CN210362502U - 3D printing equipment - Google Patents

Abstract

The utility model discloses a 3D printing device, which comprises a machine body frame, wherein one side of the top surface of the machine body frame is vertically provided with a Z-axis motor sliding table, a forming platform is arranged on the Z-axis motor sliding table, the middle part of the top surface of the machine body frame is provided with a stripping mechanism, the stripping mechanism is provided with a material containing device, and the material containing device is just opposite to the bottom of the forming platform; DLP ray apparatus, light path adjusting device, main control board and control circuit all install inside the fuselage frame, and the feed supplement module installs additional in flourishing material device one side and aims at the silo, and distributed temperature control module installs respectively in flourishing material device, feed supplement module, three departments of shaping platform. The device has stable structure and convenient operation, and can print resin or biological material structures with micron-sized fineness and complex shapes; the machine body is small, and is suitable for narrow space operation such as an ultra-clean bench; the device can be additionally provided with a distributed temperature control module and a material supplementing module, so that the condensation of the biological material is prevented, the concentration change caused by the water evaporation of the biological gel material is reduced, and the biological ink material is saved.

Description

3D printing equipment

Technical Field

The utility model belongs to the technical field of the automation equipment technique and specifically relates to a 3D printing apparatus is related to.

Background

The 3D printing technique is a technique for constructing an object by printing layer by layer on the basis of a digital model file. The three-dimensional printer is used for printing the model, the traditional cutting machine tool and a tool die are not needed, and the three-dimensional entity can be directly formed according to the three-dimensional model of the workpiece under the control of a computer. The technology has applications in jewelry, machinery, industrial design, construction, aerospace, dental and medical industries, and other fields.

With the rapid development of the 3D printing industry, the requirements of people on 3D printers are higher and higher. Although the existing 3D printing equipment can meet the common use requirements, most of the existing 3D printing equipment stays at the processing stage aiming at common materials, cannot adapt to 3D forming printing of special materials such as hydrogel and other 'biological ink' materials, and is lack of modularization and functional design.

The 3D printing equipment capable of simultaneously printing the traditional material and the biological material is lacking in the market, and the technical difficulty is to simultaneously adapt to the property and performance difference of the traditional material and the biological material. Similar to the conventional 3D printing, biological 3D printing is also based on the 3D additive manufacturing principle, but is a technology of printing out a designed three-dimensional structure by using "biological ink", and is a novel regenerative medical engineering technology which is subject and field-wide and takes processing of active materials including biological materials, growth factors, cells and the like as main contents and reconstruction of human tissues and organs as a target. As a new tissue engineering means, the method plays more and more important roles in three-dimensional in-vitro cell culture, organ chip manufacturing, drug screening, tissue regeneration and the like, and can quickly and conveniently construct the in-vitro cell growth environment or manufacture an in-vivo stent. Unlike conventional 3D printing, bio-printing requires providing conditions, such as temperature and humidity, suitable for living and growth of bioactive materials, such as cells, and having good biological functions, and also requires considering characteristics of the bio-materials, which are completely different from those of conventional printing materials. At present, an extrusion printing mode is generally adopted by a biological printer, and biological ink materials are condensed due to too low temperature, so that an extrusion head is easily blocked, and printing is interrupted. To further improve the precision, the extrusion head must be made small, which is a set of contradictions. Therefore, the 3D printing mode of the extrusion type is difficult to realize a more fine pore structure and a more complex appearance structure, the printing material is easy to block in a nozzle and a pipeline flow channel of which the temperature cannot be effectively controlled, and the phenomenon is more and more obvious along with the increase of the viscosity of the printing material, so that the printing efficiency of the whole bioprinter is influenced. And by adopting the DLP photocuring 3D printing technology, an extrusion head is not needed, micron-sized high-precision printing and various complex shapes can be realized. However, the conventional photocuring 3D printing needs to require that the printing material has good fluidity, so that the printing material is not suitable for printing of easily-condensed biological materials, and meanwhile, materials such as hydrogel have the characteristics that water is easily evaporated and is easily shrunk and deformed, and the materials are expensive. In summary, in order to adapt to biological 3D printing, the capability of temperature control, humidity control and saving printing materials is required.

