WO2021022624A1 - 一种双喷头组件及其控制方法、3d打印机 - Google Patents

一种双喷头组件及其控制方法、3d打印机 Download PDF

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Publication number
WO2021022624A1
WO2021022624A1 PCT/CN2019/106034 CN2019106034W WO2021022624A1 WO 2021022624 A1 WO2021022624 A1 WO 2021022624A1 CN 2019106034 W CN2019106034 W CN 2019106034W WO 2021022624 A1 WO2021022624 A1 WO 2021022624A1
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WIPO (PCT)
Prior art keywords
nozzle
reversing
wire feeding
movable
component
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Application number
PCT/CN2019/106034
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English (en)
French (fr)
Inventor
李中秋
韩成超
秦少伍
张伟
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上海远铸智能技术有限公司
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Publication of WO2021022624A1 publication Critical patent/WO2021022624A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/205—Means for applying layers
    • B29C64/209—Heads; Nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/307—Handling of material to be used in additive manufacturing
    • B29C64/321—Feeding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/386—Data acquisition or data processing for additive manufacturing
    • B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y50/00—Data acquisition or data processing for additive manufacturing
    • B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

Definitions

  • the invention relates to the field of 3D printing, a dual nozzle assembly and a control method thereof, and a 3D printer.
  • 3D printer also known as three-dimensional printer, is a kind of cumulative manufacturing technology, that is, a kind of machine of rapid prototyping technology. It is based on a digital model file, using special wax materials, powdered metals or plastics and other bondable materials. Print layers of adhesive material to create three-dimensional objects.
  • the common type of dual nozzles is usually equal height dual nozzles.
  • the installation height of the dual nozzles in the Z direction is the same. There is no relative movement in the Z direction when the dual nozzles are switched during use; but during use When the A nozzle is used for printing, since the B nozzle and the A nozzle are at the same height, the B nozzle is easy to scratch the model, which affects the quality of 3D printing, and even causes the printing to fail, and the reliability of the printing action is low.
  • the purpose of the present invention is to provide a dual nozzle assembly and its control method, 3D printer, which reduces the possibility of another nozzle scratching the model, reduces the influence of the nozzle on the printing process, increases the quality of 3D printing, and increases the printing Reliability of actions.
  • a dual nozzle assembly includes: a nozzle substrate on which a fixed nozzle and a movable nozzle are arranged; along the length of the movable nozzle, the position of the movable nozzle on the nozzle substrate is adjustable
  • the wire feed assembly is arranged on the substrate of the nozzle, and the wire feed assembly is used to control the feeding of the wire in the fixed nozzle or the movable nozzle.
  • a spring is provided on the movable spray head, and one end of the spring away from the movable spray head is provided on the spray head substrate, and the spring is used to drive the movable spray head to approach the spray head substrate;
  • a reversing column is provided on the movable nozzle, and the end of the reversing column away from the movable nozzle extends to the side close to the nozzle substrate; the nozzle substrate is also provided with a reversing column for pressing the reversing column To the block.
  • the user can realize the position adjustment of the movable nozzle by controlling the pressing state of the reversing block, and the adjustment of the position of the movable nozzle is more convenient.
  • a sliding drive assembly is further provided on the nozzle base plate, the sliding direction of the sliding drive assembly is perpendicular to the axial direction of the reversing column, and the reversing block is arranged on the sliding drive assembly; Along the sliding direction of the sliding drive assembly, the distance between one end of the reversing block and the movable nozzle is greater than the distance between the other end of the reversing block and the movable nozzle.
  • the arrangement of the sliding drive assembly facilitates the user to stably press the reversing column, which increases the reliability when the reversing column is pressed.
  • the sliding limit assembly includes a guide rail and a sliding block, the guide rail and the sliding block are respectively arranged on the fixed spray head and the movable spray head; the length direction of the guide rail Parallel to the sliding direction of the sliding drive assembly; the sliding block is slidingly connected to the guide rail along the length direction of the guide rail.
  • the reversing column is further provided with a reversing head for abutting the reversing block, and the reversing head is screwed to the reversing column.
  • the reversing head after the user rotates the reversing head on the reversing column, the reversing head can be moved up or down, and the distance between the reversing block and the reversing block is adjusted. Then, after the reversing block is pressed, the movable nozzle The lowest position increases the scope of application of the dual nozzle assembly.
  • a guide post is provided on the movable shower head, one end of the guide post is fixedly connected to the movable shower head, and the other end of the guide post is embedded in the shower head substrate; in the shower head substrate A guide groove for embedding the guide post is provided, and the guide post and the guide groove are transitionally matched.
  • the arrangement of the guide post and the guide groove increases the restriction between the nozzle base plate and the movable nozzle, reduces the possibility of the movable nozzle shaking during the sliding process, and increases the time when the movable nozzle slides.
  • the nozzle base plate is provided with a throat for inserting the wire; the nozzle base plate is provided with a passive wire feeding wheel for abutting against the wire; the wire feeding assembly includes: a wire feeding motor , The wire feeding motor is arranged on the substrate of the nozzle; an active wire feeding wheel is arranged at the output end of the wire feeding motor; the active wire feeding wheel and the passive wire feeding wheel are distributed On both sides of the wire, the gap between the active wire feeding wheel and the passive wire feeding wheel is smaller than the diameter of the throat.
  • the feeding of the wire is realized through the arrangement of the matched active wire feeding wheel and the passive wire feeding wheel, and the control action of the wire feeding is more convenient.
  • a driven feedback component is provided on the passive wire feed wheel, and the driven feedback component is coaxially connected to the passive wire feed wheel, and the driven feedback component is used for sensing the rotation of the passive wire feed wheel speed.
  • a sliding assembly is provided on the nozzle base plate, and the sliding assembly includes a connecting rail, one end of the connecting rail is close to the fixed nozzle, and the other end of the connecting rail is close to the movable nozzle; Block, the sliding block is arranged on the connecting rail and sliding along the length direction of the connecting rail; the wire feeding component is arranged on the sliding block and sliding following the sliding block.
  • the wire feeding assembly can feed the wire material to the fixed nozzle and the movable nozzle separately, that is, a single wire feeding assembly can be fixed correspondingly
  • the nozzles and movable nozzles reduce the need for the wire feed assembly, thereby reducing the quality of the dual nozzle assembly, and increasing the reliability of the dual nozzle assembly during printing.
  • a commutation assembly is provided on the nozzle base plate, and the commutation assembly includes: a rack, the rack is arranged on the slider; a commutation motor, the commutation motor is arranged on the nozzle base plate On; reversing gear, the reversing gear is provided at the output end of the reversing motor, and is meshed with the rack to drive the rack to slide along the length of the connecting rail.
  • the position of the wire feed assembly can be adjusted through the setting of the reversing assembly, and the adjustment of the position of the wire feed assembly is more convenient.
  • a position sensing component for sensing the rack and/or the slider is also provided on the nozzle substrate.
  • the position sensing component is arranged to facilitate the user to know that the wire feeding component has reached a specific position, and it is convenient for the wire feeding component to start the wire feeding.
  • a cooling pipe is provided in the nozzle base plate, one end of the cooling pipe is provided with a liquid inlet joint, and the other end of the cooling pipe is provided with a liquid outlet joint.
  • the cooling liquid can enter the cooling pipe from the liquid inlet joint, and then cool the nozzle substrate, and then flow out from the liquid outlet joint.
  • the cooling process of the nozzle substrate is simpler and the structure of the cooling device is simpler.
  • One of the objectives of the present invention is also to provide a method for controlling a dual nozzle assembly, including: when the controller parses the user's control signal, the controller sends a corresponding commutation signal to the commutation assembly according to the control signal; The reversing component controls the wire feeding component to approach the fixed nozzle or the movable nozzle according to the received reversing signal; when the position sensing component senses the wire feeding component, the controller controls the wire feeding component to move toward the The wire is fed into the fixed nozzle or the movable nozzle.
  • the step that the reversing component controls the wire feeding component to approach the fixed nozzle or the movable nozzle according to the received reversing signal specifically includes: when the reversing component receives the first reversing signal, the controller controls the feed The wire assembly slides in a first preset direction, the wire feeding assembly approaches the movable nozzle; the reversing block presses the reversing column; the movable nozzle moves away from the nozzle substrate; the reversing assembly receives the first When the second reversing signal occurs, the controller controls the wire feed assembly to slide in a second preset direction and approach the fixed nozzle.
  • the controller controls the wire feeding component to slide in a second preset direction, and after approaching the fixed nozzle, the method further includes: the reversing block is released and changed. To the column; the movable nozzle moves towards the direction close to the substrate of the nozzle.
  • the method further includes: obtaining passive feedback from the feedback component.
  • the rotation speed of the feed wheel and send the rotation speed to the controller; when the controller analyzes that the rotation speed is not within the first preset range, the controller according to the control signal and The rotation speed sends a corresponding adjustment signal to the reversing assembly; the reversing assembly controls the wire feed assembly to approach or move away from the fixed nozzle according to the received adjustment signal.
  • One of the objectives of the present invention is also to provide a 3D printer including a printer body on which a dual nozzle assembly is installed.
  • the dual nozzle assembly and its control method, and the 3D printer provided by the present invention have the following beneficial effects:
  • the fixed nozzle or the movable nozzle at the lower end can form a gap between the other nozzle and the printing model during the printing process, which reduces the gap between the other nozzle and the printing model.
