WO2024012282A1 - 双喷头装置及3d打印设备 - Google Patents

双喷头装置及3d打印设备 Download PDF

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Publication number
WO2024012282A1
WO2024012282A1 PCT/CN2023/105103 CN2023105103W WO2024012282A1 WO 2024012282 A1 WO2024012282 A1 WO 2024012282A1 CN 2023105103 W CN2023105103 W CN 2023105103W WO 2024012282 A1 WO2024012282 A1 WO 2024012282A1
Authority
WO
WIPO (PCT)
Prior art keywords
wall
groove
driving
block
assembly
Prior art date
Application number
PCT/CN2023/105103
Other languages
English (en)
French (fr)
Inventor
唐京科
吴大江
龚波
Original Assignee
深圳市创想三维科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市创想三维科技股份有限公司 filed Critical 深圳市创想三维科技股份有限公司
Publication of WO2024012282A1 publication Critical patent/WO2024012282A1/zh

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Classifications

    • 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
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/50—Means for feeding of material, e.g. heads
    • B22F12/53—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
    • 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

Definitions

  • This application relates to the field of 3D printing technology, and in particular to a dual nozzle device and 3D printing equipment.
  • 3D printing equipment also known as three-dimensional printing equipment, is a kind of cumulative manufacturing technology, that is, a machine of rapid prototyping technology. It is based on a digital model file and uses adhesive materials such as special wax materials, powdered metals, or plastics. , which creates three-dimensional objects by printing layers of adhesive materials.
  • a dual nozzle device is provided.
  • the application provides a dual nozzle device, including a frame, an extrusion assembly, a nozzle assembly and a driving assembly; the driving assembly is installed on the frame, and the nozzle assembly includes a first nozzle module and a second nozzle module.
  • Nozzle module the first nozzle module is connected to the power output end of the drive assembly, the extrusion assembly is connected to the power output end of the drive assembly, the extrusion assembly is used to extrude consumables;
  • the first nozzle module can move up and down relative to the second nozzle module, and at the same time, the extrusion component is driven to move to switch the extrusion position to the same position as the first nozzle module or the second nozzle module.
  • the second spray The header module corresponds.
  • the dual nozzle device includes a central roller
  • the extrusion assembly includes a first pressure wheel and a second pressure wheel
  • the first pressure wheel and the second pressure wheel are respectively located in the center.
  • a transport space for the consumables to pass is formed between the center roller and the first pressure wheel and between the center roller and the second pressure wheel.
  • the driving assembly is used to drive the first pressure wheel or the second pressure wheel to move toward the center roller to reach their respective corresponding working positions.
  • One of the working positions and the central roller can rotate relative to each other to transport the consumables at the corresponding position.
  • the dual nozzle device includes a transmission assembly.
  • the transmission assembly includes a switching member and a transmission block.
  • the driving assembly drives the first nozzle module to move up and down through the switching member.
  • the transmission block is provided on the switching member;
  • the extrusion assembly also includes a support plate, the first pressure wheel and the second pressure wheel are connected to the support plate, the support plate is provided with a chute, and the transmission The block is inserted into the chute.
  • the transmission block pushes the groove wall of the chute so that the support plate drives the first pressure wheel or the second pressure wheel.
  • the pressure roller moves towards the center roller.
  • the frame is provided with a first limiting groove extending along a first horizontal direction, and the support plate is slidably disposed in the first limiting groove.
  • the first limiting groove Used to limit the movement of the support plate in the vertical direction.
  • the driving assembly includes a first driving member and a cam, the cam is connected to the power output end of the first driving member, the cam is provided with a driving groove, and the switching member is provided with There is a matching block, the matching block is in contact with the inner wall of the driving groove, and the first driving member is used to drive the cam to drive the matching block to move in the vertical direction.
  • the frame is provided with a second limiting groove extending in the vertical direction, and the switching member is slidably disposed in the second limiting groove.
  • the second limiting groove is used for To restrict the switching member from moving in directions other than the vertical direction.
