3D Bio-Printing System

Abstract

The present invention relates to the field of 3D printing technology, and particularly to a 3D bioprinting system, which includes a driving frame, on which a printing component is slidably installed; the printing component includes a printing driving seat and a lifting driving seat, the lifting driving seat is provided with a print head, the print head includes a feeding pipe and a clamping seat, a heat conducting sleeve is arranged at the bottom of the clamping seat, the heat conducting sleeve is connected with a heat conducting plate, and a first heat dissipation fan is installed on the heat conducting plate; fixing seats are respectively installed at both ends of the two clamping seats, heat dissipation grooves are formed in the fixing seats, and second heat dissipation fans are installed in the heat dissipation grooves; the print head can move in six directions, and when sliding, the linear bearing can provide a stable linear path. A large amount of heat is generated during printing. The clamping seat and the heat conducting sleeve can conduct the heat generated by the feeding pipe, and the first heat dissipation fan and the second heat dissipation fan simultaneously discharge the heat outwards, so as to ensure the stability of the bondable material, and the modeling shape printed by the bondable material has a better effect and higher precision.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and particularly to a 3D bioprinting system. Background Art

[0002] 3D printing (3DP) is a kind of rapid prototyping technology, also known as additive manufacturing. It is a technology that constructs objects by layer-by-layer printing based on digital model files, using powdered metals, plastics, and other bondable materials. 3D printing is usually achieved by using digital technology material printers. It is often used in the fields of mold manufacturing, industrial design, etc. to manufacture models, and then gradually used for the direct manufacturing of some products. There are already parts printed using this technology. This technology has applications in jewelry, footwear, industrial design, architecture, engineering and construction (AEC), automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms, and other fields.

[0003] Chinese Utility Model Patent No. CN201521141092.1 discloses a multi-material 3D printer. The 3D printer includes a housing, and a base, a workbench, a nozzle, a three-dimensional motion mechanism, a feeding unit, and a material storage unit are arranged inside the housing. The 3D printer is connected to a controller. A power supply is arranged under the base, and the controller is connected to the power supply. The three-dimensional motion mechanism is driven by a servo motor, and the servo motor is electrically connected to the controller. The three-dimensional motion mechanism includes an X-axis motion mechanism, a Y-axis motion mechanism, and a Z-axis motion mechanism; a feeding driving device is arranged on the nozzle, and the feeding driving device is electrically connected to the controller; the feeding unit includes several guide pipes, one end of each guide pipe is connected to the nozzle, and the other end is connected to the material storage unit. A valve controller is arranged on the guide pipe, and the valve controller is electrically connected to the controller; the workbench is located on the base.

[0004] When the 3D printing system is working, a large amount of heat will be generated. If this heat is not discharged in time, it is easy to affect the modeling shape of the bondable material, resulting in deviation errors in the formed shape and poor effects. Summary of the Invention

[0005] The purpose of the present invention is to provide a 3D bioprinting system in view of the deficiencies of the prior art.

[0006] To achieve the above purpose, the technical solution of the present invention is as follows:

[0007] 3D bio-printing system, including a support chassis, on which a support base plate is adjustably mounted. A printing area is provided at the top of the support base plate. A driving frame is mounted on the top of the support chassis. A first guiding rod is arranged along the length direction of the driving frame. A first sliding seat is slidably mounted on the first guiding rod. A second guiding rod is mounted between two first sliding seats. A printing assembly is slidably mounted on the second guiding rod; the printing assembly includes a printing driving seat and a lifting driving seat which is liftably mounted on the printing driving seat. The printing driving seat is formed with a plurality of driving guiding holes and driving transmission holes along the length direction. Linear bearings which are coaxially matched with the second guiding rod are mounted in the driving guiding holes; the lifting driving seat is mounted with a print head. The print head includes a feeding pipe and a pair of clamp seats which are formed by aluminum material and surround and mount the feeding pipe. A heat conducting sleeve which surrounds the feeding pipe is provided at the bottom of the clamp seat. The heat conducting sleeve is connected with a heat conducting plate. A first heat dissipation fan is mounted on the heat conducting plate; fixing seats are respectively mounted at both ends of the two clamp seats. The fixing seats respectively extend outwards. Heat dissipation grooves are formed in the fixing seats. Second heat dissipation fans are mounted in the heat dissipation grooves.

