computer notifies the control unit to start scanning through the USB data channel, the control unit sends a drive signal to drive the motor to move, and drives the moving parts to move on the guide rail, the moving parts are equipped with a CCD sensor, an image acquisition system and a structured light, so that the system can move along the sole direction. The structured light signal modulated by the curved surface of the sole is reflected to the CCD sensor. When the CCD sensor receives the acquisition command from the PC, it starts to acquire images and sends the acquisition synchronization signal to the scanning synchronization circuit. The CCD sensor converts the light signal into an electrical signal and transmits it to the image acquisition system. The image acquisition system converts the obtained image into a digital signal through AD conversion and sends it back to the PC through the USB data channel. In this way, the PC obtains an image containing information about the sole of the foot.

[0046] Specific implementation method 2: This implementation method is a further limitation of specific implementation method 1. Figure 1 ,and Figure 2 As shown, a discharge port 16 and a take-out port 14 are respectively provided on the top plate and the right side plate of the casing 1, and the discharge port 16 and the take-out port 14 correspond to the cover plate 17 and the sliding door 15 respectively. The discharge port 16 is located directly above the detection disk 2, and the take-out port 14 is close to the printing disk 3. The positions of the discharge port 16 and the take-out port 14 correspond to the detection disk 2 and the printing disk 3 respectively, which is convenient for placing physical objects and taking out printed products. The cover plate 17 and the sliding door 15 prevent foreign objects from entering the printing device, and at the same time form a closed structure, which helps to reduce working noise and improve usage comfort.

[0047] Specific implementation method three: This implementation method is a further limitation of specific implementation method one. Teeth are arranged on the edge of the detection disk 2. The detection disk 2 is meshed with the printing disk 3. The detection disk 2 is meshed with the driving gear 23. The detection disk 2, the printing disk 3 and the driving gear 23 are respectively located in the scanning room 12, the printing room 11 and the control room 13. The detection disk 2 is made of electromagnetic material, and the printing disk 3 and the driving gear 23 are made of insulating material. The detection disk 2 generates magnetic force when powered on, so that the measuring bar 5 is in an ascending position. When the detection disk 2 is powered off, the measuring bar 5 all drops under the action of gravity, and the measuring bar 5 is conveniently reset to zero by turning on and off the power.

[0048] Specific implementation method 4: This implementation method is a further limitation of specific implementation method 1. Figure 2 , Figure 3 and Figure 4 As shown, the detection disk 2 is provided with a plurality of through holes 21 distributed in an array, the through holes 21 correspond to the measuring bars 5 one by one, the through holes 21 and the lamp beads 22 are distributed alternately, the detection disk 2 is connected in series with an adjustable resistor and then connected to a power supply, and the controller adjusts the current value passed into the detection disk 2 by changing the resistance value of the resistor. The greater the current, the stronger the magnetic force, thereby adapting to objects with large weight differences.

[0049] Specific implementation method 5: This implementation method is a further limitation of specific implementation method 1. Figure 4 As shown, the measuring bar 5 includes a light-guiding layer 52 and a supporting layer 53. The light-guiding layer 52 wraps the supporting layer 53. The supporting layer 53 is made of memory metal. The surface of the light-guiding layer 52 is coated with a light-shielding coating. A spiral groove 55 is dug on the surface of the light-guiding layer 52. The spiral groove 55 is not covered with the light-shielding coating. The light-shielding coating can not only block external light from entering the light-guiding layer 52, but also reduce the loss of light entering the light-guiding layer 52. The supporting layer 53 enhances the resistance of the measuring bar 5 and prolongs the service life of the measuring bar 5.

[0050] Specific embodiment six: This embodiment is a further limitation of specific embodiment one, the photoelectric sensor 51 is used to receive the transmitted light of the light guiding layer 52, the magnetic block 54 is adsorbed with the measuring strip 5, the size of the photoelectric sensor 51 and the magnetic block 54 is larger than the aperture of the through hole 21, and the larger size is used to prevent the measuring strip 5 from escaping from the detection disk 2.

[0051] Specific implementation method 7: This implementation method is a further limitation of specific implementation method 1. Figure 2 and Figure 3 As shown, the scanning components 6 are symmetrically distributed front and back about the detection disk 2, and the heights of the two scanning components 6 are staggered. The scanning components 6 are located in the scanning chamber 12. The top of the screw 62 is connected to the motor 63. The two screws 62 are connected to the transmission belt through the synchronous wheel 64. The screw 62 is screwed together with the mounting base 61. The scanning data of the two scanning components 6 staggered in height complement each other.