  • the transmission assembly further includes an elastic member and a convex block; the convex block is connected to the switching member, one end of the elastic member elastically resists the frame, and the other end elastically resists the frame. Holding on the protrusion, the elastic member is used to apply an upward force to the protrusion so that the side wall of the fitting block is always in contact with the inner wall of the driving groove.
  • the driving groove includes a first groove and a second groove, the first groove and the second groove are distributed along the circumference of the cam, and the first groove
  • the groove wall of the groove has a smooth transition with the groove wall of the second groove
  • the switching member moves to the highest point, and when the fitting block moves to resist the groove wall of the second groove, the switching member The piece moves to the lowest point.
  • a side wall of the second groove away from the first groove forms a hook.
  • the hook is used to hook Hold the matching block and drive the matching block to move upward.
  • the driving groove includes a first inner wall and a second inner wall.
  • the first inner wall is located on a side of the second inner wall close to the rotation center of the cam, in the direction of movement of the cam. , the distance between the first inner wall, the second inner wall and the cam rotation center is gradually expanded, and the first inner wall is used to abut against the matching block to push the matching block to move downward , the second inner wall is used to abut the fitting block to pull the fitting block to move upward.
  • the driving groove further includes a third inner wall and a fourth inner wall, and the third inner wall and the fourth inner wall are located at both ends of the driving groove along the movement direction of the cam, and the The first inner wall and the second inner wall are located between the third inner wall and the fourth inner wall.
  • the third inner wall and the fourth inner wall are adapted to the shape of the matching block. The third inner wall and the fourth inner wall is used to abut the fitting block to limit the relative movement of the fitting block and the cam.
  • the distance between the first inner wall and the second inner wall is greater than the outer contour size of the fitting block.
  • the driving groove is provided through the thickness direction of the cam, and the fitting block is accommodated in the driving groove.
  • the matching block includes a protruding part and a bearing.
  • the protruding part is connected to the switching member.
  • the bearing is sleeved on the protruding part. The bearing is used to abut against the switching member. The inner wall of the drive groove.
  • a 3D printing device is also provided.
  • this application provides a 3D printing device, including the above-mentioned dual nozzle device.
  • Figure 1 is a schematic diagram of a dual nozzle device provided by an embodiment of the present application with the outer casing removed;
  • Figure 2 is a schematic diagram of a dual nozzle device provided by an embodiment of the present application.
  • Figure 3 is an exploded view of a dual nozzle device provided by an embodiment of the present application.
  • Figure 4 is an enlarged view of point A in Figure 1;
  • Figure 5 is an enlarged view of B in Figure 3;
  • Figure 6 is an enlarged view of C in Figure 3;
  • Figure 7 is a schematic diagram of the cooperation between the driving component and the transmission component in the dual nozzle device provided by another embodiment of the present application.
  • first and second are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as “first” and “second” may explicitly or implicitly include at least one of these features.
  • “plurality” means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.
  • connection In this application, unless otherwise clearly stated and limited, the terms “installation”, “connection”, “connection”, “fixing” and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated into one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interactive relationship between two elements, unless otherwise specified limitations. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
  • a first feature being “on” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. touch.
  • the terms “above”, “above” and “above” the first feature is above the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature.
  • "Below”, “below” and “beneath” the first feature to the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.
  • Figure 1 is a schematic diagram of the dual nozzle device provided by the present application with the outer shell removed;
  • Figure 2 is a schematic diagram of the dual nozzle device provided by the present application.
  • An embodiment of the present application provides a dual nozzle device, including a frame 610, an extrusion assembly 200, a nozzle assembly 100 and a driving assembly 300; the driving assembly 300 is installed on the frame 610, and the nozzle assembly 100 includes a first nozzle module 110 and a third nozzle module 110.
  • Two nozzle modules 120, the first nozzle module 110 is connected to the moving part of the driving assembly 300.
  • the extrusion assembly 200 is connected to the power output end of the drive assembly 300.
  • the extrusion assembly 200 is used to extrude consumables; through the driving of the drive assembly 300, the first nozzle module 110 can move up and down relative to the second nozzle module 120. , and simultaneously drive the extrusion assembly 200 to move to switch the extrusion position to correspond to the first nozzle module 110 or the second nozzle module 120 .