[0008] Further: The driving frame includes a pair of long aluminum profiles which are arranged at intervals. Short aluminum profiles are respectively spliced at both ends between the two long aluminum profiles. The first guiding rod is arranged along the length direction of the long aluminum profile. The long aluminum profile is mounted with a rotatable first ball screw member. The first sliding seat is mounted with a first screw sleeve seat for the first ball screw to pass through and be in transmission cooperation with the first ball screw and is formed with a first guiding hole for the first guiding rod to slide through.

[0009] Further: A rotatable second ball screw member is mounted between the two first sliding seats. The driving transmission hole of the printing driving seat is mounted with a second screw sleeve seat for the second ball screw to pass through and be in transmission cooperation with the second ball screw. The driving guiding hole is coaxially matched with the second guiding rod and allows the second guiding rod to slide through.

[0010] Further: The first sliding seat includes a middle seat. A top seat is formed at the top of the middle seat and a bottom seat is formed at the bottom. The first guiding holes respectively penetrate and are formed in the top seat and the bottom seat. The middle seat is further formed with a transmission seat. A first transmission hole for mounting the first screw sleeve seat is formed in the transmission seat. The cross section of the first screw sleeve seat is T-shaped. An arc hole which is coaxially matched with the first screw sleeve seat is formed in the middle seat.

[0011] Further: A plurality of longitudinally arranged longitudinal guiding holes and longitudinal driving holes are formed through the lifting driving seat in a penetrating manner. The printing driving seat is formed with a concave lifting cavity. A longitudinal guiding rod which is coaxially matched with the longitudinal guiding holes and a longitudinal ball screw which is matched with the longitudinal driving holes are longitudinally mounted in the lifting cavity.

[0012] Further: The lifting drive seat is formed with a printing drive hole, in which a printing drive shaft for mounting a print head is rotatably arranged. A brushless rotor motor is nested on the lifting drive seat, and the drive end of the brushless rotor motor extends towards the top. Synchronous pulleys are installed on both the printing drive seat and the drive end of the brushless rotor motor. A synchronous belt is nested between the printing drive shaft and the drive end of the brushless rotor motor through the synchronous pulleys.

[0013] Further: The fixed seat includes side guide plates connected to the ends of the two clamping seats and a heat dissipation mounting plate hinged to the side guide plates. The side guide plates are formed with sliding grooves along the length direction, and sliding guide rails that are slidably engaged with the sliding grooves are formed on the outer side walls of the clamping seats. Adjusting holes are respectively formed through the two clamping seats, and adjusting rods are inserted into the adjusting holes. Semi-circular holes are formed on the contact surfaces of the clamping seats and the feeding pipe.

[0014] Further: One end of the heat dissipation mounting plate is formed with a hinge hole, and a hinge shaft that is rotatably inserted into the hinge hole is installed on the side guide plate. A damping sleeve is embedded in the hinge hole.

[0015] Further: The second heat dissipation fan is a turbine heat dissipation fan.

[0016] Further: Bottom grooves are formed in the width direction of the support chassis, and a plurality of knob handles are rotatably mounted on the support bottom plate. Knob rods that pass through the support bottom plate and are in a tight and loose fit with the bottom grooves of the support chassis are formed on the knob handles.

[0017] Advantages of the present invention: The first sliding seat can slide along the first guide rod, and the printing assembly can slide along the second guide rod, enabling the printing drive seat to move forward, backward, left, and right. The lifting drive seat mounted on the printing drive seat can drive the print head to move up and down in a liftable manner, allowing the print head to move in six directions. When sliding, the linear bearings can provide a stable linear path, further improving stability.

[0018] A large amount of heat is generated during printing. The clamping seats and the heat conduction sleeves can conduct the heat generated by the feeding pipe, and the heat is simultaneously discharged outward through the first heat dissipation fan and the second heat dissipation fan, enabling the heat on the feeding pipe to be dissipated by multiple heat dissipation fans, ensuring the stability of the bondable material. The modeling shape printed by the bondable material has a better effect and higher accuracy. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of a 3D bioprinting system, with the printing assembly hidden.

