A 3D printing platform

Abstract

The present invention discloses a 3D printing platform, which includes a main body component including a support base; a printing support component including a printing support platform fixedly connected to the upper side of the support base. A first flow channel forming shaft slidably connected to the support base can extend into a printing sink formed on the printing support platform. A moving through hole is formed in the center of the first flow channel forming shaft, and a second flow channel forming shaft can extend out of the first flow channel forming shaft along the moving through hole. A number of flow channel forming members are movably connected to the first flow channel forming shaft, and the flow channel forming members can be attached to the outer side of the first flow channel forming shaft; when the flow channel forming members are attached to the outer side of the first flow channel forming shaft, connection through holes having the same shapes as the outer edges of the flow channel forming members and the first flow channel forming shaft are formed on the printing support platform. The present invention can realize the active adjustment of the microchannel shape, and is convenient for directly printing a chip body with different-shaped liquid storage pools or other microchannels on the printing support platform body by pouring chip materials.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing microfluidic chips, and in particular to a 3D printing platform. Background Art

[0002] 3D printing belongs to a kind of rapid prototyping technology. It is a direct manufacturing technology based on digital model files and can manufacture almost any three-dimensional entity. 3D printing uses powder metals or plastic and other bondable materials to construct objects by means of layer-by-layer stacking and accumulation.

[0003] In the prior art, when using a 3D printer to print a chip body with a liquid storage pool or other functional microchannels, the three-dimensional channels in the three-dimensional microchannel diagram are sliced layer by layer along a direction parallel to the bottom surface of the chip, and the flow channel solid structure and the chip material are cast in sequence, and the flow channel shape is printed in sequence to obtain a three-dimensional flow channel solid structure. Then the three-dimensional flow channel solid structure is dissolved to obtain a chip body with microchannels, and it is impossible to directly print a chip body with microchannels by casting the chip material. Summary of the Invention

[0004] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract and the title of the present application, to avoid obscuring the purpose of this part, the abstract and the title, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] In view of the above and / or existing problems in using 3D printing technology to print microfluidic chips, the present invention is proposed.

[0006] Therefore, the purpose of the present invention is to provide a 3D printing platform that can actively adjust the shape of the microchannel, facilitating the direct printing of a chip body with a liquid storage pool or other microchannels of different shapes on the printing support platform body by casting the chip material.

[0007] To solve the above technical problems, the present invention provides the following technical solution: A 3D printing platform, which includes,

[0008] A main body component, including a fixed bracket, and a support seat fixedly connected to the fixed bracket;

[0009] Printing support assembly, including a printing support platform fixedly connected to the upper side of the support base. One end of the printing support platform facing upward has a printing sink. A first runner forming shaft that can move in the height direction and extend into the printing sink is slidably connected to the support base. A moving through hole is opened in the center of the first runner forming shaft. A second runner forming shaft can extend out of the first runner forming shaft along the moving through hole. A number of runner forming members are movably connected to the first runner forming shaft, and the runner forming members can be attached to the outer side of the first runner forming shaft. When the runner forming members are attached to the outer side of the first runner forming shaft, connection through holes having the same shapes as the outer edges of the runner forming members and the first runner forming shaft are opened on the printing support platform.

[0010] As a preferred solution of the 3D printing platform of the present invention, wherein: a transmission assembly for independently or synchronously moving the first runner forming shaft or the second runner forming shaft is provided in the support base.

[0011] As a preferred solution of the 3D printing platform of the present invention, wherein: a turntable is rotatably connected in the support base. The transmission assembly includes an intermediate lead screw rotatably connected to the support base. A driven lead screw is rotatably connected to the turntable. The intermediate lead screw can drive the driven lead screw to rotate. The intermediate lead screw passes through a rotation hole at the center of the turntable and is threadedly connected to the inner end of the second runner forming shaft. The lower end of the first runner forming shaft is rotatably connected to a first runner forming connection seat. A second runner forming connection seat is fixedly connected to the lower side of the first runner forming connection seat. The outer diameters of the first runner forming connection seat and the second runner forming connection seat are the same. The second runner forming connection seat is slidably connected in the support base. The driven lead screw is threadedly connected to one end of the second runner forming connection seat away from the second runner forming shaft.

[0012] As a preferred solution of the 3D printing platform of the present invention, wherein: a driving member is fixedly connected to the intermediate lead screw near the turntable. A moving sleeve is slidably connected to the driven lead screw. A driven member that can cooperate with the driving member is connected to the moving sleeve.

[0013] As a preferred solution of the 3D printing platform of the present invention, wherein: a position adjustment driver is fixedly connected to the second runner forming connection seat. An adjustment rod capable of performing reciprocating linear motion in the height direction is connected to the position adjustment driver. An adjustment plate is fixedly connected to the adjustment rod. The moving sleeve is rotatably connected to the adjustment plate.