  • the first nozzle module 110 retracts upward, and the extrusion position corresponds to the second nozzle module 120. At this time, the first nozzle module 110 is in an inoperative state. Since the first nozzle module 110 and the second nozzle module 120 are staggered in the vertical direction, the first nozzle module 110 can be prevented from scratching the model, thereby improving printing accuracy.
  • the first nozzle module 110 is working, the first nozzle module 110 extends downward, and the extrusion position corresponds to the first nozzle module 110.
  • the second nozzle module 120 is in an inoperative state. Since the second nozzle module 120 and the first nozzle module 110 are staggered in the vertical direction, the second nozzle module 120 can be prevented from scratching the model, thereby improving printing accuracy.
  • the second nozzle module 120 is connected to the bracket.
  • the driving assembly 300 is driven to move the first nozzle module 110 up and down, so that the first nozzle module 110 and the second nozzle module 120 are staggered in the vertical direction to avoid being out of working condition.
  • the nozzle scratches the model, and at the same time, the driving component 300 drives the extrusion component 200 to move, so that the extrusion position is switched to correspond to the nozzle in the working state, thereby replacing the printing nozzle and printing with different colors or materials to avoid mixing of consumable colors or materials. , improve printing accuracy. Since the switching of the extrusion position is synchronized with the replacement of the first nozzle module 110 and the second nozzle module 120 and is realized through a driving member, time is saved and printing efficiency and printing accuracy are improved.
  • Figure 3 is an exploded view of the dual nozzle device provided by the present application.
  • the dual nozzle device includes a central roller 210
  • the extrusion assembly 200 includes a first pressure wheel 220 and a second pressure wheel 230.
  • the first pressure wheel 220 and the second pressure wheel 230 are respectively located horizontally along the center roller 210.
  • a conveying space for consumables to pass is formed between the central roller 210 and the first pressing wheel 220 and between the central roller 210 and the second pressing wheel 230.
  • the driving assembly 300 is used to drive the first pressing wheel.
  • the wheel 220 or the second pressure wheel 230 moves toward the center roller 210 to reach respective corresponding working positions.
  • One of the first pressure wheel 220 and the second pressure wheel 230 is in the working position and the center roller 210 can rotate relatively to transport the corresponding position. Supplies.
  • XX' in Figure 1 of the specification is defined as the left-right direction
  • YY' is the front-rear direction
  • ZZ' is the vertical direction, where the first horizontal direction coincides with the left-right direction, and the second horizontal direction coincides with the front-rear direction.
  • the consumable material between the center roller 210 and the first pressing wheel 220 is defined as the first consumable material 640
  • the consumable material between the center roller 210 and the second pressing wheel 230 is defined as the second consumable material 650
  • the lower end of the first consumable material 640 extends into In the first nozzle module 110
  • the lower end of the second consumable material 650 extends into the second nozzle module 120.
  • the first consumable 640 is transported downward into the first nozzle module 110.
  • the second nozzle module 120 does not work; when the driving assembly 300 drives the second pressure wheel 230 moves toward the center roller 210, so that the transportation space is reduced, and the second consumable 650 is pressed by the second pressure wheel 230 and the center roller 210, that is, the second pressure wheel 230 is in the pressing position at this time.
  • the second consumable 650 is transported downward into the second nozzle module 120.
  • the first nozzle module 110 is not working, thereby realizing the first nozzle module 110 or the second nozzle module 120.
  • the extrusion positions are switched synchronously, thereby saving time and improving printing efficiency.
  • the extrusion assembly 200 switches the extrusion of the first consumable 640 and the second consumable 650, so that when the first nozzle module 110 and the second nozzle module 120 are used independently, contamination of the color or material of the consumables can be avoided, and printing can be improved.
  • the working position refers to the current position of the corresponding pressure wheel when the filament in the squeezed state can be transported to the corresponding printing nozzle by relatively rotating the corresponding pressure wheel and the center roller 210. .
  • the surface of the central roller 210 is provided with a sawtooth structure; and/or the surfaces of the first pressing wheel 220 and the second pressing wheel 230 are both provided with a sawtooth structure.