  • the possibility of contact with the model reduces the possibility of another print head scratching the model, reduces the impact of the print head on the printing process, increases the quality of 3D printing, and increases the reliability of the printing action.
  • the user can realize the position adjustment of the movable nozzle by controlling the pressing state of the reversing block, and the adjustment of the position of the movable nozzle is more convenient.
  • the reversing head can be moved up or down, adjusting the distance between the reversing block and the reversing block, and then the lowest position of the movable nozzle is realized after the reversing block is pressed. , Increase the scope of application of dual nozzle components.
  • the wire feeding component can feed the wire material to the fixed nozzle and the movable nozzle separately, that is, a single wire feeding component can correspond to the fixed nozzle and the movable nozzle.
  • the moving nozzle reduces the need for the wire feed assembly, and then reduces the quality of the dual nozzle assembly, and increases the reliability of the dual nozzle assembly during printing.
  • the cooling liquid can enter the cooling pipe from the liquid inlet joint, and then cool the nozzle base plate, and then flow out from the liquid outlet joint.
  • the cooling process of the nozzle base plate is relatively simple, and the structure of the cooling equipment is relatively simple;
  • the distance between the wire feeding assembly and the fixed nozzle or movable nozzle can be adjusted, so that wires of different diameters can be fed, which greatly improves the printer's compatibility with different wire diameters.
  • Figure 1 is a schematic view of the structure of a dual nozzle assembly of the present invention
  • Figure 2 is a rear view of another dual nozzle assembly of the present invention.
  • Figure 3 is a cross-sectional view taken along the line A-A of Figure 2;
  • Figure 4 is an enlarged view of B in Figure 3;
  • Fig. 5 is a cross-sectional view taken along the line C-C in Fig. 2.
  • a dual nozzle assembly includes:
  • the shower head substrate 10, the shower head substrate 10 can be arranged vertically, the shower head substrate 10 is provided with a fixed shower head 20 and a movable shower head 30.
  • the fixed shower head 20 and the movable shower head 30 are both arranged on the lower side of the shower head substrate 10.
  • the fixed spray head 20 and the movable spray head 30 are arranged side by side.
  • the position of the movable spray head 30 on the spray head substrate 10 is adjustable, that is, the movable spray head 30 can be adjusted up and down on the spray head substrate 10, thereby realizing the movable spray head 30 The change in height in the vertical direction.
  • the wire feeding component 40 is arranged on the nozzle base plate 10, and the wire feeding component 40 is used to control the wire (not shown in the figure) to feed in the fixed nozzle 20 or the movable nozzle 30, that is, the wire feeding component 40 can be directed to the fixed nozzle
  • the wire is fed within 20 or into the movable nozzle 30, and the wire can be ejected from the fixed nozzle 20 or from the movable nozzle 30, realizing the effect of 3D printing.
  • the movable nozzle 30 when the movable nozzle 30 is adjusted to the lowest end, the lower end of the movable nozzle 30 is lower than the lower end of the fixed nozzle 20, and the wire feed assembly 40 can be moved into the movable nozzle 30.
  • the movable nozzle 30 at the lower end can start 3D printing; when the movable nozzle 30 is adjusted to the uppermost end, the lower end of the movable nozzle 30 is higher than the lower end of the height nozzle, and the thread feeding assembly 40 can advance into the fixed nozzle 20 Silk, the fixed nozzle 20 at the lower end can start 3D printing.
  • the fixed nozzle 20 or the movable nozzle 30 at the lower end can form a gap between the other nozzle and the printing model during the printing process, which reduces
  • the possibility of another print head contacting the printed model reduces the possibility of another print head scratching the model, reduces the impact of the print head on the printing process, increases the quality of 3D printing, and increases the reliability of the printing action.
  • a cooling pipe (not shown in the figure) is provided in the nozzle substrate 10, one end of the cooling pipe is provided with a liquid inlet connector 11, and the other end of the cooling pipe is provided with a liquid connector 12; in this embodiment, the cooling liquid can be The liquid inlet connector 11 enters the cooling pipe, and then cools the nozzle substrate 10, and then flows out from the liquid outlet connector 12.
  • the cooling process of the nozzle substrate 10 is relatively simple, and the structure of the cooling device is relatively simple.
  • the number of cooling pipes can be set to one or more to increase the cooling efficiency of the nozzle substrate 10; the position of the inlet connector 11 is higher than the position of the outlet connector 12, therefore, the cooling liquid can be affected by gravity. Or the position of the connection joint 11 is lower than the position of the outlet joint 12, the coolant can enter the inlet joint 11, and then spray out from the outlet joint 12; specifically, in this embodiment
  • the cooling pipe can be vertically opened in the cooling substrate, which increases the structural strength of the cooling substrate and reduces the possibility of damage to the cooling substrate.
  • the cooling pipes are arranged at the left and right ends of the shower head substrate 10.
  • FIGS. 2 to 4 a dual nozzle assembly.
  • the difference between this embodiment and the first embodiment lies in the arrangement of the reversing column 32 and the reversing block 13.
  • the movable spray head 30 is provided with a spring 31, and the end of the spring 31 away from the movable spray head 30 is provided on the spray head substrate 10. Since the movable spray head 30 is provided on the spray head substrate 10 Therefore, the upper end of the spring 31 can be connected to the nozzle substrate 10, and the lower end of the spring 31 can be connected to the movable nozzle 30.
  • the spring 31 is used to drive the movable nozzle 30 close to the nozzle substrate 10, and the spring 31 can pull the nozzle upward.
  • the movable spray head 30 is provided with a reversing column 32, and the end of the reversing column 32 away from the movable spray head 30 extends toward the side close to the spray head substrate 10. Specifically, the reversing column 32 can extend upward to the position of the spray head substrate 10 .
  • the nozzle base plate 10 is also provided with a reversing block 13 for pressing the reversing column 32, that is, the user can control the state of the reversing column 32 through the reversing block 13.
  • the movable nozzle 30 can be at the upper end under the action of the spring 31.
  • the reversing block 13 presses the reversing column 32, the reversing block 13 can overcome the elastic force of the spring 31 and press the movable nozzle 30 downward, and the movable nozzle 30 can be at The lower end realizes the adjustment of the position of the movable nozzle 30.
  • the user can realize the position adjustment of the movable nozzle 30 by controlling the pressing state of the reversing block 13, and the position of the movable nozzle 30 can be adjusted.
  • the action is more convenient.
  • the reversing column 32 is detachably connected to the movable spray head 30, and the reversing column 32 can be connected to the movable spray head 30 through the connecting bolt 35, so that the user can easily remove the reversing column 32 from the movable spray head. Remove on 30.
  • the nozzle base plate 10 is also provided with a sliding drive assembly, and the sliding direction of the sliding drive assembly is perpendicular to the axis direction of the reversing column 32, that is, the sliding drive assembly can slide horizontally on the nozzle base plate 10, and change direction.
  • the block 13 is provided in the sliding drive assembly, so the reversing block 13 can follow the sliding drive assembly to slide.
  • the distance between one end of the reversing block 13 and the movable nozzle 30 is greater than the distance between the other end of the reversing block 13 and the movable nozzle 30, that is, the left and right sides of the reversing block 13
  • the distance between the ends is different; the sliding drive assembly can drive the reversing block 13 to slide during the sliding process, and the distance between the upper end of the reversing column 32 and the reversing block 13 can be continuously increased or decreased.
  • the front and rear heights of the reversing block 13 are different. Therefore, when the reversing block 13 slides back and forth, the distance between the reversing block 13 and the reversing column 32 can be continuously changed.
  • the sliding limit component includes a guide rail 91 and a slider 92, the guide rail 91 and the slider 92 respectively It is installed on the fixed spray head 20 and the movable spray head 30.
  • the guide rail 91 is provided on the fixed spray head 20 and the slider 92 is provided on the movable spray head 30, or the slider 92 is provided on the fixed spray head 20, and the guide rail 91 Set on the movable spray head 30; the slider 92 can also be connected to the movable spray head 30 or the fixed spray head 20 through the adapter 93.
  • the length direction of the guide rail 91 is parallel to the sliding direction of the sliding drive assembly, that is, the guide rail 91 can be vertically arranged on the fixed spray head 20 or the movable spray head 30; the slider 92 is slidingly connected to the guide rail 91 along the length direction of the guide rail, namely The sliding block 92 can move up and down on the guide rail 91; therefore, when the sliding drive assembly drives the movable nozzle to move up and down, the sliding limit assembly combined with the fixed nozzle 20 can limit the movable nozzle 30.
  • the restriction of the movable spray head 30 during sliding is increased, the possibility of the movable spray head 30 shaking during the sliding movement is reduced, and the movement of the movable spray head 30 is increased. Stability during slippage.
  • the reversing column 32 is also provided with a reversing head 33 for the reversing block 13 to abut.
  • the reversing head 33 is screwed to the reversing column 32; after the user rotates the reversing head 33 on the reversing column 32, the reversing head 33 can move up or down, adjust the distance between the reversing block 13 and then realize the lowest position of the movable spray head 30 after the reversing block 13 is pressed, which increases the scope of application of the dual spray head assembly.
  • the movable shower head 30 is provided with a guide post 34, one end of the guide post 34 is fixedly connected to the movable shower head 30, and the other end of the guide post 34 is embedded in the shower head substrate 10 .