SUMMERY OF THE UTILITY MODEL

For overcoming current 3D printing apparatus's various defects, the utility model aims to provide a brand-new high accuracy 3D printing apparatus who possesses complicated molding ability, possess modularization and functional design, the printer main part can satisfy the demand of printing traditional materials such as photosensitive resin in the function, leave the function extension interface simultaneously, can install feed supplement module and the temperature control module to "biological ink" printing additional as required, when having realized printing traditional material promptly, also can print photosensitive "biological ink" material, only need add above-mentioned two modules can. Through the equipment, traditional resin or special biological ink 3D printing structure with fineness up to micron level and complex shape can be manufactured. When printing to biomaterial such as aquogel, this device stable in structure and miniaturized fuselage can be applicable to the narrow and small space of aseptic superclean bench completely, and after equipment installs the distributing type temperature control module additional, can heat the biomaterial of flourishing material device, feed supplement module, three places of shaping platform and keep warm in order to prevent the material condensation at whole printing in-process, ensures going on smoothly of printing. Equipment possesses the feed supplement module, can regularly add according to certain rule, compares in once only to the open space filling of silo whole printing material, has reduced the area that volatile component exposes in the air in the printing material, has reduced the moisture evaporation of material by the design of sealed container outwards adding material, has also overcome the concentration change of long-time printing biomaterial, has saved expensive biological ink material simultaneously: the printing material left in the container after the printing is finished can be recycled or directly used for next printing, and the sterility can be ensured for a long time.

In order to achieve the above object, the present invention provides the following technical solutions:

A3D printing device comprises a machine body frame, wherein a Z-axis motor sliding table is vertically arranged on one side of the top surface of the machine body frame, a forming platform is arranged on the Z-axis motor sliding table, a stripping mechanism is arranged in the middle of the top surface of the machine body frame, a material containing device is arranged on the stripping mechanism, and the material containing device is over against the bottom of the forming platform; the DLP optical machine, the light path adjusting device, the main control board and the control circuit are all arranged inside the machine body frame; when the biological ink is printed, the material supplementing module is additionally arranged on one side of the material containing device in an alignment way and the material containing device, the material supplementing module and the forming platform are respectively provided with the distributed temperature control modules.

Further, the shaping platform pass through the platform support and be fixed in on the slider of Z axle motor slip table, the bottom surface of platform support is fixed with upper segment, lower piece and shaping panel in proper order, three precision adjusting device evenly distributed in the top surface periphery of upper segment and stretch into in the pit that the lower piece top surface set up.

Furthermore, the forming panel is detachably fixed on the bottom surface of the lower sheet.

Furthermore, the stripping mechanism comprises a trough clamping block, a rotating shaft structure, an upper supporting plate, a material containing mechanism dragging and supporting plate, a stripping mechanism bottom plate, a buffer adjusting device, a guide limiting rod, a connector and a through motor, wherein one end of the stripping mechanism bottom plate is hinged to the upper supporting plate through the rotating shaft structure, and the middle part of the other end of the stripping mechanism bottom plate is connected with the upper end of a T-shaped rod of the through motor through the connector; the stripping mechanism comprises a stripping mechanism base plate, a material containing mechanism dragging plate, a material conveying mechanism and a material conveying mechanism, wherein the material containing mechanism dragging plate is fixed on the top surface of the stripping mechanism base plate through three buffer adjusting devices, two of the material containing mechanism dragging plates are respectively arranged at two vertex angles of one side of the stripping mechanism base plate, the other material containing mechanism dragging plate is arranged in the middle of the other side opposite to the stripping mechanism base plate, and a material groove clamping; a pair of guide grooves are formed in the two ends of the connector on the upper supporting plate, the two guide limiting rods penetrate through the two guide grooves respectively and are fixed to the bottom of the bottom plate of the stripping mechanism, and the width of each guide groove is matched with the shaft diameter of each guide limiting rod.