[0014] As a preferred solution of the 3D printing platform of the present invention, wherein: a limit sleeve for restricting the axial movement of the driven lead screw is connected to the driven lead screw on the side of the turntable away from the driven member. The limit sleeve is attached to the side of the turntable away from the driven member.

[0015] As a preferred solution of the 3D printing platform of the present invention, wherein: the second runner forming connecting seat can also rotate along the inner edge of the support seat. A transmission sleeve is connected to the active lead screw. The transmission sleeve is closely adjacent to the side of the active part away from the turntable. The adjusting plate can just slide along the outer edge of the transmission sleeve. The outer edge of the transmission sleeve is circular. A sliding sink is formed on the side of the adjusting plate opposite to the transmission sleeve. The adjusting plate is slidably connected to a connecting block through the sliding sink. A connecting sink is formed on the outer circumference of the transmission sleeve. A limiting block is fixed on the transmission sleeve at the position of the connecting sink. The side of the connecting block away from the driven part has a first inclined surface, the side of the connecting block opposite to the driven part has a second inclined surface, and the side of the limiting block opposite to the active part has a third inclined surface. When the connecting block moves in the direction away from the active part and enters the connecting sink, the first inclined surface fits on the second inclined surface, and the outer end of the connecting block extends beyond the outer edge of the transmission sleeve. An elastic member is fixedly connected in the sliding sink of the adjusting plate. One end of the elastic member away from the inner edge of the sliding sink is fixedly connected to the connecting block. When the connecting block leaves the connecting sink, the elastic member is in a compressed state. A plurality of sliding grooves corresponding to the runner forming members one by one are arranged on the outer circumference of the first runner forming shaft. When the second runner forming connecting seat rotates, the runner forming members slide along the corresponding sliding grooves, and the outer ends of the runner forming members can continuously extend out of the first runner forming shaft.

[0016] As a preferred solution of the 3D printing platform of the present invention, wherein: a plurality of curved rotating grooves are arranged on the first runner forming connecting seat. Limiting sinks are formed on the first runner forming connecting seat on both sides of the rotating grooves. The runner forming member includes a liquid storage runner forming part that can fit on the outer circumference of the first runner forming shaft. A flow-through forming part that can just slide in the sliding groove is fixed on the liquid storage runner forming part. The flow-through forming part is away from the liquid storage runner forming part and is connected to a sliding block that can just slide along the rotating groove at the end opposite to the first runner forming connecting seat. A limiting sliding sleeve is threadedly connected to the sliding block in the limiting sink.

[0017] As a preferred solution of the 3D printing platform of the present invention, wherein: a rotating connecting ring is fixed on the lower side of the first runner forming shaft. An annular rotating sink is formed on the upper side of the first runner forming connecting seat. The first runner forming connecting seat is rotationally connected to the rotating connecting ring through the rotating sink. A limiting part for restricting the rotation of the first runner forming shaft is fixed on the lower side of the liquid storage runner forming part. When the lower side of the liquid storage runner forming part fits on the printing support platform on the lower side of the printing sink, the limiting part is in the connecting through hole.

[0018] As a preferred solution of the 3D printing platform of the present invention, wherein: a rotation-limiting rod which can make a reciprocating linear motion and is horizontally arranged is connected to the support base, and the rotation-limiting rod is used to limit the rotation of the second flow channel forming connector; a non-circular moving groove is formed in the support base; the rotation-limiting rod includes a moving part which can just slide along the moving groove; a screw rod is fixed on the outer side of the moving part, the outer diameter of the screw rod is smaller than the size of the moving groove; a rotating nut is rotatably connected to the outer end of the support base, and the screw rod is in threaded connection with the rotating nut.

[0019] Compared with the prior art, the present invention has the following technical effects: when a chip body with a liquid storage pool needs to be printed, the upper side of the first flow channel forming shaft is flush with the lower side of the printing sink, and the second flow channel forming shaft extends into the printing sink. When using a 3D printer for printing, the chip material can be directly poured into the printing support platform. After printing is completed, the processing of the chip body with a liquid storage pool can be completed; when a chip body with a larger liquid storage pool needs to be printed, the upper sides of the first flow channel forming shaft and the second flow channel forming shaft are flush, and the liquid storage flow channel forming part is attached to the outer side of the first flow channel forming shaft. When the first flow channel forming shaft and the second flow channel forming shaft are synchronously moved upward to a set position in the printing sink, in this case, the processing of the chip body with a larger liquid storage pool can be realized; when a chip body with a plurality of liquid storage pools and the liquid storage pools are communicated with a reaction flow channel through a connecting flow channel needs to be printed, the upper sides of the first flow channel forming shaft and the second flow channel forming shaft are flush, and the liquid storage flow channel forming part leaves the outer side of the first flow channel forming shaft and moves to a set position. In this case, a chip body with a reaction pool and the outer periphery of the reaction pool is communicated with the corresponding liquid storage pool through a plurality of connecting flow channels can be realized; the present invention can realize the active adjustment of the shapes of multiple flow channels and improve the 3D printing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings according to these drawings without creative efforts. Among them:

[0021] Figure 1 is the three-dimensional structure of the present invention Figure 1 .