  • the sawtooth structure can increase the friction with the consumable, thereby facilitating the transportation of the consumable at the corresponding position.
  • gears can be directly selected as the first pressure wheel 220 , the second pressure wheel 230 and the center roller 210 .
  • the dual nozzle device includes a transmission assembly 400.
  • the transmission assembly 400 includes a switching member 410 and a transmission block 420.
  • the driving assembly 300 drives the first nozzle module 110 to move up and down through the switching member 410.
  • the transmission block 420 is disposed on the switching member. 410;
  • the extrusion assembly 200 also includes a support plate 240.
  • the first pressure wheel 220 and the second pressure wheel 230 are connected to the support plate 240.
  • the support plate 240 is provided with a chute 242, and the transmission block 420 is inserted into the chute 242.
  • the transmission block 420 pushes the groove wall of the chute 242 so that the support plate 240 drives the first pressing wheel 220 or the second pressing wheel 230 to move toward the center roller 210 and squeeze the corresponding consumables.
  • the support plate 240 is slidably connected to the frame 610 in the left-right direction.
  • the chute 242 is a long groove.
  • the extending direction of the chute 242 is inclined relative to the movement direction of the switching member 410 .
  • the chute 242 extends along the first pressing wheel 220 to The direction of the second pressing wheel 230 is inclined upward.
  • this embodiment takes the first pressure wheel 220 on the right side of the center roller 210 and the second pressure wheel 230 on the left end of the center roller 210 as an example, that is, the chute 242 moves from right to left. Tilt upward.
  • the switching member 410 drives the transmission block 420 and the first nozzle module 110 to move upward. Since the transmission block 420 is inserted into the chute 242, the transmission block 420 is applied to the wall of the chute 242.
  • the force tilting upward from left to right because the support plate 240 is slidingly connected with the frame 610 in the left and right direction, the support plate 240 drives the first pressing wheel 220 and the second pressing wheel 230 to move to the right, so that the second pressing wheel 230 and the second pressing wheel 230 move to the right.
  • the central roller 210 approaches and squeezes the second consumable material 650 so that the second consumable material 650 between them is squeezed, while the first pressing wheel 220 moves away from the central roller 210 so that the first consumable material 640 between them is relaxed. , that is, the extrusion position corresponds to the second nozzle module 120 at this time, and the second nozzle module 120 can print normally.
  • the first nozzle module 110 and the switching member 410 move upward synchronously, the first nozzle module 110 and the second nozzle module 120 are staggered in the vertical direction, thereby preventing the first nozzle module 110 from scratching the model.
  • the switching member 410 drives the transmission block 420 and the first nozzle module 110 to move downward. Since the transmission block 420 is inserted into the chute 242, the groove wall applied to the chute 242 is The force tilting downward from right to left, because the support plate 240 is slidingly connected with the frame 610 in the left and right direction, the support plate 240 drives the first pressing wheel 220 and the second pressing wheel 230 to move to the left, so that the first pressing wheel 220 and the second pressing wheel 230 move to the left.
  • the central roller 210 approaches and squeezes the first consumable material 640 so that the first consumable material 640 between them is squeezed, while the second pressing wheel 230 moves away from the central roller 210 so that the second consumable material 650 between them is relaxed. , that is, the extrusion position corresponds to the first nozzle module 110 at this time, and the first nozzle module 110 can print normally.
  • the first nozzle module 110 and the switching member 410 move downward synchronously, the second nozzle module 120 and the first nozzle module 110 are staggered in the vertical direction, thereby preventing the second nozzle module 120 from scratching the model.
  • the switching of the first nozzle module 110 and the second nozzle module 120 and the switching of the extrusion position are simultaneously realized through a driving member, thereby ensuring printing efficiency.
  • consumables of different colors or materials can be printed alternately, thereby improving printing accuracy.
  • the transmission block 420 abuts the upper groove of the chute 242 wall, thereby restricting the transmission block 420 from continuing to move upward, and further restricting the support plate 240 from continuing to move to the right, preventing the second pressing wheel 230 and the center roller 210 from crushing the second consumable 650 .