[0020] Figure 2 It is a schematic structural diagram of the first sliding seat.

[0021] Figure 3 It is a schematic structural diagram of the printing assembly.

[0022] Figure 4 This is a schematic diagram of the structure connecting the printing drive seat and the lifting drive seat.

[0023] Figure 5 A schematic diagram of the print head structure.

[0024] Reference numerals include:

[0025] 1-Support chassis,

[0026] 11-support base plate, 12-printing area, 13-bottom groove, 14-knob handle, 15-drive frame, 16-long aluminum profile, 17-short aluminum profile,

[0027] 2- driving mechanism,

[0028] 21-first guide rod, 22-first ball screw, 23-first screw sleeve seat,

[0029] 24-second guide rod, 25-second ball screw, 26-second screw seat,

[0030] 3-First sliding seat,

[0031] 31-middle seat, 32-top seat, 33-bottom seat, 34-transmission seat, 35-first transmission hole,

[0032] 36-first guide hole, 37-arc hole,

[0033] 4-Printing components,

[0034] 40-longitudinal guide rod, 41-print drive seat, 42-drive guide hole, 43-drive transmission hole,

[0035] 44-lifting drive seat, 45-longitudinal guide hole, 46-longitudinal drive hole, 47-lifting cavity,

[0036] 48-longitudinal ball screw, 49-linear bearing,

[0037] 5-Print driver hole,

[0038] 51-print drive shaft, 52-brushless rotor motor, 53-synchronous wheel, 54-synchronous belt,

[0039] 6-Print head,

[0040] 61-feeding pipe, 62-clamp seat, 63-adjusting hole, 64-adjusting rod, 65-semicircular hole,

[0041] 66-heat conducting sleeve, 67-heat conducting plate, 68-first cooling fan,

[0042] 7-Fixed seat,

[0043] 71-side guide plate, 72-sliding groove, 73-heat dissipation mounting plate, 74-hinge hole,

[0044] 75 - hinge shaft, 76 - damping sleeve, 77 - heat sink, 78 - second cooling fan. DETAILED DESCRIPTION

[0045] The present invention is described in detail below with reference to the accompanying drawings.

[0046] like Figures 1-5 As shown, the 3D bioprinting system includes a support base 1, on which a support base plate 11 is adjustably mounted, a printing area 12 is provided on the top of the support base plate 11, a printing plate is mounted on the printing area 12, a bottom groove 13 is formed in the width direction of the support base 1, a plurality of knob handles 14 are mounted on the knob of the support base plate 11, and the knob handle 14 is formed with a knob rod that passes through the support base plate 11 and fits tightly with the bottom groove 13 of the support base plate 1. By rotating the knob handle 14, the knob rod is driven to rotate, so that the support base plate 11 can be loosely or tightly connected with the bottom groove 13 on the support base frame 1, and the installation position of the support base plate 11 can be adjusted accordingly, which can provide more positions for facilitating the construction of the model.

[0047] A driving frame 15 is installed on the top of the supporting base frame 1, and the driving frame 15 includes a pair of long aluminum profiles 16 arranged at intervals. Short aluminum profiles 17 are spliced at both ends between the two long aluminum profiles 16. The short aluminum profiles 17 are perpendicular to the long aluminum profiles 16. A driving mechanism 2 is arranged on the driving frame 15. The driving mechanism 2 includes a first guide rod 21 arranged along the length direction of the long aluminum profile 16. The first guide rod 21 is slidably installed with a first sliding seat 3. A second guide rod 24 is installed between the two first sliding seats 3. The long aluminum profile 16 is installed with a rotatable first ball screw 22. The first ball screw 22 is installed at both ends of the long aluminum profile 16 through a bearing seat and is rotated by the motor.