Furthermore, the material containing device comprises a material groove base, a material groove ring, special glass and a film stretching ring, and the material containing device is inserted between material groove clamping blocks of the peeling mechanism through the material groove base at the bottom of the material containing device; the bottom of the trough is provided with glass, a release film is laid on the glass, and the film stretching ring and the trough ring are mutually pressed to stretch the release film; the glass can be used for pertinently transmitting curing light with specific wavelength.

Furthermore, the light path adjusting device comprises a focal length adjusting slide rail and a reflector with a fixed support, the focal length adjusting slide rail and the reflector with the fixed support are fixed in the machine body frame, the DLP optical machine is arranged on the focal length adjusting slide rail, and the emitted light of the DLP optical machine is vertically emitted to the center of the bottom of the material containing device after being reflected by the reflector.

Furthermore, the feed supplement module is fixed on the top surface of silo grip block, the feed supplement module includes small-size slip table, push rod, biological ink container and heat preservation anchor clamps, the push rod sets up in biological ink container and fixes on the slider of small-size slip table, the heat preservation anchor clamps set up the periphery at biological ink container.

Furthermore, the distributed temperature control module is composed of a power output device and a temperature feedback device.

Has the advantages that: the utility model provides a 3D printing apparatus, compared with the prior art, the utility model has the advantages of as follows:

one, the utility model discloses a 3D printing apparatus stable in structure, convenient operation, the high accuracy projection of ray apparatus is with biological ink solidification for the shaping precision can reach tens of microns, and can be used to print extremely complicated molding.

And the machine body adopts a modularized functional design, and can simultaneously adapt to different printing requirements of traditional material printing and biological material printing.

Third, the utility model discloses successive layer prints, by the face adult, and the printing speed is more rapid than in the formula of extruding.

Four, print than in extruding the formula, the utility model discloses the formed part defect is few, and intensity is higher, and mechanical properties is showing and is promoting.

Fifthly, when printing to biomaterial, the utility model discloses extrude formula printing method for the FDM, break away from the restriction of extruding the head, possess accurate temperature control ability simultaneously, overcome the easy defect of condensing of biological ink.

When six, printing to biomaterial, the utility model discloses compact structure is miniaturized, is applicable to and places aseptic environment such as superclean bench, has realized in the design that prevent to print the piece and has risen because the shrinkage deformation that moisture evaporation brought and solution concentration to can practice thrift expensive biological ink.

Seventhly, the forming platform uses three precise adjusting devices to adjust the initial height and the levelness of a forming plane by using a three-point plane fixing principle, so that the printing precision is improved; three buffering adjusting devices at the material containing device realize the adjustment of the levelness of the material containing device by using the three-point surface fixing principle, can also be used for finely adjusting the height of the material containing device for accurate focusing, and plays a role in buffering when the Z axis descends, thereby further improving the printing precision.

Drawings

Fig. 1 is a schematic structural diagram of the 3D printing apparatus of the present invention;

fig. 2 is a schematic structural view of the forming platform of the present invention;

FIG. 3 is a schematic structural view of the material containing device of the present invention;

FIG. 4 is a schematic structural diagram of a feed supplement module of the present invention;

FIG. 5 is a schematic structural view of the peeling mechanism of the present invention;

FIG. 6 is a block diagram of an example printable model of the present invention;

fig. 7 is a projection view of the optical-mechanical device at section 1 of the present invention when printing the example of fig. 6;

fig. 8 is an optical-mechanical projection at section 2 of the present invention when printing the example of fig. 6.

In the figure: 1. a Z-axis motor sliding table; 2. a forming platform; 21. a platform support; 22. a precision adjustment device; 23. loading the wafer; 24. carrying out sheet discharging; 25. forming a panel; 3. a material supplementing module; 31. a small sliding table; 32. a push rod; 33. a bio-ink container; 34. a heat preservation clamp; 4. a material containing device; 41. a trough base; 42. a trough ring; 43. special glass adhered with a release film; 44. a film stretching ring; 5. a fuselage frame; 6. a focus adjustment slide rail; 7. a DLP light machine; 8. a reflector with a fixed bracket; 9. a peeling mechanism; 91. a trough clamping block; 92. a rotating shaft structure; 93. an upper support plate; 94. a holding mechanism dragging plate; 95. a stripping mechanism base plate; 96. a buffer adjustment device; 97. guiding a limiting rod; 98. a connector; 99. a through motor.