[0052] Specific embodiment eight: This embodiment is a further limitation of specific embodiment one. One end of the robot arm 7 is connected to the slide bar 72, and the slide bar 72 is located at the left corner of the printing chamber 11. The slide bar 72 and the sleeve 32 are fixed on the bottom plate of the casing 1. The robot arm 7, the lifting cylinder 71 and the slide bar 72 are used to adjust the position of the nozzle assembly 4 to facilitate printing the finished product on the printing plate 3.

[0053] Specific embodiment nine: This embodiment is a further limitation of specific embodiment one. The middle portion of the partition 8 is arc-shaped, and a groove 81 is provided on the arc-shaped portion of the partition 8. The partition 8 divides the internal space of the casing 1 to form a printing room 11, a scanning room 12 and a control room 13. The groove 81 is located at the junction of the detection disk 2 and the printing disk 3. The partition 8 is used to divide the layout according to the function, reduce the mutual interference between different functional areas, and facilitate the regular distribution of internal device circuits.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A convenient three-dimensional printing device, characterized in that: include: A casing (1), wherein a cover plate (17) and a motor (63) are mounted on the top surface of the casing (1), a sliding door (15) is slidably mounted on the side plate of the casing (1), and a partition plate (8) is arranged inside the casing (1); a convex ring (82) is arranged on the inner wall of the partition plate (8), and a groove (81) is opened on the partition plate (8) between the convex rings (82); A detection disk (2), the detection disk (2) is made of electromagnetic material, the detection disk (2) is placed between the convex rings (82), a plurality of through holes (21) distributed in an array are opened on the detection disk (2), lamp beads (22) are embedded on the bottom surface of the detection disk (2), the through holes (21) and the lamp beads (22) are alternately distributed, and the detection disk (2) is connected in series with an adjustable resistor and then connected to a power supply; A printing disc (3), wherein a rotating shaft (31) is welded at the center of the bottom surface of the printing disc (3), a sleeve (32) is inserted into the lower end of the rotating shaft (31), and teeth are arranged on the circumferential surface of the printing disc (3); A nozzle assembly (4) is slidably mounted on a lifting cylinder (71), wherein the lifting cylinder (71) is located above the printing plate (3), and both ends of the lifting cylinder (71) are connected to a mechanical arm (7); A measuring bar (5), the measuring bar (5) passing through the through hole (21), the through hole (21) corresponding to the measuring bar (5) one by one, the two ends of the measuring bar (5) being respectively welded with a photoelectric sensor (51) and a magnetic block (54), the measuring bar (5) comprising a light-guiding layer (52) and a supporting layer (53), the light-guiding layer (52) wrapping the supporting layer (53), the supporting layer (53) being made of a memory metal material, the surface of the light-guiding layer (52) being coated with a light-shielding coating, the surface of the light-guiding layer (52) being dug with a spiral groove (55), the spiral groove (55) not being covered with the light-shielding coating; The scanning assembly (6) is screwed and fixed on a mounting seat (61), wherein the mounting seat (61) is sleeved on a screw rod (62), and a synchronous wheel (64) is sleeved on the bottom of the screw rod (62).

2. The convenient three-dimensional printing device according to claim 1, characterized in that: A discharge port (16) and a material taking port (14) are respectively provided on the top plate and the right side plate of the casing (1), the discharge port (16) and the material taking port (14) respectively corresponding to the cover plate (17) and the sliding door (15), the discharge port (16) being located directly above the detection disk (2), and the material taking port (14) being close to the printing disk (3).

3. The convenient three-dimensional printing device according to claim 1, characterized in that: Teeth are arranged on the edge of the detection disk (2); the detection disk (2) meshes with the printing disk (3); the detection disk (2) meshes with the driving gear (23); the detection disk (2), the printing disk (3) and the driving gear (23) are respectively located in the scanning room (12), the printing room (11) and the control room (13); the printing disk (3) and the driving gear (23) are made of insulating material.

4. The convenient three-dimensional printing device according to claim 1, characterized in that: The photoelectric sensor (51) is used to receive the light transmitted by the light-guiding layer (52); the magnetic block (54) is attracted to the measuring strip (5); and the sizes of the photoelectric sensor (51) and the magnetic block (54) are larger than the aperture of the through hole (21).

5. The convenient three-dimensional printing device according to claim 1, characterized in that: The scanning components (6) are symmetrically distributed front and rearward with respect to the detection disk (2), and the heights of the two scanning components (6) are staggered. The scanning components (6) are located in a scanning chamber (12). The top end of the screw rod (62) is connected to a motor (63). The two screw rods (62) are connected to a transmission belt via a synchronous wheel (64). The screw rod (62) is screwed together with a mounting seat (61).

6. The convenient-to-use three-dimensional printing device according to claim 1, characterized in that: One end of the mechanical arm (7) is connected to a slide bar (72), and the slide bar (72) is located at a left corner of the printing chamber (11). The slide bar (72) and the sleeve (32) are fixed on the bottom plate of the casing (1).

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