[0048] The first sliding seat 3 is equipped with a first screw sleeve seat 23 for the first ball screw 22 to pass through and to cooperate with the first ball screw 22, and a first guide hole 36 is formed for the first guide rod 21 to slide through. A linear bearing 49 is inserted into the first guide hole 36. Under the transmission of the first ball screw 22, the first screw sleeve seat 23 of the first sliding seat 3 is cooperated with the first ball screw 22 so that the first sliding seat 3 can slide and cooperate with the first guide rod 21 through the first guide hole 36, and reciprocate in the length direction of the long aluminum profile 16.

[0049] Further: The first sliding seat 3 includes a middle seat 31. A top seat 32 is formed at the top of the middle seat 31 and a bottom seat 33 is formed at the bottom. The first guide holes 36 are respectively formed through the top seat 32 and the bottom seat 33. The middle seat 31 is further formed with a transmission seat 34. The transmission seat 34 is formed with a first transmission hole 35 for installing the first screw sleeve seat 23. The cross-section of the first screw sleeve seat 23 is T-shaped. The first screw sleeve seat 23 is fixed in the first transmission hole 35 of the transmission seat 34 by screws. The middle seat 31 is formed with an arc-shaped hole 37 coaxially fitted with the first screw sleeve seat 23. This arc-shaped hole 37 allows the transmission seat 34 to reserve space for the extended part of the first screw sleeve seat 23 to be embedded, making the overall structure of the first sliding seat 3 relatively compact and occupying less space.

[0050] A printing assembly 4 is slidably mounted on the second guide rod 24. The printing assembly 4 includes a printing drive seat 41 and a lifting drive seat 44 which is liftably mounted on the printing drive seat 41. The printing drive seat 41 is formed with a plurality of drive guide holes 42 and drive transmission holes 43 along the length direction. A linear bearing 49 coaxially fitted with the second guide rod 24 is installed in the drive guide hole 42. A rotatable second ball screw 25 is installed between the two first sliding seats 3 through a bearing seat. A second screw sleeve seat 26 through which the second ball screw 25 is driven and which is in driving cooperation with the second ball screw 25 is installed in the drive transmission hole 43 of the printing drive seat 41. The drive guide hole 42 is coaxially fitted with the second guide rod 24 and allows the second guide rod 24 to slide through. Similarly, under the drive of the second ball screw 25, the printing drive seat 41 slides along the length direction of the second guide rod 24.

[0051] The lifting drive seat 44 is formed with a plurality of longitudinally arranged longitudinal guide holes 45 and longitudinal drive holes 46 through it. A linear bearing 49 is inserted into the longitudinal guide hole 45. The printing drive seat 41 is formed with a concave lifting cavity 47. A longitudinal guide rod 40 coaxially fitted with the longitudinal guide hole 45 and a longitudinal ball screw 48 cooperating with the longitudinal drive hole 46 are longitudinally installed in the lifting cavity 47. The longitudinal ball screw 48 is controlled to move by a servo motor. Both ends of the longitudinal ball screw 48 are installed in the lifting cavity 47 through bearing seats. The printing drive seat 41 is formed with a longitudinal drive hole 46 for installing the bearing seats at both ends of the longitudinal ball screw 48, so that the lifting drive seat 44 can move up and down along the longitudinal guide rod 40 in the lifting cavity 47.

[0052] The lifting drive seat 44 is installed with a print head 6. The lifting drive seat 44 is formed with a print drive hole 5. A print drive shaft 51 for installing the print head 6 is rotatably arranged in the print drive hole 5. A brushless rotor motor 52 is nested on the lifting drive seat 44. The drive end of the brushless rotor motor 52 extends towards the top. Synchronous pulleys 53 are installed on both the print drive seat 41 and the drive end of the brushless rotor motor 52. A synchronous belt 54 is nested between the print drive shaft 51 and the drive end of the brushless rotor motor 52 through the synchronous pulleys 53. Through the transmission connection of the synchronous pulleys 53 and the synchronous belt 54, the print head 6 installed on the print drive shaft 51 can rotate to extrude the adhesive material for 3D printing modeling, and biological products such as robot structures and cell boxes can be printed.