[0022] Figure 2 is Figure 1 the partial enlarged view of A in

[0023] Figure 3 is the three-dimensional structure of the present invention Figure 2 .

[0024] Figure 4 is the three-dimensional structure diagram of the present invention after hiding the fixed bracket, the driving motor and the motor bracket.

[0025] Figure 5 is Figure 4 The end view at position B-B in

[0026] Figure 6 is Figure 5 The enlarged partial view at position C in

[0027] Figure 7 is the three-dimensional structure diagram in which the runner forming parts of the present invention are axially connected together.

[0028] Figure 8 is the three-dimensional structure diagram of the runner forming part of the present invention.

[0029] Figure 9 is the schematic structural diagram after hiding the second runner forming shaft and the second runner forming connection seat in the runner forming part.

[0030] Figure 10 is the structural diagram inside the support seat of the present invention.

[0031] In the figure, 100 is the main body component, 101 is the fixed bracket, 101a is the fixed ring, 101a-1 is the fixing hole, 102 is the support seat, 200 is the printing support component, 201 is the first runner forming shaft, 201a is the sliding groove, 202 is the printing support platform, 202a is the printing sink, 202b is the connection through hole, 203 is the second runner forming shaft, 204 is the runner forming part, 204a is the runner forming portion, 204a-1 is the limiting portion, 204b is the flow-through forming portion, 204b-1 is the slot, 205 is the cover plate, 206 is the rotating nut, 207 is the screw rod, 208 is the first runner forming connection seat, 208a is the rotating groove, 208b is the limiting sink, 209 is the second runner forming connection seat, 209a is the rotation limiting sink, 210 is the sliding block, 211 is the limiting sliding sleeve, 212 is the driving motor, 213 is the motor bracket, 300 is the transmission component, 301 is the adjusting rod, 302 is the position adjusting driver, 303 is the elastic member, 304 is the limiting sleeve, 305 is the turntable, 306 is the driven lead screw, 306a is the sliding section, 307 is the adjusting plate, 307a is the sliding sink, 307b is the rotating connection sink, 308 is the moving sleeve, 308a is the second screw hole, 308b is the sliding portion, 309 is the active member, 310 is the connecting sleeve, 310a is the first screw hole, 311 is the driven member, 312 is the connecting block, 312a is the first inclined surface, 312b is the second inclined surface, 313 is the transmission sleeve, 313a is the limiting block, 313b is the connecting sink hole., 314 is the intermediate lead screw Detailed implementation manners

[0032] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given in conjunction with the accompanying drawings of the specification.

[0033] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may be practiced in other ways than those specifically described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0034] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0035] Embodiment 1

[0036] Referring to Figures 1 to 6 , this embodiment provides a 3D printing platform that can assist a 3D printer in printing three-dimensional microchannel structures of liquid storage pools with different specifications.

[0037] A 3D printing platform includes a main body component 100, including a fixed bracket 101. A support seat 102 is fixedly connected to the fixed bracket 101, and a printing support component 200 for forming a microchannel is connected to the support seat 102.

[0038] Specifically, the printing support component 200 includes a printing support platform 202 fixedly connected to the upper side of the support seat 102. The upper end of the printing support platform 202 has a printing sink 202a. A first flow channel forming shaft 201 that can move in the height direction and extend into the printing sink 202a is slidably connected to the support seat 102. A moving through hole is opened in the center of the first flow channel forming shaft 201, and a second flow channel forming shaft 203 can extend out of the first flow channel forming shaft 201 along the moving through hole.

[0039] When printing a chip body with a liquid storage pool, the upper side of the first flow channel forming shaft 201 is flush with the lower side of the printing sink 202a, and the second flow channel forming shaft 203 extends into the printing sink 202a. When using a 3D printer for printing, the chip material can be directly poured into the printing support platform 202. After printing is completed, the processing of the chip body with a liquid storage pool can be completed. When printing a chip body with a larger liquid storage pool, the upper sides of the first flow channel forming shaft 201 and the second flow channel forming shaft 203 are flush, and the liquid storage flow channel forming part 204a is attached to the outside of the first flow channel forming shaft 201. When the first flow channel forming shaft 201 and the second flow channel forming shaft 203 are synchronously moved upward to a set position in the printing sink 202a, the processing of the chip body with a larger liquid storage pool can be achieved in this case.