  • the nozzle base plate 10 is provided with a guide groove 14 for embedding the guide post 34, and the guide post 34 and the guide groove 14 are transitionally matched.
  • the arrangement of the guide post 34 and the guide groove 14 increases the restriction between the nozzle substrate 10 and the movable nozzle 30, reduces the possibility of the movable nozzle 30 shaking during the sliding process, and increases the The stability of the movable spray head 30 when sliding; and through the provision of transitional fit, the possibility of the movable spray head 30 jumping during the sliding movement is further reduced, and the reliability of the movable spray head 30 when sliding is increased.
  • a dual nozzle assembly As shown in FIG. 5, a dual nozzle assembly.
  • the difference between this embodiment and the first embodiment lies in the specific structure of the wire feed assembly 40.
  • the nozzle base plate 10 is provided with a throat 15 for wire insertion, and the wire can be inserted into the throat 15 from the upper end to enter the fixed nozzle 20 or the movable nozzle 30 Inside; the nozzle base plate 10 is provided with a passive wire feeding wheel 16 for abutting on the wire, that is, the wire inserted into the throat 15 can abut on the passive wire feeding wheel 16.
  • the wire feed assembly 40 includes:
  • the wire feeding motor 41 is arranged on the nozzle base plate 10. In this embodiment, the axis of the wire feeding motor 41 is horizontally arranged.
  • the active wire feeding wheel 42 is arranged at the output end of the wire feeding motor 41, and the rotation of the wire feeding motor 41 can drive the active wire feeding wheel 42 to rotate; preferably, the active wire feeding wheel 42 and the passive wire feeding wheel 16 All gears are selected, and the active wire feeding wheel 42 meshes with the passive wire feeding wheel 16.
  • the active wire feeding wheel 42 and the passive wire feeding wheel 16 are distributed on both sides of the wire.
  • the gap between the active wire feeding wheel 42 and the passive wire feeding wheel 16 is smaller than the diameter of the throat 15 and the wire inserted into the throat 15 can be Clamped between the active wire feeding wheel 42 and the passive wire feeding wheel 16.
  • the active wire feeding wheel 42 can follow the wire feeding motor 41 to rotate, and clamped between the active wire feeding wheel 42 and the passive wire feeding wheel
  • the wire between 16 will start to feed, and the passive wire feeding wheel 16 will rotate synchronously.
  • the feeding of the wire is realized by the arrangement of the matched active wire feeding wheel 42 and the passive wire feeding wheel 16, and the control action of the wire feeding is more convenient.
  • a controller (not shown in the figure) is also provided.
  • the controller mainly refers to components with calculation and control functions such as a computer, PLC, or single-chip microcomputer.
  • the wire feeding motor 41 can be connected to the controller and received Controlled by the controller.
  • the passive feed wheel 16 is provided with a driven feedback assembly 50, which is coaxially connected to the passive feed wheel 16, and the driven feedback assembly 50 is used to sense the rotation speed of the passive feed wheel 16;
  • the driven feedback component 50 through the setting of the driven feedback component 50, it is convenient for the user to know the current feeding speed of the wire, and it is convenient for the user to control the feeding of the wire.
  • the driven feedback assembly 50 includes magnetic parts arranged on the passive wire feeding wheel 16.
  • the magnetic parts can generate an alternating magnetic field through the rotation of the passive wire feeding wheel 16, and then by setting a rotation sensor By detecting the alternating magnetic field, the rotation speed of the passive wire feeding wheel 16 can be obtained; or the driven feedback component 50 can also be an encoder directly arranged on the passive wire feeding wheel 16, and the encoder can follow the passive wire feeding wheel 16 It rotates, and sends an electric signal to the controller, and then obtains the rotation speed of the passive wire feeding wheel 16.
  • FIG. 1 a dual nozzle assembly.
  • the difference between this embodiment and the first embodiment lies in the arrangement of the sliding assembly.
  • a sliding component is provided on the nozzle base plate 10, and the sliding component includes:
  • Connecting rail 61 one end of the connecting rail 61 is close to the fixed nozzle 20, and the other end of the connecting rail 61 is close to the movable nozzle 30. Since the fixed nozzle 20 and the movable nozzle 30 are arranged side by side, the connecting rail 61 can be horizontally arranged on the nozzle substrate 10. on.
  • the slider 62, the slider 62 can be arranged on the connecting rail 61 and slide along the length direction of the connecting rail 61, that is, the slider 62 can slide left and right.
  • the wire feeding assembly 40 is arranged on the slider 62 and slides following the slider 62.
  • the wire feeding assembly 40 can feed both the fixed nozzle 20 and the movable nozzle 30 separately, that is, a single wire feeding assembly. 40 can correspond to the fixed nozzle 20 and the movable nozzle 30, which reduces the need for the wire feed assembly 40, thereby reducing the quality of the dual nozzle assembly and increasing the reliability of the dual nozzle assembly during printing.
  • the sliding assembly can act as a sliding drive assembly to drive the reversing block 13 to slide, and then the reversing block 13 is pressed and released.
  • a reversing component is provided on the nozzle substrate 10, and the reversing component includes:
  • the rack 71 can be horizontally arranged on the slider 62.
  • the commutation motor 72, the commutation motor 72 can be arranged on the nozzle base plate 10, and the axis of the commutation motor 72 is arranged horizontally.
  • the reversing gear 73 and the reversing gear 73 are arranged at the output end of the reversing motor 72 and meshed with the rack 71 to drive the rack 71 to slide along the length of the connecting rail 61; that is, when the reversing gear 73 rotates, It can drive the rack 71 to slide, and then drive the slider 62 to slide, and finally realize the sliding of the wire feeding assembly 40, and the wire feeding assembly 40 can be slid to one end of the movable nozzle 30 or one end of the fixed nozzle 20.
  • the adjustment of the position of the wire feeding assembly 40 can be realized by the setting of the reversing assembly, and the adjustment of the position of the wire feeding assembly 40 is more convenient.
  • the nozzle substrate 10 is further provided with a position sensing component 80 for sensing the rack 71 and/or the slider 62, that is, when the rack 71 drives the thread feeding component 40 to slide left and right, the position sensing component 80 can sense the rack 71 And/or the slider 62, and serve as the basis for whether the wire feed assembly 40 is close to the fixed nozzle or the movable nozzle; in this embodiment, the position sensing assembly 80 can be arranged in pairs, and one of the position sensing assemblies 80 arranged in pairs The position sensing component 80 can be arranged at the end close to the fixed spray head 20, and the other position sensing component 80 can be arranged at the end close to the movable spray head assembly 30; the position sensing component 80 can be selected as an induction device such as a micro switch or a proximity sensor; In this embodiment, by setting the position sensing component 80, it is convenient for the user to know that the thread feeding component 40 has reached a specific position, and it is convenient for the thread feeding component 40 to start the thread feeding.
  • a method for controlling a dual nozzle assembly includes:
  • the controller parses the user's control signal, the controller sends a corresponding commutation signal to the commutation component according to the control signal.
  • the controller can be connected to the user's control box, and the user can control the start, stop and reversal of the dual nozzle assembly through the control box; the user can first power on the dual nozzle assembly through the control box, and then select the desired nozzle, that is, fixed nozzle or can Moving the sprinkler, when the user selects, the controller can parse the user's control signal, and form a commutation signal for the control signal, and send the commutation signal to the commutation component.
  • the reversing component controls the wire feeding component to approach the fixed nozzle or the movable nozzle according to the received reversing signal.
  • the commutation motor 72 can rotate forward or reverse. During the rotation of the commutation motor 72, the commutation motor 72 can drive the rack 71 to slide. Then, the slider 62 is driven to slide, and the wire feeding assembly 40 is driven to slide left and right, that is, the wire feeding assembly 40 is close to the fixed nozzle 20 or the movable nozzle 30.
  • the controller controls the wire feeding component 40 to feed the wire into the fixed nozzle 20 or the movable nozzle 30.
  • the controller can know the wire feeding component 40 and the slip To the end close to the fixed nozzle 20, or the end that has slipped to the movable nozzle 30, the controller can then control the filament feed assembly 40 to work, and the filament feed assembly 40 can be directed to the fixed nozzle 20 or the movable nozzle 30 through the throat 15 Feed wire inside.
  • the controller can control the wire feed assembly 40 to slide to different positions, so that the wire feed assembly 40 can separately feed the fixed nozzle 20 or the movable nozzle 30. ; It only needs to set a single wire feed assembly 40 to realize the wire feeding to the fixed nozzle 20 or the movable nozzle 30, which reduces the total mass of the dual nozzle assembly and increases the reliability of the dual nozzle assembly printing.
  • step S3 the method further includes:
  • the driven feedback component obtains the rotation speed of the passive wire feed wheel, and sends the rotation speed to the controller; that is, the encoder or the rotation sensor can obtain the rotation speed of the passive wire feed wheel and change the rotation speed Send to the controller.
  • the controller analyzes that the rotation speed is not within the first preset range, the controller sends a corresponding adjustment signal to the reversing component according to the control signal and the rotation speed.
  • the user can preset the first preset range in the controller before starting the dual nozzle assembly, that is, the transmission speed of the wire.
  • the controller analyzes whether the rotation speed is within the first preset Within the range, you can know whether the wire feeding speed of the wire meets the requirement, and then judge whether the position of the active wire feeding wheel 42 meets the requirement.