Detailed Description

The present invention is further described below with reference to specific examples, which are only exemplary and do not limit the scope of the present invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications are intended to be included within the scope of the invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

A3D printing device comprises a machine body frame 5, wherein a Z-axis motor sliding table 1 is vertically arranged on one side of the top surface of the machine body frame 5, a forming platform 2 is arranged on the Z-axis motor sliding table 1, a stripping mechanism 9 is arranged in the middle of the top surface of the machine body frame 5, a material containing device 4 is arranged on the stripping mechanism 9, and the material containing device 4 is right opposite to the bottom of the forming platform 2; DLP ray apparatus 7, light path adjusting device, main control board and control circuit all install inside the fuselage frame, and feed supplement module 3 installs additional in 4 one sides of containing device and aims at the silo, and distributed temperature control module installs respectively in containing device 4, feed supplement module 3, 2 three departments of shaping platform. The Z-axis motor sliding table 1 comprises a motor, a coupler, a screw rod or a T-shaped rod, a screw rod nut or a T-shaped rod nut, a sliding block and a frame structure for supporting and guiding, when the motor is controlled to rotate for a certain angle, the screw rod or the T-shaped rod is driven to rotate through the coupler, the screw rod or the T-shaped rod nut converts the rotary motion into linear motion, and the sliding block is driven to move up and down along the Z direction. The movement stroke of the Z-axis motor sliding table 1 determines the maximum height of the printed object. Preferably, a sliding table with high precision and high rigidity, such as a double-track ball screw sliding table, is selected.

As shown in fig. 2, the forming platform 2 is fixed on the sliding block of the Z-axis motor sliding table 1 through the platform support 21, the bottom surface of the platform support 21 is sequentially fixed with an upper plate 23, a lower plate 24 and a forming panel 25, the middle of the upper plate 23 and the lower plate 24 is fixed on the platform support 21 through bolts, and the three precise adjusting devices 22 are evenly distributed on the periphery of the top surface of the upper plate 23 and extend into the concave pits formed on the top surface of the lower plate 24, so as to increase stability for preventing rotation. The fine adjustment device 22 may be a differential head. For convenient dismantlement, shaping panel 25 can dismantle the bottom surface of fixing at lower piece 24, the lower floor plane of shaping panel 25 be the shaping plane, also be the face that the first layer solidification back of the object of printing adhered, shaping panel 25 be hard rubber material or metal material, have higher plane degree but can not be too smooth, be fit for surface oxidation treatment to avoid the printed matter to drop. When the molding panel 25 is made of metal, the molding panel 25 is fixed on the bottom surface of the lower sheet 24 in a magnetic attraction mode, the magnetic force of the magnet simultaneously satisfies the conditions of exceeding the pull-down force caused by stripping and the gravity of the printing piece, and the molding panel can be manually taken down by an operator.

The design basis of the area size of the forming platform 2 depends on the projection breadth size of the optical machine and determines the maximum projection size of the printed object on the X-Y plane. The three precise adjusting devices can ensure the levelness of the position of the forming platform, improve the printing precision and realize the convenience of adjusting the height and the levelness of the forming platform, and the three-point surface fixing principle is utilized to realize the adjustment of the initial height and the levelness of the forming plane, which is a precise adjusting mode; the height can be roughly adjusted and controlled by adjusting the position of a limit switch arranged on the motor sliding table.