[0040] In order to further realize the lifting of the first runner forming shaft 201 or the second runner forming shaft 203, a transmission assembly 300 for independently or synchronously moving the first runner forming shaft 201 or the second runner forming shaft 203 is provided in the support base 102. The transmission assembly 300 includes an intermediate lead screw 314 rotatably connected to the support base 102. The intermediate lead screw 314 extends downward out of the support base 102. A motor bracket 213 is fixedly connected to the fixed bracket 101 below the support base 102. A driving motor 212 is fixedly connected to the upper side of the motor bracket 213. The driving motor 212 is connected to the intermediate lead screw 314 through a coupling. A turntable 305 is rotatably connected in the support base 102. A driven lead screw 306 is rotatably connected to the turntable 305. The intermediate lead screw 314 can drive the driven lead screw 306 to rotate. The intermediate lead screw 314 passes through the rotation hole at the center of the turntable 305 and is threadedly connected to the inner end of the second runner forming shaft 203. The lower end of the first runner forming shaft 201 is connected to a first runner forming connection seat 208. A second runner forming connection seat 209 capable of sliding up and down along the inner edge of the support base 102 is fixedly connected to the lower side of the first runner forming connection seat 208. The outer diameters of the first runner forming connection seat 208 and the second runner forming connection seat 209 are the same. The driven lead screw 306 is threadedly connected to one end of the second runner forming connection seat 209 away from the second runner forming shaft 203. An active part 309 is fixedly connected to the intermediate lead screw 314 near the turntable 305. A moving sleeve 308 is slidably connected to the driven lead screw 306. A driven part 311 capable of cooperating with the active part 309 is connected to the moving sleeve 308. One end of the driven lead screw 306 near the turntable 305 is non-circular. For the convenience of description, this section is called a sliding section 306a. A sliding part 308b capable of just axially sliding along the sliding section 306a is fixed to one side of the moving sleeve 308 relative to the turntable 305. An annular rotation connection sink 307b is formed on the side of the adjusting plate 307 away from the turntable 305. The adjusting plate 307 is rotationally connected through the rotation connection sink 307b to a connection sleeve 310 connected to the intermediate lead screw 314. A first screw hole 310a and a second screw hole 308a are coaxially provided on the connection sleeve 310 and the moving sleeve 308 respectively. As Figure 10As shown in the figure, during installation, the fixing bolts are screwed into the first screw hole 310a and the second screw hole 308a to connect the connecting sleeve 310 and the moving sleeve 308 together, preventing axial movement of the moving sleeve 308; a limiting sleeve 304 for restricting axial movement of the driven lead screw 306 is connected to the driven lead screw 306 on the side of the turntable 305 away from the driven member 311. The limiting sleeve 304 is attached to the side of the turntable 305 away from the driven member 311. A position adjustment drive 302 is fixedly connected to the second flow channel forming seat 209. The position adjustment drive 302 is preferably an electric push rod. An adjustment rod 301 capable of performing reciprocating linear motion in the height direction is connected to the position adjustment drive 302. An adjustment plate 307 is fixedly connected to the adjustment rod 301. The moving sleeve 308 is rotatably connected to the adjustment plate 307. In this embodiment, both the driven member 311 and the driving member 309 are preferably gears and have the same structure.

[0041] In the initial state, the upper sides of the first flow channel forming shaft 201 and the second flow channel forming shaft 203 are flush, and both extend into the printing sink 202a to a set position. At this time, a chip body with a liquid storage pool having the same outer shape as the outer edge of the first flow channel forming shaft 201 can be printed. In actual implementation, a number of protrusions can also be provided in the printing support platform 202 according to actual needs to form different three-dimensional microchannels; when a chip body with a smaller-sized liquid storage pool needs to be printed, the position adjustment drive 302 acts to move the adjustment rod 301 in the direction of the driving member 309. The adjustment rod 301 drives the moving sleeve 308 to move through the adjustment plate 307, and the moving sleeve 308 drives the driven member 311 to move. When the driven member 311 and the driving member 309 cooperate, the position adjustment drive 302 stops acting; the drive motor 212 acts, and the intermediate lead screw 314 rotates. The intermediate lead screw 314 drives the driven member 311 to rotate through the driving member 309, and the driven member 311 drives the driven lead screw 306 to rotate. The intermediate lead screw 314 and the driven lead screw 306 respectively drive the second flow channel forming shaft 203 and the second flow channel forming seat 209 to move. By controlling the action direction of the drive motor 212, the second flow channel forming shaft 203 and the second flow channel forming seat 209 move downward together. When the upper sides of the second flow channel forming shaft 203 and the first flow channel forming shaft 201 are flush with the printing support platform 202 below the printing sink 202a, the drive motor 212 stops acting; control the position adjustment drive 302 to act in the reverse direction to move the driven member 311 upward away from the driving member 309 to a set position, and the position adjustment drive 302 stops acting; control the drive motor 212 to act to move the second flow channel forming shaft 203 upward. When the upper side of the second flow channel forming shaft 203 extends into the printing sink 202a to a set height, the drive motor 212 stops acting. In this state, the adjustment of the microchannel structure of the smaller-sized liquid storage pool is achieved.