  • the controller can directly increase or decrease the speed of the active wire feed wheel 42 to change the wire feed speed, and can also send an adjustment signal to the reversing assembly to adjust the difference between the active wire feed wheel 42 and the passive wire feed wheel 16. The spacing between.
  • the reversing assembly controls the wire feeding assembly to approach or move away from the fixed nozzle; when the reversing assembly receives the adjustment signal, the wire feeding assembly can be fine-tuned left and right, realizing the active wire feeding wheel 42 and passive The adjustment of the spacing between the wire feeding wheels 16 then realizes the frictional force received when the wire is fed, and realizes the adjustment of the wire feeding speed.
  • the controller parses the user's control signal, the controller sends a corresponding commutation signal to the commutation component according to the control signal.
  • the controller controls the wire feeding assembly 40 to slide in a first preset direction, and the wire feeding assembly 40 is close to the movable nozzle 30.
  • the reversing block 13 presses the reversing column 32.
  • the movable shower head 30 moves in a direction away from the shower head substrate 10.
  • the controller can control the wire feeding assembly 40 to slide in the direction of the movable nozzle 30.
  • the reversing block 13 is set at the drive wire feeding assembly 40. Therefore, the reversing block 13 can also follow the sliding assembly to slide.
  • the reversing block 13 can move downward and press the reversing column 32 downward; the movable nozzle 30 can move the nozzle substrate 10,
  • the movable spray head 30 can be located on the lower side of the fixed spray head 20 until the wire feeding assembly 40 slides to be sensed by the position sensing assembly 80.
  • the controller controls the wire feeding component 40 to slide in a second preset direction and approach the fixed nozzle 20.
  • the controller can control the thread feeding component 40 to slide in the direction of the fixed nozzle 20 until the thread feeding component 40 slides to be sensed by the position sensing component 80.
  • the reversing block 13 releases the reversing pole 32.
  • the movable spray head 30 moves in a direction close to the spray head substrate 10.
  • the controller can control the wire feeding assembly 40 to slide in the direction of the fixed nozzle 20.
  • the reversing block 13 can move downward, the reversing column 32 is released, the movable spray head 30 is reset, and is at the upper end of the fixed spray head 20.
  • the controller controls the wire feeding component 40 to feed the wire into the fixed nozzle 20 or the movable nozzle 30.
  • the user can first power on the dual nozzle assembly through the control box, and then select the desired nozzle, that is, the fixed nozzle 20 or the movable nozzle 30.
  • the controller can Analyze the user's control signal and form a commutation signal for the control signal, and send the commutation signal to the commutation component, that is, the controller can send the first commutation signal or the second commutation signal to the commutation component.
  • the reversing motor 72 controls its output end to rotate clockwise, the reversing gear 73 connected to the output end of the reversing motor 72 also rotates clockwise, and the reversing gear 73 meshes
  • the rack 71 can move to the left, that is, move in a direction close to the movable shower head 30.
  • the rack 71 can drive the slider 62 on its lower side to slide to the left, and since the reversing block 13 can be arranged on the slider 62, the reversing block 13 can also Following the sliding of the slider 62 to the left, during the sliding of the reversing block 13 to the left, the distance between the reversing block 13 and the lower reversing column 32 or the reversing head 33 gradually decreases until The reversing block 13 abuts on the reversing head 33, and the reversing block 13 can continue to slide to the left. Therefore, the reversing block 13 can also continuously press the reversing head 33 downward, and then overcome the elastic force of the spring 31 to drive The movable spray head 30 moves downward.
  • the end position sensing assembly 80 can sense the rack 71 or the slider 62, which indicates that the wire feed assembly 40 has moved to the end close to the movable nozzle 30.
  • the feed wheel 42 can approach the passive feed wheel 16, and the gap between the active feed wheel 42 and the passive feed wheel 16 is already smaller than the diameter of the throat pipe 15.
  • the wire can be clamped between the active wire feeding wheel 42 and the passive wire feeding wheel 16.
  • the controller can control the work of the wire feeding assembly 40. Since the wire material is clamped between the active wire feeding wheel 42 and the passive wire feeding wheel 16, after the active wire feeding wheel 42 rotates, the active wire feeding wheel 42 and the wire There is friction between the materials, so the wire can be fed downward, and because there is also friction between the wire and the passive wire feeding wheel 16, the passive wire feeding wheel 16 can also follow to rotate, and the wire is fed passively
  • the rotation speed of the wheel 16 is the same as the rotation speed of the active wire feeding wheel 42.
  • the driven feedback component 50 can obtain the rotation speed of the passive wire feeding wheel 16 and send the rotation speed to the controller.
  • the controller can obtain the current wire feeding speed and perform analysis.
  • the controller When the controller analyzes that the feed speed of the wire is continuously lower or higher than the preset speed, that is, the current feed of the wire continues to be lower or higher than the preset feed. Therefore, there may be There is the possibility of underfeed, wire jam or overfeed, the controller can control its alarm device to give an alarm to remind the operator to troubleshoot.
  • control analyzes that the wire feeding speed is too large or too small, it can also realize the change of the wire feeding speed by controlling the rotation speed of the active wire feeding wheel 42.
  • the user can select the fixed spray head 20 by operating the control box, the reversing assembly can receive the second reversing signal, and the control motor can control the output end of the reverse pointer to rotate, connected to the reversing
  • the reversing gear 73 at the output end of the motor 72 also rotates counterclockwise, and the rack 71 meshing with the reversing gear 73 can move to the right, that is, move toward the direction of the fixed nozzle 20.
  • the rack 71 can drive the slider 62 on its lower side to slide to the right, and since the reversing block 13 can be arranged on the slider 62, the reversing block 13 can also Following the sliding of the slider 62 to the right, during the sliding process of the reversing block 13 to the right, the reversing block 13 can gradually lift upwards, the spring 31 can gradually restore elastic deformation, and the movable nozzle 30 can move upwards until When the reversing block 13 is separated from the reversing head 33, the movable spray head 30 can be located on the upper side of the fixed spray head 20, and the movable spray head 30 can be reset.
  • the position sensing component 80 of the end can sense the rack 71 or the slider 62, and thereby indicate that the wire feed assembly 40 has moved close to the fixed nozzle 20
  • the active wire feeding wheel 42 can approach the passive wire feeding wheel 16, and the gap between the active wire feeding wheel 42 and the passive wire feeding wheel 16 is already smaller than the diameter of the throat tube 15.
  • the wire can be clamped between the active wire feeding wheel 42 and the passive wire feeding wheel 16.
  • the wire feeding assembly 40 can again control the wire feeding downward from the throat 15.
  • a 3D printer is provided with a dual nozzle assembly described in any of the above embodiments on the printer body.