  • the transmission block 420 abuts the lower groove wall of the chute 242, thereby restricting the transmission block 420 from continuing to move downward, and further restricting the support plate 240 from continuing to move to the left, preventing the The first pressing wheel 220 and the central roller 210 press and break the first consumable material 640.
  • the bevel gear, screw assembly, etc. can also be used to cooperate with the driving assembly 300 to realize that the driving assembly 300 drives the first nozzle module 110 to move up and down while driving the support plate 240 to move left and right, which will not be described in detail here. .
  • the area between the first pressure wheel 220 and the second pressure wheel 230 on the support plate 240 is provided with an escape hole 243, and the dual nozzle device also It includes a second driving member 250.
  • the output shaft of the second driving member 250 passes through the escape hole 243 and is connected to the center roller 210.
  • the second driving member 250 is used to drive the center roller 210 to rotate around its own axis.
  • the second driving member 250 is installed on the bracket, the support plate 240 is provided on the front side of the second driving member 250 , and the output shaft of the second driving member 250 extends out of the escape hole 243 and is connected to the center roller 210 .
  • the escape hole 243 extends in the left and right direction, so that when the support plate 240 moves in the left and right direction, the escape hole 243 can avoid the output shaft of the second driving member 250 .
  • the central roller 210 is driven by the second driving member 250 to rotate, so that the central roller 210 and the first pressing wheel 220 or the second pressing wheel 230 press the first consumable material 640 or the second consumable material 650 .
  • the second driving component 250 is a motor.
  • first pressing wheel 220 or the second pressing wheel 230 can also be driven to rotate relative to the center roller 210 to transport the first consumable material 640 or the second consumable material 650 downward.
  • the frame 610 is provided with a first limiting groove 470 extending along the first horizontal direction, and the support plate 240 is slidably disposed in the first limiting groove 470. Inside, the first limiting groove 470 is used to limit the movement of the support plate 240 in the vertical direction.
  • the first limiting groove 470 extends along the left and right directions, thereby playing a limiting role on the support plate 240, so that The support plate 240 is driven by the transmission block 420 to move stably to the left or right, so that the first pressure wheel 220 and the second pressure wheel 230 on the support plate 240 stably move to the pressing position.
  • a first limiting member 260 and a second limiting member 270 connected to the frame 610 are also included.
  • the first limiting member 260 is disposed on The upper end of the support plate 240 and the second limiter 270 are disposed at the lower end of the support plate 240.
  • a first limiter slot 470 is formed between the first limiter 260, the second limiter 270 and the frame 610.
  • the stopper 280 is provided on the positioning member 260 and the second limiting member 270, and the stopper 280 is used to limit the movement of the support plate 240 in the second horizontal direction.
  • the frame 610 is placed on the rear side of the support plate 240, and the stopper 280 is located on the front side of the support plate 240, thereby limiting the movement of the support plate 240 in the front-rear direction.
  • the first limiting member 260 and the second limiting member 270 are located on the upper and lower sides of the supporting plate 240 to limit the upward and downward movement of the supporting plate 240 so that the supporting plate 240 can move stably in the left and right directions driven by the transmission block 420 .
  • first limiting member 260 or the second limiting member 270 may also be provided with a stopper 280, and its specific connection relationship is the same as above, so no details are given.
  • the driving assembly 300 includes a first driving member 310 and a cam 320.
  • the cam 320 is connected to the power output end of the first driving member 310, and the cam 320 is provided with a driving groove 330.
  • the switching member 410 is provided with a matching block 460 which abuts against the inner wall of the driving groove 330 .
  • the first driving member 310 is used to drive the cam 320 to drive the switching member 410 to move in the vertical direction.
  • the matching block 460 is connected to the upper end of the switching member 410.
  • the first driving member 310 drives the cam 320 to rotate in the front and rear direction
  • the driving groove 330 of the cam 320 rotates synchronously with the cam 320, so that the driving groove 330 is in the up and down direction.
  • the fitting block 460 is always in contact with the inner wall of the driving groove 330, so that the position of the fitting block 460 in the up and down direction can be changed.