[0042] Embodiment 2

[0043] Reference Figures 7 to 9 This embodiment provides a 3D printing platform. The difference between this embodiment and embodiment 1 is that it can assist a 3D printer to print a three-dimensional microfluidic structure having a plurality of liquid reservoirs, and the liquid reservoirs are connected to reaction channels through connecting channels.

[0044] Specifically, the first flow channel forming shaft 201 is connected with a plurality of flow channel forming parts 204, and the flow channel forming parts 204 can be attached to the outside of the first flow channel forming shaft 201; when the flow channel forming parts 204 are attached to the outside of the first flow channel forming shaft 201, a connecting through hole 202b with the same shape as the flow channel forming parts 204 and the outer edge of the first flow channel forming shaft 201 is opened on the printing support platform 202, and the second flow channel forming connecting seat 209 can also rotate along the inner edge of the support seat 102, and the driving screw is connected with a transmission sleeve 313, and the printing support platform 202 is provided with a plurality of connecting through holes 202b with the same shape as the flow channel forming parts 204 and the outer edge of the first flow channel forming shaft 201. The transmission sleeve 313 is close to the side of the active member 309 away from the turntable 305, and the adjustment plate 307 can slide along the outer edge of the transmission sleeve 313. The outer edge of the transmission sleeve 313 is circular, and the adjustment plate 307 is provided with a sliding groove 307a on the side opposite to the transmission sleeve 313. The adjustment plate 307 is just slidably connected to the connecting block 312 through the sliding groove 307a. The outer periphery of the transmission sleeve 313 is provided with a connecting counterbore 313b. A limiting block 313a is fixed on the transmission sleeve 313 at the connecting counterbore 313b. The connecting block 312 is away from The driven member 311 has a first inclined surface 312a on one side, the connecting block 312 has a second inclined surface 312b on the side opposite to the driven member 311, and the limit block 313a has a third inclined surface on the side opposite to the active member 309. When the connecting block 312 moves in a direction away from the active member 309 and enters the connecting counterbore 313b, the first inclined surface 312a is attached to the third inclined surface, the outer end of the connecting block 312 exceeds the transmission sleeve 313, and the elastic member 307 is fixedly connected to the sliding counterbore 307a of the adjusting plate 307. 3. One end of the elastic member 303 away from the inner edge of the sliding groove 307a is fixedly connected to the connecting block 312; when the connecting block 312 leaves the connecting counterbore 313b, the elastic member 303 is in a compressed state; a plurality of sliding grooves 201a corresponding to the flow channel forming member 204 are arranged on the outer periphery of the first flow channel forming shaft 201, and when the second flow channel forming connecting seat 209 rotates, the flow channel forming member 204 slides along the corresponding sliding groove 201a, and the outer end of the flow channel forming member 204 can continuously extend out of the first flow channel forming shaft 201.

[0045] When the outer sides of the first runner forming shaft 201 and the second runner forming shaft 203 are set in position within the printing sink 202a, the connecting block 312 can be inserted into the connecting sink hole 313b. When it is necessary to print a chip body having a number of liquid storage pools, and the liquid storage pools are connected to a reaction runner through a connecting runner, the position adjustment driver 302 is controlled to act, so that the adjustment plate 307 moves towards the direction where the connecting sink hole 313b is located. When the connecting block 312 starts to move to the position where the connecting sink hole 313b is located, the connecting block 312 is inserted into the connecting sink hole 313b under the action of the elastic member 303. The first inclined surface 312a of the connecting block 312 abuts against the third inclined surface. The position adjustment driver 302 stops acting, realizing the connection between the intermediate lead screw 314 and the second runner forming connection seat 209. The driving motor 212 acts, and the intermediate lead screw 314 rotates. The intermediate lead screw 314 drives the second runner forming connection seat 209 to rotate through the adjustment plate 307. The action of the driving motor 212 is controlled to release, so that the runner forming member 204 moves outwards. When the runner forming member 204 moves to the set position, the driving motor 212 stops acting.