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Abstract

本发明公开了一种双喷头组件及其控制方法、3D打印机，涉及3D打印领域。本发明包括：喷头基板，所述喷头基板上设有固定喷头和可动喷头；沿所述可动喷头的长度方向，所述可动喷头在所述喷头基板上的位置可调；进丝组件，设置于所述喷头基板上，所述进丝组件用于控制丝材在所述固定喷头或可动喷头内进给。本发明减小了另一喷头剐蹭模型的可能，减小了喷头对打印过程的影响，提高了3D打印的质量，提高了打印动作的可靠性。

Description

一种双喷头组件及其控制方法、3D打印机 技术领域
本发明涉及3D打印领域，一种双喷头组件及其控制方法、3D打印机。
背景技术
3D打印机又称三维打印机，是一种累积制造技术，即快速成形技术的一种机器，它是一种数字模型文件为基础，运用特殊蜡材、粉末状金属或塑料等可粘合材料，通过打印一层层的粘合材料来制造三维的物体。
现有使用双喷头的3D打印机中，常见的双喷头类型通常为等高度双喷头，双喷头在Z向的安装高度相同，双喷头在使用过程中切换时Z向无相对运动；但在使用过程中使用其中A喷头进行打印时，由于B喷头与A喷头处于同一高度，因此B喷头容易剐蹭模型，从而影响3D打印的质量，甚至导致打印失败，打印动作的可靠性较低。
发明内容
本发明的目的是提供一种双喷头组件及其控制方法、3D打印机，减小了另一喷头剐蹭模型的可能，减小了喷头对打印过程的影响，增加了3D打印的质量，增加了打印动作的可靠性。
本发明提供的技术方案如下：
一种双喷头组件，包括：喷头基板，所述喷头基板上设有固定喷头和可动喷头；沿所述可动喷头的长度方向，所述可动喷头在所述喷头基板上的位置可调；进丝组件，设置于所述喷头基板上，所述进丝组件用于控制丝材在所述固定喷头或可动喷头内进给。
本技术方案中，通过设置可动喷头，实现了在下端的固定喷头或可动喷头 在打印过程中，另一喷头与打印模型之间能够形成间隙，继而减小了另一喷头剐蹭模型的可能，提高了3D打印的质量，提高了打印动作的可靠性。
进一步，所述可动喷头上设有弹簧，所述弹簧远离所述可动喷头的一端设置于所述喷头基板，所述弹簧用于驱动所述可动喷头靠近所述喷头基板；所述可动喷头上设有换向柱，所述换向柱远离所述可动喷头的一端向靠近所述喷头基板的一侧延伸；所述喷头基板上还设有用于按压所述换向柱的换向块。
本技术方案中，通过换向块、换向柱以及弹簧的设置，用户通过控制换向块的按压状态，即可实现可动喷头的位置调节，可动喷头位置调节的动作较为方便。
进一步，所述喷头基板上还设有滑移驱动组件，所述滑移驱动组件的滑移方向垂直于所述换向柱的轴线方向，所述换向块设置于所述滑移驱动组件；沿所述滑移驱动组件的滑移方向，所述换向块的一端与所述可动喷头之间的间距大于所述换向块的另一端与所述可动喷头之间的间距。
本技术方案中，通过滑移驱动组件的设置，便于用户稳定地按压换向柱，增加了换向柱按压时的可靠性。
进一步，还包括滑移限位组件，所述滑移限位组件包括导轨和滑块，所述导轨和滑块分别设置于所述固定喷头和所述可动喷头上；所述导轨的长度方向平行于所述滑移驱动组件的滑移方向；所述滑块沿所述导轨的长度方向滑移连接于所述导轨。
本技术方案中，通过滑移限位组件的设置，增加了可动喷头在滑移时受到的约束，减小了可动喷头在滑移时晃动的可能，增加了可动喷头在滑移时的稳定性。
进一步，所述换向柱上还设有用于所述换向块抵接的换向头，所述换向头螺纹连接于所述换向柱。
本技术方案中，用户旋转换向柱上的换向头之后，换向头能够上移或下移， 调节了与换向块之间的间距，继而实现了换向块按压后，可动喷头的最低位置，增加了双喷头组件的适用范围。
进一步，所述可动喷头上设有导向柱，所述导向柱的一端固定连接于所述可动喷头上，所述导向柱的另一端嵌设于所述喷头基板内；所述喷头基板内开设有用于所述导向柱嵌设的导向槽，所述导向柱与所述导向槽过渡配合。
本技术方案中，通过导向柱与导向槽的设置，增加了喷头基板与可动喷头之间的约束，减小了可动喷头在滑移过程中晃动的可能，增加了可动喷头滑移时的稳定性；且通过过渡配合的设置，进一步减小了可动喷头在滑移时跳动的可能，增加了可动喷头滑移时的可靠性。
进一步，所述喷头基板内设有用于所述丝材插入的喉管；所述喷头基板内设有用于抵接于所述丝材的被动进丝轮；所述进丝组件包括：进丝电机，所述进丝电机设置在所述喷头基板上；主动进丝轮，所述主动进丝轮设置于所述进丝电机的输出端；所述主动进丝轮与所述被动进丝轮分布于所述丝材的两侧，所述主动进丝轮与所述被动进丝轮之间的间隙小于所述喉管的直径。
本技术方案中，通过配合的主动进丝轮与被动进丝轮的设置，实现了丝材的进给，丝材进给的控制动作较为方便。
进一步，所述被动进丝轮上设有从动反馈组件，所述从动反馈组件同轴连接于所述被动进丝轮，所述从动反馈组件用于感应所述被动进丝轮的旋转速度。
本技术方案中，通过从动反馈组件的设置，便于用户得知当前的丝材的进给速度，便于用户对丝材的进给进行控制。
进一步，所述喷头基板上设有滑移组件，所述滑移组件包括：连接导轨，所述连接导轨的一端靠近所述固定喷头，所述连接导轨的另一端靠近所述可动喷头；滑块，所述滑块设置于所述连接导轨上，并沿所述连接导轨的长度方向进行滑移；所述进丝组件设置于所述滑块上，并跟随所述滑块进行滑移。
本技术方案中，通过滑移组件的设置，只需要设置一个进丝组件，进丝组件即可对固定喷头以及可动喷头均进行单独进给丝材，即单个的进丝组件即可对应固定喷头与可动喷头，减小了进丝组件的需要，继而减小了双喷头组件的质量，增加了双喷头组件打印时的可靠性。
进一步，所述喷头基板上设有换向组件，所述换向组件包括：齿条，所述齿条设置于所述滑块上；换向电机，所述换向电机设置于所述喷头基板上；换向齿轮，所述换向齿轮设置于所述换向电机的输出端，并啮合于所述齿条，以带动所述齿条沿所述连接导轨的长度方向进行滑移。
本技术方案中，通过换向组件的设置，即可实现进丝组件位置的调节，进丝组件位置的调节动作较为方便。
进一步，所述喷头基板上还设有用于感应所述齿条和/或所述滑块的位置感应组件。
本技术方案中，通过位置感应组件的设置，便于用户得知进丝组件到达特定位置，便于进丝组件开始进丝。
进一步，所述喷头基板内设有冷却管道，所述冷却管道的一端设置进液接头，所述冷却管道的另一端设有出液接头。
本技术方案中，冷却液能够从进液接头内进入冷却管道，继而对喷头基板进行冷却，再从出液接头处流出，喷头基板的冷却过程较为简便，且冷却设备的结构较为简便。
本发明的目的之一还在于提供一种双喷头组件的控制方法，包括：当控制器解析到用户的控制信号时，控制器依据所述控制信号向换向组件发送对应的换向信号；所述换向组件依据接收到的换向信号，控制进丝组件靠近固定喷头或可动喷头；当位置感应组件感应到所述进丝组件时，所述控制器控制所述进丝组件向所述固定喷头或可动喷头内进给丝材。
进一步，步骤所述换向组件依据接收到的换向信号，控制进丝组件靠近固 定喷头或可动喷头具体包括：所述换向组件接收到第一换向信号时，所述控制器控制进丝组件向第一预设方向滑移，所述进丝组件靠近所述可动喷头；换向块按压换向柱；可动喷头向远离喷头基板的方向运动；所述换向组件接收到第二换向信号时，所述控制器控制进丝组件向第二预设方向滑移，并靠近所述固定喷头。
进一步，步骤所述换向组件接收到第二换向信号时，所述控制器控制进丝组件向第二预设方向滑移，并靠近所述固定喷头之后还包括：换向块松开换向柱；可动喷头向靠近喷头基板的方向运动。
进一步，步骤当位置感应组件感应到所述进丝组件时，所述控制器控制所述进丝组件向所述固定喷头或可动喷头内进给丝材之后还包括：从动反馈组件获取被动进丝轮的旋转速度，并将所述旋转速度发送给所述控制器；当所述控制器分析到所述旋转速度不在第一预设范围内时，所述控制器依据所述控制信号和所述旋转速度向所述换向组件发送对应的调节信号；所述换向组件依据接收到的调节信号，控制进丝组件靠近或远离固定喷头。
本发明的目的之一还在于提供一种3D打印机，包括打印机本体，所述打印机本体上安装有一种双喷头组件。
与现有技术相比，本发明提供的一种双喷头组件及其控制方法、3D打印机具有以下有益效果：
1、通过滑移设置的可动喷头的设置，实现了在下端的固定喷头或可动喷头在打印过程中，另一喷头与打印模型之间能够形成间隙，减小了另一喷头与打印的模型接触的可能，继而减小了另一喷头剐蹭模型的可能，减小了喷头对打印过程的影响，增加了3D打印的质量，增加了打印动作的可靠性。
2、通过换向块、换向柱以及弹簧的设置，用户通过控制换向块的按压状态，即可实现可动喷头的位置调节，可动喷头位置调节的动作较为方便。
3、用户旋转换向柱上的换向头之后，换向头能够上移或下移，调节了与 换向块之间的间距，继而实现了换向块按压后，可动喷头的最低位置，增加了双喷头组件的适用范围。
4、通过滑移组件的设置，只需要设置一个进丝组件，进丝组件即可对固定喷头以及可动喷头均进行单独进给丝材，即单个的进丝组件即可对应固定喷头与可动喷头，减小了进丝组件的需要，继而减小了双喷头组件的质量，增加了双喷头组件打印时的可靠性。
5、冷却液能够从进液接头内进入冷却管道，继而对喷头基板进行冷却，再从出液接头处流出，喷头基板的冷却过程较为简便，且冷却设备的结构较为简便；