  • the first driving member 310 is a motor.
  • the frame 610 is provided with a second limiting groove 480 extending in the vertical direction.
  • the switching member 410 is slidably disposed in the second limiting groove 480.
  • the second limiting groove 480 is used to limit switching.
  • the member 410 moves in a direction other than the vertical direction.
  • the second limiting groove 480 extends in the up and down direction, thereby guiding the switching member 410 so that the switching member 410 can stably move upward or downward driven by the cam 320, so that the transmission block 420 is in contact with the cam 320.
  • the transmission block 420 can stably apply a driving force to the groove wall of the chute 242.
  • first limiting member 260 and the second limiting member 270 cover the front side of the second limiting groove 480 and are pressed against the front side of the switching member 410, thereby limiting the movement of the switching member 410 in the front-rear direction. .
  • the transmission assembly 400 further includes an elastic member 430 and a protrusion 440; the protrusion 440 is connected to the switching member 410, one end of the elastic member 430 elastically resists the frame 610, and the other end elastically resists the protrusion.
  • the block 440 and the elastic member 430 are used to apply an upward force to the protruding block 440 so that the side wall of the fitting block 460 is always in contact with the inner wall of the driving groove 330 .
  • the driving groove 330 is an open groove, that is, the driving groove 330 is open.
  • the driving groove 330 is on one side away from the rotation center of the cam 320 and is connected to the outside world.
  • the convex block 440 is arranged above the transmission block 420, and the elastic member 430 The upper end of the elastic member 430 elastically resists the lower end of the bump 440, and the lower end of the elastic member 430 elastically resists the frame 610.
  • the elastic member 430 When the driving assembly 300 drives the switching member 410 to move downward, the elastic member 430 is compressed, thereby causing the switching member 410 to move More stable; when the driving assembly 300 drives the switching member 410 to move upward, the elastic member 430 drives the bump 440 to move upward, so that the side wall of the fitting block 460 is always in contact with the inner wall of the driving groove 330, allowing the switching member 410 to move in the up and down direction. move.
  • the elastic member 430 is a spring.
  • the lower side of the bump 440 is provided with a guide groove 441 facing the opening, and the upper end of the elastic member 430 is received in the guide groove 441, thereby limiting the movement of the switching member 410 in the vertical direction.
  • the driving groove 330 includes a first groove 321 and a second groove 322.
  • the first groove 321 and the second groove 322 are distributed along the circumference of the cam 320, and The groove wall of the first groove 321 and the groove wall of the second groove 322 transition smoothly; when the matching block 460 moves to resist the groove wall of the first groove 321, the switching member 410 moves to the highest point, and the matching block 460 moves When it resists the groove wall of the second groove 322 , the switching member 410 moves to the lowest point.
  • the groove wall of the first groove 321 and the groove wall of the second groove 322 smoothly transition, so that the fitting block 460 can stably move between the first groove 321 and the second groove 322, thereby making the switching member 410 moves steadily up and down.
  • the arrangement of the first groove 321 and the second groove 322 can limit the movement of the fitting block 460 to the highest point and the lowest point, thereby preventing the cam 320 from continuing to drive the fitting block 460 to rotate due to inertia, and improving the efficiency of the fitting block. 460 degree motion stability.
  • the side wall of the second groove 322 on the cam 320 away from the first groove 321 forms a hook 323.
  • the hook 323 can hook the fitting block 460 and drive the The fitting block 460 moves upward, so that the fitting block 460 stably moves upward to the highest point under the action of the hook 323 and the spring, thereby being able to avoid
  • the deformation of the spring is too small and the restoring force is too small to push the fitting block 460 upward, causing the fitting block 460 to be separated from the side wall of the driving groove 330 .
  • the first nozzle module 110 includes a first nozzle 130 , a first heating block 150 and a first throat pipe (not labeled).
  • the first nozzle 130 and the first throat pipe The first heating block 150 is connected to the first nozzle 130 and extends to the connection point between the first nozzle 130 and the first throat pipe, and is sleeved on part of the first throat pipe.