[0046] Specifically, a number of curved rotating grooves 208a are arranged on the first runner forming connection seat 208. In this embodiment, three rotating grooves 208a are provided. Limiting sink grooves 208b are formed on the first runner forming connection seat 208 on both sides of the rotating groove 208a. The runner forming member 204 includes a liquid storage runner forming portion 204a that can fit around the outer circumference of the first runner forming shaft 201. A flow-through forming portion 204b that can just slide in the sliding groove 201a is fixed on the liquid storage runner forming portion 204a. A slot 204b-1 is formed at the end of the flow-through forming portion 204b. An installation sink groove is formed at the upper end of the first runner forming shaft 201. The first runner forming shaft 201 is just connected with a cover plate 205 through the installation sink groove. The upper side of the flow-through forming portion 204b at the slot 204b-1 abuts against the lower side of the cover plate 205. In the initial state, the flow-through forming portion 204b outside the slot 204b-1 is flush with the upper side of the cover plate 205 and abuts against the cover plate 205. One end of the flow-through forming portion 204b away from the liquid storage runner forming portion 204a and relatively facing the first runner forming connection seat 208 is connected with a sliding block 210 that can just slide along the rotating groove 208a. After inserting the flow-through forming portion 204b into the sliding groove 201a on the lower side of the cover plate 205, the sliding block 210 is connected to the lower side of the flow-through forming portion 204b. A limiting sliding sleeve 211 for restricting the upward and downward movement of the runner forming member 204 in the axial direction is threadedly connected to the sliding block 210 in the limiting sink groove 208b.

[0047] When the second flow channel forming connector 209 rotates, the first flow channel forming connector 208 rotates. The first flow channel forming connector 208 drives the sliding block 210 to slide along the rotation groove 208a. Under the action of the sliding block 210, the flow channel forming part 204b slides along the sliding groove 201a, controlling the action direction of the driving motor 212, so that the liquid storage flow channel forming part 204a continuously moves outward. When the liquid storage flow channel forming part 204a moves to the set position, the driving motor 212 stops operating. In this state, a part of the liquid storage flow channel forming part 204a corresponds to the liquid storage tank, a part of the flow channel forming part 204b corresponds to the connecting flow channel, and the outer edge of the first flow channel forming shaft 201 corresponds to the reaction tank; a new cover plate 205 is replaced. A plurality of sealing plates are arranged on the outer periphery of the new cover plate 205. The sealing plates are inserted into the sliding groove 201a and their outer peripheries are attached to the flow channel forming part 204b outside the slot 204b-1, so that the upper side of the first flow channel forming shaft 201, the upper side of the flow channel forming part 204b in the sliding groove 201a, and the upper side of the cover plate 205 are a flat surface.

[0048] Specifically, a rotating connection ring is fixed to the lower side of the first flow channel forming shaft 201. An annular rotating sunk groove is formed on the upward side of the first flow channel forming connector 208. The first flow channel forming connector 208 is rotationally connected to the rotating connection ring through the rotating sunk groove, which can further improve the reliability of the rotation of the first flow channel forming connector 208; a limiting part 204a-1 for restricting the rotation of the first flow channel forming shaft 201 is fixed to the lower side of the liquid storage flow channel forming part 204a. When the lower side of the liquid storage flow channel forming part 204a is attached to the printing support platform 202 on the lower side of the printing sunk groove 202a, the limiting part 204a-1 is in the connection through hole 202b.

[0049] When the liquid storage flow channel forming part 204a is in the printing sunk groove 202a, the limiting part 204a-1 is in the connection through hole 202b on the lower side of the liquid storage flow channel forming part 204a. The first flow channel forming shaft 201 cannot rotate under the action of the limiting part 204a-1, so as to realize the movement of the flow channel forming part 204a when the first flow channel forming connector 208 rotates; when the liquid storage flow channel forming part 204a descends, the liquid storage flow channel forming part 204a gradually inserts into the connection through hole 202b. The liquid storage flow channel forming part 204a cannot rotate in the connection through hole 202b, and the first flow channel forming shaft 201 cannot rotate under the action of the liquid storage flow channel forming part 204a, improving the reliability of the lifting of the first flow channel forming shaft 201.

[0050] In this embodiment, when printing a chip body having a plurality of liquid storage pools, and the liquid storage pools are connected to a reaction flow channel through a connecting flow channel, the upper sides of the first flow channel forming shaft 201 and the second flow channel forming shaft 203 are flush, and the liquid storage flow channel forming part 204a moves away from the outside of the first flow channel forming shaft 201 and moves to a set position. In this case, a chip body having a reaction pool and the outer periphery of the reaction pool is connected to the corresponding liquid storage pool through a plurality of connecting flow channels can be realized.

[0051] Embodiment 3

[0052] Referring to Figure 10 , this embodiment provides a 3D printing platform, which is different from Embodiments 1 and 2 in that it can further improve the reliability of the lifting of the first flow channel forming shaft 201.