6、通过控制器调节换向组件的位置，可以调节进丝组件与固定喷头或可动喷头的距离，从而可以进给不同直径的丝材，大大提高了打印机对不同丝材直径的兼容性。
附图说明
下面将以明确易懂的方式，结合附图说明优选实施方式，对一种双喷头组件及其控制方法、3D打印机的上述特性、技术特征、优点及其实现方式予以进一步说明。
图1是本发明一种双喷头组件的结构示意图；
图2是本发明另一种双喷头组件的后视图；
图3是图2的A-A向剖视图；
图4是图3的B处放大图；
图5是图2的C-C向剖视图。
附图标号说明：10.喷头基板，11.进液接头，12.出液接头，13.换向块，14.导向槽，15.喉管，16.被动进丝轮，20.固定喷头，30.可动喷头，31.弹簧，32.换向柱，33.换向头，34.导向柱，35.连接螺栓，40.进丝组件，41.进丝电机，42. 主动进丝轮，50.从动反馈组件，61.连接导轨，62.滑块，71.齿条，72.换向电机，73.换向齿轮，80.位置感应组件，91.导轨，92.滑块，93.转接件。
具体实施方式
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对照附图说明本发明的具体实施方式。显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图，并获得其他的实施方式。
为使图面简洁，各图中只示意性地表示出了与发明相关的部分，它们并不代表其作为产品的实际结构。另外，以使图面简洁便于理解，在有些图中具有相同结构或功能的部件，仅示意性地绘示了其中的一个，或仅标出了其中的一个。在本文中，“一个”不仅表示“仅此一个”，也可以表示“多于一个”的情形。
根据本发明提供的一种实施例，如图1所示，一种双喷头组件，包括：
喷头基板10，喷头基板10能够竖直设置，喷头基板10上设有固定喷头20和可动喷头30，本实施例中，固定喷头20与可动喷头30均设置在喷头基板10的下侧，且固定喷头20与可动喷头30并排设置。
沿可动喷头30的长度方向，即沿竖直方向，可动喷头30在喷头基板10上的位置可调，即可动喷头30在喷头基板10上能够上下调节，继而实现了可动喷头30竖直方向上高度的变化。
进丝组件40，设置于喷头基板10上，进丝组件40用于控制丝材(图中未示出)在固定喷头20或可动喷头30内进给，即进丝组件40能够向固定喷头20内进丝，或向可动喷头30内进丝，丝材能够从固定喷头20内喷出或从可动喷头30内喷出，实现了3D打印的效果。
具体地，在可动喷头30上下调节的过程中，当可动喷头30调节至最下端时， 可动喷头30的下端低于固定喷头20的下端，进丝组件40能够向可动喷头30内进丝，下端的可动喷头30能够开始进行3D打印；当可动喷头30调节至最上端时，可动喷头30的下端高于高度喷头的下端，进丝组件40能够向固定喷头20内进丝，下端的固定喷头20能够开始进行3D打印。
本实施例中，通过滑移设置的可动喷头30的设置，实现了在下端的固定喷头20或可动喷头30在打印过程中，另一喷头与打印模型之间能够形成间隙，减小了另一喷头与打印的模型接触的可能，继而减小了另一喷头剐蹭模型的可能，减小了喷头对打印过程的影响，增加了3D打印的质量，增加了打印动作的可靠性。
优选地，喷头基板10内设有冷却管道(图中未示出)，冷却管道的一端设置进液接头11，冷却管道的另一端设有出液接头12；本实施例中，冷却液能够从进液接头11内进入冷却管道，继而对喷头基板10进行冷却，再从出液接头12处流出，喷头基板10的冷却过程较为简便，且冷却设备的结构较为简便。
具体地，本实施例中，冷却管道能够设置为一个或多个，增加喷头基板10的冷却效率；进液接头11的位置高于出液接头12的位置，因此，冷却液能够在重力的作用下流出喷头基板10；或连接接头11的位置低于出液接头12的位置，冷却液能够向进液接头11内进液，再从出液接头12处喷出；具体地，本实施例中，冷却管道能够竖直开设在冷却基板内，增加了冷却基板的结构强度，减小了冷却基板损坏的可能；本实施例中，冷却管道设置在喷头基板10的左右两端。
根据本发明提供的另一种实施例，如图2至图4所示，一种双喷头组件，本实施例与第一种实施例的区别在于换向柱32与换向块13的设置。
在第一种实施例的基础上，本实施例中，可动喷头30上设有弹簧31，弹簧31远离可动喷头30的一端设置于喷头基板10，由于可动喷头30设置在喷头基板10的下端，因此，弹簧31的上端能够连接在喷头基板10上，弹簧31的下端能够连接在可动喷头30上，弹簧31用于驱动可动喷头30靠近喷头基板10，弹簧31能 够向上拉动喷头基板10。
可动喷头30上设有换向柱32，换向柱32远离可动喷头30的一端向靠近喷头基板10的一侧延伸，具体地，换向柱32能够向上侧延伸至喷头基板10的位置。
喷头基板10上还设有用于按压换向柱32的换向块13，即用户能够通过换向块13来控制换向柱32的状态，当换向块13未按压换向柱32时，可动喷头30能够在弹簧31的作用下处于上端，当换向块13按压换向柱32时，换向块13能够克服弹簧31的弹力，向下按压可动喷头30，可动喷头30能够处于下端，实现了可动喷头30位置的调节。
本实施例中，通过换向块13、换向柱32以及弹簧31的设置，用户通过控制换向块13的按压状态，即可实现可动喷头30的位置调节，可动喷头30位置调节的动作较为方便。
具体地，本实施例中换向柱32可拆卸连接于可动喷头30，换向柱32能够通过连接螺栓35连接在可动喷头30上，便于用户方便地将换向柱32从可动喷头30上取下。
优选地，喷头基板10上还设有滑移驱动组件，滑移驱动组件的滑移方向垂直于换向柱32的轴线方向，即滑移驱动组件能够在喷头基板10上水平滑移，换向块13设置于滑移驱动组件，因此，换向块13能够跟随滑移驱动组件进行滑移。
沿滑移驱动组件的滑移方向，换向块13的一端与可动喷头30之间的间距大于换向块13的另一端与可动喷头30之间的间距，即换向块13左右两端的间距不同；滑移驱动组件在滑移过程中，能够带动换向块13进行滑移，换向柱32上端与换向块13之间的间距能够不断增大或减小。如图3中的换向块13，换向块13的前后高度不同，因此，换向块13在前后滑移时，换向块13与换向柱32之间的间距能够不断改变。
本实施例中，通过滑移驱动组件的设置，便于用户稳定地按压换向柱32，增加了换向柱32按压时的可靠性。
优选地，还包括滑移限位组件，滑移限位组件能够设置在固定喷头20和可动喷头30之间，滑移限位组件包括导轨91和滑块92，导轨91和滑块92分别设置于固定喷头20和可动喷头30上，本实施例中，导轨91设置在固定喷头20上，滑块92设置在可动喷头30上，或滑块92设置在固定喷头20上，导轨91设置在可动喷头30上；滑块92也能够通过转接件93连接在可动喷头30上或固定喷头20上。
导轨91的长度方向平行于滑移驱动组件的滑移方向，即导轨91能够竖直设置在固定喷头20或可动喷头30上；滑块92沿导轨的长度方向滑移连接于导轨91，即滑块92能够在导轨91上上下滑移；因此，在滑移驱动组件驱动可动喷头上下滑移时，滑移限位组件结合固定喷头20能够对可动喷头30进行限位。
本实施例中，通过滑移限位组件的设置，增加了可动喷头30在滑移时受到的约束，减小了可动喷头30在滑移时晃动的可能，增加了可动喷头30在滑移时的稳定性。
换向柱32上还设有用于换向块13抵接的换向头33，换向头33螺纹连接于换向柱32；用户旋转换向柱32上的换向头33之后，换向头33能够上移或下移，调节了与换向块13之间的间距，继而实现了换向块13按压后，可动喷头30的最低位置，增加了双喷头组件的适用范围。
根据上述实施例的改进，本实施例中，可动喷头30上设有导向柱34，导向柱34的一端固定连接于可动喷头30上，导向柱34的另一端嵌设于喷头基板10内。
喷头基板10内开设有用于导向柱34嵌设的导向槽14，导向柱34与导向槽14过渡配合。
本实施例中，通过导向柱34与导向槽14的设置，增加了喷头基板10与可动喷头30之间的约束，减小了可动喷头30在滑移过程中晃动的可能，增加了可动喷头30滑移时的稳定性；且通过过渡配合的设置，进一步减小了可动喷头30在滑移时跳动的可能，增加了可动喷头30滑移时的可靠性。
根据本发明提供的又一种实施例，如图5所示，一种双喷头组件，本实施例与第一种实施例的区别在于进丝组件40的具体结构。
在第一种实施例的基础上，本实施例中，喷头基板10内设有用于丝材插入的喉管15，丝材能够从上端插入喉管15，以进入固定喷头20或可动喷头30内；喷头基板10内设有用于抵接于丝材的被动进丝轮16，即插入喉管15的丝材能够抵接在被动进丝轮16上。
进丝组件40包括：
进丝电机41，进丝电机41设置在喷头基板10上，本实施例中，进丝电机41的轴线水平设置。
主动进丝轮42，主动进丝轮42设置于进丝电机41的输出端，进丝电机41转动即可带动主动进丝轮42转动；优选地，主动进丝轮42与被动进丝轮16均选用齿轮，且主动进丝轮42与被动进丝轮16啮合。