As shown in fig. 5, the peeling mechanism 9 includes a trough clamping block 91, a rotating shaft structure 92, an upper supporting plate 93, a material holding mechanism dragging supporting plate 94, a peeling mechanism bottom plate 95, a buffer adjusting device 96, a guiding limiting rod 97, a connector 98 and a through motor 99, wherein one end of the peeling mechanism bottom plate 95 is hinged on the upper supporting plate 93 through the rotating shaft structure 92, and the middle part of the other end of the peeling mechanism bottom plate 95 is connected with the upper end of a T-shaped rod of the through motor 99 through the connector 98; the top surface of the stripping mechanism bottom plate 95 is fixed with a material containing mechanism dragging plate 94 through a buffer adjusting device 96, the number of the buffer adjusting devices 96 is three, two of the buffer adjusting devices 96 are respectively arranged at two top corners of one side of the stripping mechanism bottom plate 95, the other buffer adjusting device is arranged in the middle of the other side opposite to the top side, the buffer adjusting device 96 consists of three guide rods and springs sleeved on the three guide rods, the levelness of the material containing device 4 can be adjusted by utilizing a three-point surface fixing principle, the height of the material containing device can also be finely adjusted for accurate focusing, and meanwhile, the springs can play a role of buffering, namely playing a role of protecting when the forming platform is excessively pressed. The top surface of holding mechanism dragging plate 94 is equipped with silo grip block 91, go up the backup pad 93 and seted up a pair of guide way in the both ends of connector 98, two guide limit rods 97 wear to locate two guide ways respectively and fix in the bottom of peeling means bottom plate 95, the width of guide way and the shaft diameter phase-match of guide limit rod 97 take place the skew when avoiding the rotation slope. The contact force of the bottom plate of the stripping mechanism at the unit area of the joint of the connector 98 and the through motor is large, hundreds of times of stripping movement is needed for printing objects with the height of several centimeters, materials with high strength are selected for the positions for preventing abrasion, abrasion and noise are generated, the through motor is blocked and desynchronized, and finally the trough is difficult to restore to the horizontal state. When the rotor inside the through motor rotates and the rotational degree of freedom of the T-shaped rod around the axial direction is constrained by the connector 98, the rotational motion of the rotor will cause the T-shaped rod to move up and down, so that the trough is pulled from the right side to rotate and incline relative to the horizontal plane. The whole stripping mechanism 9 structure can realize that the material containing mechanism 4 rotates and inclines around the rotating shaft structure 92, so that the separation between the printing layer and the trough is easier, the downward pulling force to the vertical direction of the printed matter during the separation is effectively reduced, and the printed matter is prevented from generating fracture deformation and even falling off from the forming platform.

As shown in fig. 3, the material containing device 4 comprises a trough base 41, a trough ring 42, special glass 43 and a film stretching ring 44, the material containing device 4 is inserted between trough clamping blocks 91 of the peeling mechanism through the trough base 41 at the bottom of the material containing device, and a handle is processed on the outer end face of one side of the trough base, so that the trough is convenient to take down and mount at the same time, and the feeding before printing and the cleaning after printing are facilitated; the special glass 43 is installed at the bottom of the trough, the release film is paved on the special glass 43, and the film stretching ring 44 and the trough ring 42 are mutually pressed to stretch the release film.

Preferably, the special glass 43 is high borosilicate glass, has high transmittance for light with a wavelength of 405nm, and the release film is made of a polytetrafluoroethylene film material and has excellent release capacity and mechanical properties.

The light path adjusting device comprises a focus adjusting slide rail 6 and a reflector 8 with a fixing support, the focus adjusting slide rail and the reflector with the fixing support are fixed in a machine body frame, the fixing support is a 45-degree inclined plane support, the reflector is arranged on a 45-degree inclined plane, the DLP optical machine is arranged on the focus adjusting slide rail, a light outlet of the DLP optical machine is opposite to the reflector inclined at 45 degrees, and reflected light of the reflector vertically irradiates to the bottom center of the material containing device.