[0053] Specifically, a rotation limiting rod which can perform a reciprocating linear motion and is horizontally arranged for limiting the rotation of the second flow channel forming connection seat 209 is connected to the support seat 102. A non-circular moving groove is formed in the support seat 102. The rotation limiting rod includes a moving part which can just slide along the moving groove. A screw rod 207 is fixed on the outside of the moving part. The outer diameter of the screw rod 207 is smaller than the size of the moving groove. The outer end of the support seat 102 is rotatably connected with a rotating nut 206. The screw rod 207 is in threaded connection with the rotating nut 206. A long strip-shaped rotation limiting sunk groove 209a is formed in the outer periphery of the second flow channel forming connection seat 209. The inner end of the rotation limiting rod can just be inserted into the rotation limiting sunk groove 209a.

[0054] In the initial state, rotate the rotating nut 206, adjust the rotation direction of the rotating nut 206, so that the screw rod 207 continuously screws into the support seat 102. The rotation limiting rod is in the rotation limiting sunk groove 209a. The second flow channel forming connection seat 209 just slides up and down along the rotation limiting rod through the rotation limiting sunk groove 209a. At this time, the second flow channel forming connection seat 209 cannot rotate. When the driven lead screw 306 rotates, the second flow channel forming connection seat 209 can only perform a lifting motion; when it is necessary to make the second flow channel forming connection seat 209 rotate, rotate the rotating nut 206 in the reverse direction, and the rotation limiting rod leaves the rotation limiting sunk groove 209a.

[0055] It can be known from the above three embodiments that the present invention can realize the active adjustment of the shapes of multiple flow channels and improve the 3D printing efficiency.

[0056] Embodiment 4

[0057] Referring to Figure 1 , this embodiment provides a 3D printing platform, which is different from Embodiments 1 to 3 in that it can further facilitate the connection between the support seat 102 and the fixed bracket 101.

[0058] Specifically, the center of the fixed bracket 101 has a number of fixed rings 101a arranged at intervals in the height direction. A limiting plate is fixed to the lower side of the lowermost fixed ring 101a. A number of fixing holes 101a-1 for facilitating connection with the support base 102 are arranged on the fixed ring 101a. During installation, align the runner forming part 204a with the connection through hole 202b, and insert the support base 102 downward into the fixed ring 101a. When the support base 102 abuts against the upper side of the limiting plate, screw a fixing bolt into the fixing hole 101a-1 and the support base 102 to fixedly connect the support base 102 to the fixed bracket 101, thus realizing the fixed connection between the support base 102 and the fixed bracket 101.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. The threads in this application are not drawn, but it does not affect those skilled in the art to understand the technical solutions. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A 3D printing platform, characterized in that: It includes: A main body component (100), including a fixing bracket (101), and a support base (102) is fixedly connected to the fixing bracket (101); A printing support component (200), including a printing support platform (202) fixedly connected to the upper side of the support base (102). One end of the printing support platform (202) facing upward has a printing sink (202a). A first runner forming shaft (201) that can move in the height direction and extend into the printing sink (202a) is slidably connected to the support base (102). A moving through hole is formed in the center of the first runner forming shaft (201). A second runner forming shaft (203) can extend out of the first runner forming shaft (201) along the moving through hole. A number of runner forming members (204) are movably connected to the first runner forming shaft (201), and the runner forming members (204) can be attached to the outer side of the first runner forming shaft (201); when the runner forming members (204) are attached to the outer side of the first runner forming shaft (201), a connection through hole (202b) having the same shape as the outer edges of the runner forming members (204) and the first runner forming shaft (201) is formed in the printing support platform (202); A transmission component (300) for independently or synchronously moving the first runner forming shaft (201) or the second runner forming shaft (203) is provided inside the support base (102). A turntable (305) is rotatably connected inside the support base (102). The transmission component (300) includes an intermediate lead screw (314) rotatably connected to the support base (102). A driven lead screw (306) is rotatably connected to the turntable (305). The intermediate lead screw (314) can drive the driven lead screw (306) to rotate. The intermediate lead screw (314) passes through a rotation hole at the center of the turntable (305) and is threadedly connected to the inner end of the second runner forming shaft (203). The lower end of the first runner forming shaft (201) is rotatably connected to a first runner forming connection seat (208). A second runner forming connection seat (209) is fixedly connected to the lower side of the first runner forming connection seat (208). The outer diameters of the first runner forming connection seat (208) and the second runner forming connection seat (209) are the same. The second runner forming connection seat (209) is slidably connected inside the support base (102). The driven lead screw (306) is threadedly connected to one end of the second runner forming connection seat (209) away from the second runner forming shaft (203). A driving member is fixedly connected to the intermediate lead screw (314) near the turntable (305). A moving sleeve (308) is slidably connected to the driven lead screw (306). A driven member (311) capable of cooperating with the driving member is connected to the moving sleeve (308). A position adjustment driver (302) is fixedly connected to the second runner forming connection seat (209). An adjustment rod capable of making a reciprocating linear motion in the height direction is connected to the position adjustment driver (302). An adjustment plate (307) is fixedly connected to the adjustment rod. The moving sleeve (308) is rotatably connected to the adjustment plate (307).