主动进丝轮42与被动进丝轮16分布于丝材的两侧，主动进丝轮42与被动进丝轮16之间的间隙小于喉管15的直径，插入喉管15的丝材能够被夹紧在主动进丝轮42与被动进丝轮16之间，进丝电机41转动之后，主动进丝轮42能够跟随进丝电机41转动，夹紧在主动进丝轮42与被动进丝轮16之间的丝材将开始进给，且被动进丝轮16同步转动。
本实施例中，通过配合的主动进丝轮42与被动进丝轮16的设置，实现了丝材的进给，丝材进给的控制动作较为方便。
具体的，本实施例中，还设置有控制器(图中未示出)，控制器主要指计算机、PLC或单片机等具备计算控制功能的组件，进丝电机41能够连接在控制器上并受控于控制器。
优选地，被动进丝轮16上设有从动反馈组件50，从动反馈组件50同轴连接于被动进丝轮16，从动反馈组件50用于感应被动进丝轮16的旋转速度；本实施例中，通过从动反馈组件50的设置，便于用户得知当前的丝材的进给速度，便 于用户对丝材的进给进行控制。
具体地，本实施例中，从动反馈组件50包括设置在被动进丝轮16上的磁性零件，磁性零件能够通过被动进丝轮16的转动，继而产生交变的磁场，再通过设置旋转传感器检测交变的磁场，即可获取到被动进丝轮16的旋转速度；或从动反馈组件50也可以是直接设置在被动进丝轮16上的编码器，编码器能够跟随被动进丝轮16转动，而将电信号发送给控制器，继而获取到被动进丝轮16的旋转速度。
根据本发明提供的再一种实施例，如图1所示，一种双喷头组件，本实施例与第一种实施例的区别在于滑移组件的设置。
在第一种实施例的基础上，本实施例中，喷头基板10上设有滑移组件，滑移组件包括：
连接导轨61，连接导轨61的一端靠近固定喷头20，连接导轨61的另一端靠近可动喷头30，由于固定喷头20与可动喷头30并排设置，因此，连接导轨61能够水平设置在喷头基板10上。
滑块62，滑块62能够设置于连接导轨61上，并沿连接导轨61的长度方向进行滑移，即滑块62能够左右滑移。进丝组件40设置于滑块62上，并跟随滑块62进行滑移。
本实施例中，通过滑移组件的设置，只需要设置一个进丝组件40，进丝组件40即可对固定喷头20以及可动喷头30均进行单独进给丝材，即单个的进丝组件40即可对应固定喷头20与可动喷头30，减小了进丝组件40的需要，继而减小了双喷头组件的质量，增加了双喷头组件打印时的可靠性。
结合第二种实施例所描述的滑移驱动组件，滑移组件能够作为滑移驱动组件带动换向块13进行滑移，继而实现了换向块13的按压与松开。
具体地，喷头基板10上设有换向组件，换向组件包括：
齿条71，齿条71能够水平设置于滑块62上。
换向电机72，换向电机72能够设置于喷头基板10上，且换向电机72的轴线水平设置。
换向齿轮73，换向齿轮73设置于换向电机72的输出端，并啮合于齿条71，以带动齿条71沿连接导轨61的长度方向进行滑移；即换向齿轮73转动时，能够带动齿条71滑移，继而带动滑块62进行滑移，最终实现了进丝组件40的滑移，进丝组件40即可滑移至可动喷头30的一端或固定喷头20的一端。
本实施例中，通过换向组件的设置，即可实现进丝组件40位置的调节，进丝组件40位置的调节动作较为方便。
优选地，喷头基板10上还设有用于感应齿条71和/或滑块62的位置感应组件80，即齿条71带动进丝组件40左右滑移时，位置感应组件80能够感应齿条71和/或滑块62，并作为进丝组件40是否靠近固定喷头或可动喷头的依据；本实施例中，位置感应组件80能够成对设置，且成对设置的位置感应组件80中，一个位置感应组件80能够设置在靠近固定喷头20的一端，另一个位置感应组件80能够设置在靠近可动喷头组件30的一端；位置感应组件80能够选用为微动开关或接近传感器等感应类装置；本实施例中，通过位置感应组件80的设置，便于用户得知进丝组件40到达特定位置，便于进丝组件40开始进丝。
根据本发明提供的一种实施例，如图6所示，一种双喷头组件的控制方法，包括：
S1、当控制器解析到用户的控制信号时，控制器依据所述控制信号向换向组件发送对应的换向信号。
控制器上能够连接用户的控制盒，用户能够通过控制盒控制双喷头组件的启停与换向；用户能够首先通过控制盒对双喷头组件上电，再选择需要的喷头，即固定喷头或可动喷头，当用户选择之后，控制器即可解析到用户的控制信号，并形成控制信号对于的换向信号，并将换向信号发送给换向组件。
S2、所述换向组件依据接收到的换向信号，控制进丝组件靠近固定喷头或 可动喷头。
结合图1至图5所示，当换向组件接收到换向信号时，换向电机72能够正转或反转，换向电机72转动过程中，换向电机72能够带动齿条71进行滑移，继而带动滑块62进行滑移，并带动进丝组件40左右滑移，即实现了进丝组件40靠近固定喷头20或可动喷头30。
S3、当位置感应组件80感应到所述进丝组件40时，所述控制器控制所述进丝组件40向所述固定喷头20或可动喷头30内进给丝材。
结合图1至图5所示，当位置感应组件80感应到进丝组件40时，即位置感应组件80感应到齿条71或滑块62时，控制器能够得知进丝组件40以及滑移到靠近固定喷头20的一端，或已经滑移到可动喷头30的一端，控制器继而即可控制进丝组件40工作，进丝组件40能够通过喉管15向固定喷头20或可动喷头30内进给丝材。
本实施例中，通过换向信号的生成，控制器能够控制进丝组件40向不同的位置进行滑移，继而使得进丝组件40能够单独对固定喷头20或可动喷头30进行丝材进给；只需要设置单个的进丝组件40，即可实现对固定喷头20或可动喷头30进行丝材进给，减小了双喷头组件的总质量，增加了双喷头组件打印的可靠性。
优选地，步骤S3之后还包括：
S41、从动反馈组件获取被动进丝轮的旋转速度，并将所述旋转速度发送给所述控制器；即编码器或旋转感应器能够获取到被动进丝轮的旋转速度，并将旋转速度发送给控制器。
S42、当所述控制器分析到所述旋转速度不在第一预设范围内时，所述控制器依据所述控制信号和所述旋转速度向所述换向组件发送对应的调节信号。
结合图1至图5所示，用户在启动双喷头组件之前，能够在控制器内预设好第一预设范围，即丝材的传输速度，控制器通过分析旋转速度是否在第一预设 范围内，即可得知丝材的进丝速度是否满足要求，继而以此判断得到主动进丝轮42的位置是否满足要求。控制器能够通过直接增加或降低主动进丝轮42的速度，来实现丝材进给速度的更改，也能够向换向组件发送调节信号，以调节主动进丝轮42与被动进丝轮16之间的间距。
S43、所述换向组件依据接收到的调节信号，控制进丝组件靠近或远离固定喷头；换向组件在接收到调节信号时，进丝组件能够左右微调，实现了主动进丝轮42与被动进丝轮16之间的间距的调节，继而实现了丝材进给时受到的摩擦力，实现了丝材进给速度的调节。
本实施例中，通过被动进丝轮16旋转速度的分析，来达到精确控制丝材进给量的目的，增加了双喷头组件打印的可靠性。
根据本发明提供的另一种实施例，如图7所示，一种双喷头组件的控制方法，
S1、当控制器解析到用户的控制信号时，控制器依据所述控制信号向换向组件发送对应的换向信号。
S21、所述换向组件接收到第一换向信号时，所述控制器控制进丝组件40向第一预设方向滑移，所述进丝组件40靠近所述可动喷头30。
S22、换向块13按压换向柱32。
S23、可动喷头30向远离喷头基板10的方向运动。
当换向组件接收到第一换向信号时，控制器能够控制进丝组件40向可动喷头30的方向滑移，滑移的过程中，由于换向块13设置在带动进丝组件40的滑移组件上，因此换向块13也能够跟随滑移组件进行滑移，换向块13能够向下运动，并向下按压换向柱32；可动喷头30即可运动喷头基板10，可动喷头30即可位于固定喷头20的下侧，直至进丝组件40滑移至被位置感应组件80感应到。
S24、所述换向组件接收到第二换向信号时，所述控制器控制进丝组件40向第二预设方向滑移，并靠近所述固定喷头20。
当换向组件接收到第二换向信号时，控制器能够控制进丝组件40向固定喷头20的方向滑移，直至进丝组件40滑移至被位置感应组件80感应到。
优选地，S25、换向块13松开换向柱32。
优选地，S26、可动喷头30向靠近喷头基板10的方向运动。
当换向组件从滑移喷头的位置向固定喷头20的位置滑移时，由于换向柱32处于按压的状态，因此，控制器能够控制进丝组件40向固定喷头20的方向滑移，滑移的过程中，换向块13能够向下运动，换向柱32被松开，可动喷头30复位，并处于固定喷头20的上端。
S3、当位置感应组件80感应到所述进丝组件40时，所述控制器控制所述进丝组件40向所述固定喷头20或可动喷头30内进给丝材。
具体地，结合图1至图7所示，用户能够首先通过控制盒对双喷头组件上电，再选择需要的喷头，即固定喷头20或可动喷头30，当用户选择之后，控制器即可解析到用户的控制信号，并形成控制信号对于的换向信号，并将换向信号发送给换向组件，即控制器能够向换向组件发送第一换向信号或第二换向信号。
当换向组件接收到第一换向信号时，换向电机72控制其输出端顺指针旋转，连接在换向电机72输出端的换向齿轮73也顺时针旋转，而与换向齿轮73啮合的齿条71能够向左侧移动，即向靠近可动喷头30的方向运动。