As shown in fig. 4, the feeding module 3 is fixed on the top surface of the trough clamping block 91, the feeding module 3 includes a small sliding table 31, a push rod 32, a bio-ink container 33 and a heat-preserving clamp 34, the push rod 32 is arranged in the bio-ink container 33, and the extrusion head of the bio-ink container 33 is aligned with the trough to facilitate feeding. The push rod 32 is fixed on a sliding block of the small sliding table 31, the heat preservation clamp 34 is arranged on the periphery of the biological ink container 33, and the heat preservation clamp 34 works in the printing process to prevent the biological ink at the feeding module 3 from being condensed to block the extrusion head. In printing, most of the biological ink is stored in the biological ink container 33 of the replenishing module, and the biological ink is gradually added along with printing, so that compared with the design of adding all the materials into the open space of the trough at one time, the design of adding the materials from the sealed container outwards reduces the area of the biological ink exposed in the air, reduces the water evaporation of the materials, and also reduces the concentration change of the biological materials printed for a long time. The second advantage is that expensive bio-ink material is saved, the remaining bio-ink in the bio-ink container 33 can be recycled or directly used for the next printing after the printing is finished, and the sterility can be ensured for a long time.

The distributed temperature control module is composed of a power output device and a temperature feedback device, a heating film with gum is adopted for heating, a waterproof thermistor is adopted as the temperature feedback device, a relay is used for controlling the heating film to be opened and closed for controlling the temperature, a PID algorithm or a rod algorithm is adopted in the algorithm, and the temperature is adjusted by changing the proportion of the whole period occupied by the power-on time period. The distributed temperature control module respectively heats and preserves heat of the biological materials at the three positions of the material containing device, the material supplementing module and the forming platform so as to prevent the materials from condensing. A round square hole-shaped heating film is attached to the lower bottom surface of the special glass at one position and used for heating and insulating the biological ink in the trough; the second part is attached between the forming panel 25 and the lower sheet 24 of the forming platform by adopting a circular heating film and is used for preserving heat of the printed piece adhered on the forming platform; the third place uses a rectangular heating film, which is adhered around the circumference of the heat-insulating jig 34, for heat-insulating the bio-ink container 33.

3D printing apparatus's theory of operation as follows:

the Z-axis motor sliding table can drive the forming platform to reciprocate up and down so as to realize the functions of demoulding layer by layer and accurately controlling the thickness of the printing layer; the forming platform is fixed on a sliding block of the motor sliding table and can reciprocate up and down along with the sliding block, and the first layer of the printed matter is adhered to the bottom surface of the forming platform after being cured; the stripping mechanism can realize that the trough base rotates and inclines around the rotating shaft, and effectively reduces the downward pulling force to the printed matter in the vertical direction during separation, so as to prevent the printed matter from breaking and deforming and even falling off from the forming platform; the printing material is placed in the material containing device, the bottom of the material containing device is made of special glass, and the printing material has high transmittance to light with a wave band of 405 nm; the horizontal projection of the optical machine is reflected by a 45-degree reflector and then vertically exposed upwards, so that the biological ink is solidified into a corresponding projection shape. Aiming at the printing of biological materials, a distributed temperature control module and a material supplementing module are required to be additionally arranged on a main body, the distributed temperature control module heats and preserves the biological materials at three positions of a material containing device, the material supplementing module and a forming platform in the whole printing process so as to prevent the materials from condensing, and the smooth printing is ensured. The feeding module feeds regularly to reduce concentration variations due to evaporation of moisture from air-exposed biological material in the trough and to save expensive printing material.

3D printing apparatus's assembly flow as follows:

during the unit mount, on the slider of shaping platform is fixed in Z axle motor slip table through threaded connection, motor slip table vertical mount was in the fixed orifices department of last backup pad, goes up the backup pad and erects on the lower backup pad through four stands in order to constitute the fuselage frame. One side of the stripping mechanism is connected with a T-shaped rod of the through motor, and the other side of the stripping mechanism is arranged on the upper supporting plate through a rotating shaft or hinge structure; the two sides of the material containing device are inserted into the clamping blocks of the stripping mechanism; the material supplementing module is fixedly arranged on one side of the stripping mechanism, and an extrusion head of the biological ink container is aligned with the trough so as to facilitate material supplementing; the distributed temperature control modules are dispersedly arranged at three positions, namely the lower bottom surface of the special glass of the trough, the periphery of the material supplementing module container and the inside of the forming platform; the optical machine is arranged on the lower supporting plate through double guide rails and can slide left and right so as to adjust the distance between the optical machine lens and the light curing molding surface, and the distance is just equal to the focal length of the optical machine; similarly, the mirror is mounted on the lower support plate through a 45-degree bracket to constitute an optical path.