2. The 3D printing platform according to claim 1, wherein: A limit sleeve (304) for restricting the axial movement of the driven lead screw (306) is connected to the driven lead screw (306) on the side of the turntable (305) away from the driven member (311). The limit sleeve (304) is attached to the side of the turntable (305) away from the driven member (311).

3. The 3D printing platform according to claim 1, characterized in that: The second runner forming connection seat (209) can also rotate along the inner edge of the support seat (102). A transmission sleeve (313) is connected to the active lead screw. The transmission sleeve (313) is close to the side of the active part away from the turntable (305). The adjusting plate (307) can just slide along the outer edge of the transmission sleeve (313). The outer edge of the transmission sleeve (313) is circular. A sliding sink (307a) is formed on one side of the adjusting plate (307) relative to the transmission sleeve (313). The adjusting plate (307) is slidably connected to a connection block (312) through the sliding sink (307a). A connection sink (313b) is formed on the outer circumference of the transmission sleeve (313). A limiting block (313a) is fixed on the transmission sleeve (313) at the connection sink (313b). One side of the connection block (312) away from the driven part (311) has a first inclined surface (312a), and one side of the connection block (312) relative to the driven part (311) has a second inclined surface (312b). One side of the limiting block (313a) relative to the active part has a third inclined surface. When the connection block (312) moves in the direction away from the active part and enters the connection sink (313b), the first inclined surface (312a) fits on the second inclined surface (312b), and the outer end of the connection block (312) extends beyond the outer edge of the transmission sleeve (313). An elastic member (303) is fixedly connected in the sliding sink (307a) of the adjusting plate (307). One end of the elastic member (303) away from the inner edge of the sliding sink (307a) is fixedly connected to the connection block (312); when the connection block (312) leaves the connection sink (313b), the elastic member (303) is in a compressed state; A plurality of sliding grooves (201a) corresponding to the runner forming members (204) one by one are arranged on the outer circumference of the first runner forming shaft (201). When the second runner forming connection seat (209) rotates, the runner forming members (204) slide along the corresponding sliding grooves (201a), and the outer ends of the runner forming members (204) can continuously extend out of the first runner forming shaft (201).

4. The 3D printing platform according to claim 3, wherein: A plurality of curved rotating grooves (208a) are arranged on the first runner forming connection seat (208). Limiting sink (208b) are formed on the first runner forming connection seat (208) on both sides of the rotating groove (208a). The runner forming member (204) includes a liquid storage runner forming part (204a) that can fit on the outer circumference of the first runner forming shaft (201). A flow through forming part (204b) that can just slide in the sliding groove (201a) is fixed on the liquid storage runner forming part (204a). The flow through forming part (204b) is away from the liquid storage runner forming part (204a) and is connected to a sliding block (210) that can just slide along the rotating groove (208a) at one end facing the first runner forming connection seat (208). A limiting sliding sleeve (211) is threadedly connected to the sliding block (210) in the limiting sink (208b).

5. The 3D printing platform according to claim 4, wherein: A rotating connection ring is fixed to the lower side of the first runner forming shaft (201). An annular rotating sunk groove is formed on the upward-facing side of the first runner forming connection seat (208). The first runner forming connection seat (208) is rotationally connected to the rotating connection ring through the rotating sunk groove. A limiting portion (204a-1) for restricting the rotation of the first runner forming shaft (201) is fixed to the lower side of the liquid storage runner forming portion (204a). When the lower side of the liquid storage runner forming portion (204a) is attached to the printing support platform (202) on the lower side of the printing sunk groove (202a), the limiting portion (204a-1) is within the connection through hole (202b).

6. The 3D printing platform according to any one of claims 1 to 5, characterized in that: A rotation-limiting rod that can perform reciprocating linear motion and is horizontally arranged is connected to the support seat (102) for restricting the rotation of the second runner forming connection seat (209). A non-circular moving groove is formed on the support seat (102). The rotation-limiting rod includes a moving portion that can just slide along the moving groove. A screw rod (207) is fixed to the outer side of the moving portion. The outer diameter of the screw rod (207) is smaller than the size of the moving groove. A rotating nut (206) is rotatably connected to the outer end of the support seat (102). The screw rod (207) is threadedly connected to the rotating nut (206).

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