[0053] The print head 6 includes a feed pipe 61 and a pair of clamp seats 62 formed by machining aluminum material and surrounding and installing the feed pipe 61. A heat conducting sleeve 66 surrounding the feed pipe 61 is arranged at the bottom of the clamp seat 62. The heat conducting sleeve 66 is connected with a heat conducting plate 67, and a first cooling fan 68 is installed on the heat conducting plate 67; Fixing seats 7 are respectively installed at both ends of the two clamp seats 62. The fixing seats 7 extend outwards respectively. The fixing seats 7 are formed with heat dissipation grooves 77, and a second cooling fan 78 is installed in the heat dissipation grooves 77. The second cooling fan 78 is a turbo cooling fan. The heat conducting sleeve 66 and the heat conducting plate 67 are both formed by machining aluminum material and have good heat conducting effects.

[0054] A large amount of heat is generated during printing. The clamp seat 62 and the heat conducting sleeve 66 can conduct the heat generated by the feed pipe 61, and the first cooling fan 68 and the second cooling fan 78 simultaneously discharge the heat outwards, so that the heat on the feed pipe 61 can be dissipated through multiple cooling fans, ensuring the stability of the adhesive material, and the modeling shape printed by the adhesive material has better effect and higher precision.

[0055] Further, the fixing seat 7 includes a side guide plate 71 connected to the ends of the two clamp seats 62 and a heat dissipation mounting plate 73 hinged to the side guide plate 71. The side guide plate 71 is formed with a sliding groove 72 along the length direction. A sliding guide rail slidably matched with the sliding groove 72 is formed on the outer side wall of the clamp seat 62. Threaded adjustment holes 63 are respectively formed through the two clamp seats 62. An adjustment rod 64 is inserted into the adjustment holes 63. A semi-circular hole 65 is formed on the contact surface between the clamp seat 62 and the feed pipe 61. By screwing the adjustment rod 64 and the adjustment holes 63 of the two clamp seats 62 in cooperation, the tightness of the two clamp seats 62 on the feed pipe 61 changes. When loosened, through the rotational cooperation of the semi-circular hole 65 of the clamp seat 62 and the feed pipe 61, the installation angle of the clamp seat 62 can change. After the angle adjustment of the clamp seat 62 is completed, continue to screw the adjustment rod 64 to clamp the clamp seat 62.

[0056] When loosened, the two clamping seats 62 move away from each other. At this time, the molded sliding guide rails on the side ends of the clamping seats 62 will slide and cooperate with the sliding grooves 72 of the side guide plates 71, so that the two clamping seats 62 are limited by the side guide plates 71 when they are dispersed. The adjustment holes 63 of the two clamping seats 62 can always remain coaxial, which is convenient for adjusting the tightness of the clamping seats 62.

[0057] A hinge hole 74 is formed at one end of the heat dissipation mounting plate 73. A hinge shaft 75 is mounted on the side guide plate 71, which is rotatably inserted into the hinge hole 74. A damping sleeve 76 is embedded in the hinge hole 74. Changing the installation angle of the clamping base 62 causes the angle of the side guide plate 71 to change accordingly. The heat dissipation mounting plate 73, on which the second heat dissipation fan 78 is mounted, engages with the knob of the hinge shaft 75 through the hinge hole 74, allowing the heat dissipation mounting plate 73 to rotate about the hinge shaft 75. The damping sleeve 76 ensures that the rotation angle is stable. Therefore, the angular position of the air outlet of the second heat dissipation fan 78 can be changed, allowing the heat dissipation direction of the second heat dissipation fan 78 to be adjusted according to production requirements.

[0058] In summary, it can be seen that the present invention has the above-mentioned excellent characteristics, which can enhance its performance unprecedented in the past and become a product with great practical value.