在齿条71向左侧的运动过程中，齿条71能够带动其下侧的滑块62向左侧滑移，且由于换向块13能够设置在滑块62上，换向块13也能够跟随滑块62向左侧滑移，在换向块13向左侧的滑移过程中，换向块13与下侧的换向柱32或换向头33之间的间距逐渐减小，直至换向块13抵接在换向头33上，换向块13能够继续向左侧滑移，因此，换向块13也能够不断向下按压换向头33，继而克服弹簧31的弹力，带动可动喷头30向下运动。
直至滑块62滑移至接近端部时，端部的位置感应组件80能够感应到齿条71或滑块62，并以此表明进丝组件40已经运动到靠近可动喷头30的一端，主动进 丝轮42能够接近被动进丝轮16，且主动进丝轮42与被动进丝轮16之间的间隙已经小于喉管15的直径，当用户将丝材从上侧置入喉管15内时，丝材能够夹紧在主动进丝轮42与被动进丝轮16之间。
控制器能够控制进丝组件40工作，由于丝材依据被夹紧在主动进丝轮42与被动进丝轮16之间，因此，主动进丝轮42旋转之后，由于主动进丝轮42与丝材之间存在摩擦力，因此丝材能够向下侧进给，且由于丝材与被动进丝轮16之间也存在摩擦力，因此被动进丝轮16也能够跟随进行转动，且被动进丝轮16的转动速度与主动进丝轮42的转动速度一直。
在丝材进给的过程中，从动反馈组件50能够获取到被动进丝轮16的转动速度，并将转动速度发送给控制器，控制器即可获取到丝材当前的进给速度并进行分析。
当控制器分析到丝材的进给速度持续低于或高于预设速度时，即丝材的当前进给量持续低于或高于预设的进给量，因此，双喷头组件内可能存在欠进给、堵丝或过进给的可能，控制器能够控制其报警装置进行报警，以提醒操作员进行故障排查。
当控制其分析到丝材的进给速度过大或过小时，也能够通过控制主动进丝轮42的转速，实现丝材进给速度的更改。
当用户需要使用固定喷头20进行工作时，用户能够通过操作控制盒选择固定喷头20，换向组件即可接收到第二换向信号，控制电机能够控制其输出端逆指针旋转，连接在换向电机72输出端的换向齿轮73也逆时针旋转，而与换向齿轮73啮合的齿条71能够向右侧移动，即向靠近固定喷头20的方向运动。
在齿条71向右侧的运动过程中，齿条71能够带动其下侧的滑块62向右侧滑移，且由于换向块13能够设置在滑块62上，换向块13也能够跟随滑块62向右侧滑移，在换向块13向右侧的滑移过程中，换向块13能够逐渐向上提升，弹簧31能够逐渐恢复弹性形变，可动喷头30能够向上运动，直至换向块13与换向头33 分离时，可动喷头30能够位于固定喷头20的上侧，实现了可动喷头30的复位。
滑块62滑移至接近固定喷头20一端的端部时，端部的位置感应组件80能够感应到齿条71或滑块62，并以此表明进丝组件40已经运动到靠近固定喷头20的一端，主动进丝轮42能够接近被动进丝轮16，且主动进丝轮42与被动进丝轮16之间的间隙已经小于喉管15的直径，当用户将丝材从上侧置入喉管15内时，丝材能够夹紧在主动进丝轮42与被动进丝轮16之间。
因此，进丝组件40能够再控制丝材从喉管15内向下进给。
根据本发明提供的一种实施例，如图1至图5所示，一种3D打印机，所述打印机本体上安装有上述任意一种实施例所描述的一种双喷头组件。
应当说明的是，上述实施例均可根据需要自由组合。以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (17)

  1. 一种双喷头组件，其特征在于，包括：
    喷头基板，所述喷头基板上设有固定喷头和可动喷头；
    沿所述可动喷头的长度方向，所述可动喷头在所述喷头基板上的位置可调；
    进丝组件，设置于所述喷头基板上，所述进丝组件用于控制丝材在所述固定喷头或可动喷头内进给。
  2. 根据权利要求1所述的一种双喷头组件，其特征在于：
    所述可动喷头上设有弹簧，所述弹簧远离所述可动喷头的一端设置于所述喷头基板，所述弹簧用于驱动所述可动喷头靠近所述喷头基板；
    所述可动喷头上设有换向柱，所述换向柱远离所述可动喷头的一端向靠近所述喷头基板的一侧延伸；
    所述喷头基板上还设有用于按压所述换向柱的换向块。
  3. 根据权利要求2所述的一种双喷头组件，其特征在于：
    所述喷头基板上还设有滑移驱动组件，所述滑移驱动组件的滑移方向垂直于所述换向柱的轴线方向，所述换向块设置于所述滑移驱动组件；
    沿所述滑移驱动组件的滑移方向，所述换向块的一端与所述可动喷头之间的间距大于所述换向块的另一端与所述可动喷头之间的间距。
  4. 根据权利要求3所述的一种双喷头组件，其特征在于：
    还包括滑移限位组件，所述滑移限位组件包括导轨和滑块，所述导轨和滑块分别设置于所述固定喷头和所述可动喷头上；
    所述导轨的长度方向平行于所述滑移驱动组件的滑移方向；
    所述滑块沿所述导轨的长度方向滑移连接于所述导轨。
  5. 根据权利要求2所述的一种双喷头组件，其特征在于：
    所述换向柱上还设有用于所述换向块抵接的换向头，所述换向头螺纹连接于所述换向柱。
  6. 根据权利要求2所述的一种双喷头组件，其特征在于：
    所述可动喷头上设有导向柱，所述导向柱的一端固定连接于所述可动喷头上，所述导向柱的另一端嵌设于所述喷头基板内；
    所述喷头基板内开设有用于所述导向柱嵌设的导向槽，所述导向柱与所述导向槽过渡配合。
  7. 根据权利要求1所述的一种双喷头组件，其特征在于：
    所述喷头基板内设有用于所述丝材插入的喉管；
    所述喷头基板内设有用于抵接于所述丝材的被动进丝轮；
    所述进丝组件包括：
    进丝电机，所述进丝电机设置在所述喷头基板上；
    主动进丝轮，所述主动进丝轮设置于所述进丝电机的输出端；
    所述主动进丝轮与所述被动进丝轮分布于所述丝材的两侧，所述主动进丝轮与所述被动进丝轮之间的间隙小于所述喉管的直径。
  8. 根据权利要求7所述的一种双喷头组件，其特征在于：
    所述被动进丝轮上设有从动反馈组件，所述从动反馈组件同轴连接于所述被动进丝轮，所述从动反馈组件用于感应所述被动进丝轮的旋转速度。
  9. 根据权利要求1所述的一种双喷头组件，其特征在于：
    所述喷头基板上设有滑移组件，所述滑移组件包括：
    连接导轨，所述连接导轨的一端靠近所述固定喷头，所述连接导轨的另一端靠近所述可动喷头；
    滑块，所述滑块设置于所述连接导轨上，并沿所述连接导轨的长度方向进行滑移；
    所述进丝组件设置于所述滑块上，并跟随所述滑块进行滑移。
  10. 根据权利要求9所述的一种双喷头组件，其特征在于：
    所述喷头基板上设有换向组件，所述换向组件包括：
    齿条，所述齿条设置于所述滑块上；
    换向电机，所述换向电机设置于所述喷头基板上；
    换向齿轮，所述换向齿轮设置于所述换向电机的输出端，并啮合于所述齿条，以带动所述齿条沿所述连接导轨的长度方向进行滑移。
  11. 根据权利要求10所述的一种双喷头组件，其特征在于：
    所述喷头基板上还设有用于感应所述齿条和/或所述滑块的位置感应组件。
  12. 根据权利要求1-11中任意一项所述的一种双喷头组件，其特征在于：
    所述喷头基板内设有冷却管道，所述冷却管道的一端设置进液接头，所述冷却管道的另一端设有出液接头。
  13. 一种双喷头组件的控制方法，其特征在于，包括：
    当控制器解析到用户的控制信号时，控制器依据所述控制信号向换向组件发送对应的换向信号；
    所述换向组件依据接收到的换向信号，控制进丝组件靠近固定喷头或可动喷头；
    当位置感应组件感应到所述进丝组件时，所述控制器控制所述进丝组件向所述固定喷头或可动喷头内进给丝材。
  14. 根据权利要求13所述的一种双喷头组件的控制方法，其特征在于，步骤所述换向组件依据接收到的换向信号，控制进丝组件靠近固定喷头或可动喷头具体包括：
    所述换向组件接收到第一换向信号时，所述控制器控制进丝组件向第一预设方向滑移，所述进丝组件靠近所述可动喷头；
    换向块按压换向柱；
    可动喷头向远离喷头基板的方向运动；
    所述换向组件接收到第二换向信号时，所述控制器控制进丝组件向第二预设方向滑移，并靠近所述固定喷头。
  15. 根据权利要求14所述的一种双喷头组件的控制方法，其特征在于，步骤所述换向组件接收到第二换向信号时，所述控制器控制进丝组件向第二预设方向滑移，并靠近所述固定喷头之后还包括：
    换向块松开换向柱；
    可动喷头向靠近喷头基板的方向运动。
  16. 根据权利要求13～15中任意一项所述的一种双喷头组件的控制方法，其特征在于，步骤当位置感应组件感应到所述进丝组件时，所述控制器控制所述进丝组件向所述固定喷头或可动喷头内进给丝材之后还包括：
    从动反馈组件获取被动进丝轮的旋转速度，并将所述旋转速度发送给所述控制器；
    当所述控制器分析到所述旋转速度不在第一预设范围内时，所述控制器依据所述控制信号和所述旋转速度向所述换向组件发送对应的调节信号；
    所述换向组件依据接收到的调节信号，控制进丝组件靠近或远离固定喷头。
  17. 一种3D打印机，其特征在于，包括打印机本体，所述打印机本体上安装有如权利要求1～12中任意一项所述的一种双喷头组件。
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