Claims (8)

1. The utility model provides a 3D printing apparatus which characterized in that: the machine body comprises a machine body frame, wherein a Z-axis motor sliding table is vertically arranged on one side of the top surface of the machine body frame, a forming platform is arranged on the Z-axis motor sliding table, a stripping mechanism is arranged in the middle of the top surface of the machine body frame, a material containing device is arranged on the stripping mechanism, and the material containing device is over against the bottom of the forming platform; the DLP optical machine, the light path adjusting device, the main control board and the control circuit are all arranged inside the machine body frame; when the biological ink is printed, the material supplementing module is additionally arranged on one side of the material containing device in an alignment way and the material containing device, the material supplementing module and the forming platform are respectively provided with the distributed temperature control modules.

2. The 3D printing device according to claim 1, characterized in that: the shaping platform be fixed in on the slider of Z axle motor slip table through the platform support, the bottom surface of platform support is fixed with upper segment, lower piece and shaping panel in proper order, three precision adjusting device evenly distributed in the top surface periphery of upper segment and stretch into the pit that the lower piece top surface set up.

3. The 3D printing device according to claim 2, characterized in that: the molding panel is detachably fixed on the bottom surface of the lower sheet.

4. The 3D printing device according to claim 1, characterized in that: the stripping mechanism comprises a trough clamping block, a rotating shaft structure, an upper supporting plate, a material containing mechanism dragging plate, a stripping mechanism bottom plate, a buffering and adjusting device, a guiding limiting rod, a connector and a through motor, wherein one end of the stripping mechanism bottom plate is hinged to the upper supporting plate through the rotating shaft structure, and the middle part of the other end of the stripping mechanism bottom plate is connected with the upper end of a T-shaped rod of the through motor through the connector; the stripping mechanism comprises a stripping mechanism base plate, a material containing mechanism dragging plate, a material conveying mechanism and a material conveying mechanism, wherein the material containing mechanism dragging plate is fixed on the top surface of the stripping mechanism base plate through three buffer adjusting devices, two of the material containing mechanism dragging plates are respectively arranged at two vertex angles of one side of the stripping mechanism base plate, the other material containing mechanism dragging plate is arranged in the middle of the other side opposite to the stripping mechanism base plate, and a material groove clamping; a pair of guide grooves are formed in the two ends of the connector on the upper supporting plate, the two guide limiting rods penetrate through the two guide grooves respectively and are fixed to the bottom of the bottom plate of the stripping mechanism, and the width of each guide groove is matched with the shaft diameter of each guide limiting rod.

5. The 3D printing device according to claim 4, characterized in that: the material containing device comprises a material groove base, a material groove ring, glass and a film stretching ring, and is inserted between material groove clamping blocks of the peeling mechanism through the material groove base at the bottom of the material containing device; the bottom of the trough is provided with glass, a release film is laid on the glass, and the film stretching ring and the trough ring are mutually pressed to stretch the release film; the glass can be used for transmitting curing light in a targeted manner.

6. The 3D printing device according to claim 1, characterized in that: the DLP optical machine is arranged on the focus adjusting slide rail, and the emitted light of the DLP optical machine is vertically emitted to the center of the bottom of the material containing device after being reflected by the reflector.

7. The 3D printing device according to claim 4, characterized in that: the feed supplement module is fixed on the top surface of silo grip block, the feed supplement module includes small-size slip table, push rod, biological ink container and heat preservation anchor clamps, the push rod sets up in biological ink container and fixes on the slider of small-size slip table, the heat preservation anchor clamps set up the periphery at biological ink container.

8. The 3D printing device according to claim 1, characterized in that: the distributed temperature control module is composed of a power output device and a temperature feedback device.

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