[0059] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A 3D bioprinting system, comprising a support chassis, on which a support bottom plate is adjustably mounted, and a printing area is arranged at the top of the support bottom plate, characterized in that: A driving frame is installed on the top of the supporting chassis, and a first guide rod is arranged along the length direction of the driving frame, a first sliding seat is slidably installed on the first guide rod, a second guide rod is installed between the two first sliding seats, and a printing assembly is slidably installed on the second guide rod; The printing assembly includes a printing drive seat and a lifting drive seat that is escalably mounted on the printing drive seat. The printing drive seat is formed with a plurality of driving guide holes and driving transmission holes along the length direction. A linear bearing that is coaxial with the second guide rod is installed in the driving guide hole. The lifting drive seat is equipped with a print head, which includes a feed pipe and a pair of clamping seats made of aluminum material that surround and install the feed pipe. A heat-conducting sleeve that surrounds the feed pipe is provided at the bottom of the clamping seat. The heat-conducting sleeve is connected to a heat-conducting plate, and a first cooling fan is installed on the heat-conducting plate. Fixed seats are respectively installed at both ends of the two clamping seats. The fixed seats extend outward and are formed with heat dissipation grooves. A second cooling fan is installed in the heat dissipation grooves. The lifting drive seat is formed with a plurality of longitudinal guide holes and longitudinal drive holes arranged longitudinally, and the printing drive seat is formed with a concave lifting cavity, in which a longitudinal guide rod coaxially matched with the longitudinal guide hole and a longitudinal ball screw matched with the longitudinal drive hole are longitudinally installed; The lifting drive seat is formed with a print drive hole, and a print drive shaft for mounting a print head is rotatably arranged in the print drive hole. A brushless rotor motor is nested on the lifting drive seat, and the driving end of the brushless rotor motor extends toward the top. The print drive seat and the driving end of the brushless rotor motor are both installed with a synchronous wheel, and a synchronous belt is nested between the print drive shaft and the driving end of the brushless rotor motor via the synchronous wheel. The fixing seat includes a side guide plate connected to the two ends of the clamping seat and a heat dissipation mounting plate hinged to the side guide plate. The side guide plate is formed with a sliding groove along the length direction, and the outer wall of the clamping seat is formed with a sliding guide rail that slides with the sliding groove. The two clamping seats are respectively penetrated by adjustment holes, and an adjustment rod is inserted into the adjustment hole. The contact surface between the clamping seat and the feeding pipe is formed with a semicircular hole.

2. The 3D bioprinting system according to claim 1, characterized in that: The drive frame includes a pair of long aluminum profiles arranged at intervals, and short aluminum profiles are spliced at both ends between the two long aluminum profiles. The first guide rod is arranged along the length direction of the long aluminum profile. The long aluminum profile is equipped with a rotatable first ball screw. The first sliding seat is equipped with a first screw sleeve seat for the first ball screw to pass through and cooperate with the first ball screw transmission, and a first guide hole is formed for the first guide rod to slide through.

3. The 3D bioprinting system according to claim 2, characterized in that: A rotatable second ball screw is installed between the two first sliding seats, and the drive transmission hole of the printing drive seat is equipped with a second screw sleeve seat for the second ball screw to pass through and cooperate with the second ball screw transmission. The drive guide hole is coaxially matched with the second guide rod and allows the second guide rod to slide through.

4. The 3D bioprinting system according to claim 3, wherein: The first sliding seat includes a middle seat, a top seat is formed on the top of the middle seat and a bottom seat is formed on the bottom, first guide holes are formed through the top seat and the bottom seat respectively, the middle seat is also formed with a transmission seat, the transmission seat is formed with a first transmission hole for installing the first screw sleeve seat, the cross-section of the first screw sleeve seat is T-shaped, and the middle seat is formed with an arc hole coaxially matched with the first screw sleeve seat.

5. The 3D bioprinting system according to claim 1, wherein: One end of the heat dissipation mounting plate is formed with a hinge hole, and the side guide plate is provided with a hinge shaft that is rotatably inserted into the hinge hole, and a damping sleeve is embedded in the hinge hole.

6. The 3D bioprinting system according to claim 5, wherein: The second heat dissipation fan is a turbo heat dissipation fan.

7. The 3D bioprinting system according to claim 1, characterized in that: A bottom groove is formed in the width direction of the support chassis, and a plurality of knob handles are mounted on the support bottom plate by knobs. The knob handles are formed with knob rods that pass through the support bottom plate and are tightly and loosely fitted with the bottom groove of the support chassis.

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