  • the first heating block 150 is used to heat the first nozzle 130 .
  • the sidewall of a nozzle 130 is heated to form a first molten zone.
  • the first nozzle 130 is located at the lower end of the first throat, and the first consumable 640 extends from the first throat and extends downward into the first melting area, thereby being heated by the high temperature of the first heating block 150, so that The first consumable material 640 is melted to a molten state, so that the first consumable material 640 in the molten state flows out from an end of the first nozzle 130 away from the first throat tube to achieve printing.
  • the second nozzle module 120 includes a second nozzle 140 , a second heating block 160 and a second throat (not labeled).
  • the second nozzle 140 and the second throat The second heating block 160 is sleeved on the second nozzle 140 and extends to the connection point between the second nozzle 140 and the second throat pipe, and is sleeved on part of the second throat pipe.
  • the second heating block 160 is used for The sidewall of the second nozzle 140 is heated to form a second melting zone.
  • the second nozzle 140 is located at the lower end of the second throat, and the second consumable 650 extends from the second throat and extends downward into the second melting area, thereby being heated by the high temperature of the second heating block 160, so that The second consumable material 650 is melted to a molten state, so that the second consumable material 650 in the molten state flows out from an end of the second nozzle 140 away from the second throat to achieve printing.
  • the dual nozzle device also includes a heat dissipation assembly 500.
  • the heat dissipation assembly 500 includes a heat dissipation member 510, an air guide member 520 and a heat dissipation block 530.
  • the heat dissipation member 510 is used to drive and To accelerate the air flow, the number of heat sink blocks 530 is two.
  • the two heat sink blocks 530 are respectively set on one end of the first throat away from the first nozzle 130 and one end of the second throat away from the second nozzle 140.
  • the heat sink 510 The outlet is connected to the air inlet of the air guide 520, and the air outlet 540 of the air guide 520 is aligned with the two heat dissipation blocks 530 to dissipate heat from the first throat pipe and the second throat pipe.
  • the two heat dissipation blocks 530 are respectively sleeved on one end of the first throat away from the first nozzle 130 and one end of the second throat away from the second nozzle 140, so that the first throat and the second throat can be dissipated.
  • the air outlet 540 of the air guide 520 is aligned with the two heat dissipation blocks 530, so that the air flow blown out from the air outlet 540 of the air guide 520 can be directly blown to the heat dissipation block 530, thereby accelerating the heat dissipation on the surface of the heat dissipation block 530.
  • the heat is transferred to the heat dissipation block 530 to improve the heat dissipation efficiency of the first throat and the second throat, thus preventing the heat generated by the first heating block 150 and the second heating block 160 from being conducted upward, and keeping the first consumable 640 in the first
  • the toughness in the throat is delivered to the first nozzle 130 and the toughness of the second consumable 650 is delivered in the second throat to the second nozzle 140 .
  • the heat sink 510 is a fan.
  • air outlets 540 of the air guide 520 which are respectively aligned with the heat dissipation block 530 on the first nozzle module 110 and the heat dissipation block 530 on the second nozzle module 120.
  • Such an arrangement allows the air guide 520 to When the cold blow blows toward the corresponding heat dissipation block 530, it can also act on another heat dissipation block 530, thereby improving the heat dissipation efficiency.
  • the dual nozzle device also includes a front shell 620 and a rear shell 630.
  • the front shell 620 is installed at the front end of the frame 610
  • the rear shell 630 is installed at the rear end of the frame 610, the driving assembly 300, the transmission assembly 400 and the extrusion assembly.
  • the assembly 200 is accommodated in the space surrounded by the front shell 620 and the rear shell 630, thereby protecting the driving assembly 300, the transmission assembly 400 and the extrusion assembly 200, and improving the service life of the dual nozzle device.
  • the present application can also improve the driving groove 330 and remove the elastic member 430 and the bump 440.
  • the remaining parts are the same as the above, so they will not be described again.
  • FIG. 7 is a schematic diagram of the cooperation between the driving component and the transmission component in the dual nozzle device provided by another embodiment of the present application.
  • the driving groove 330 includes a first inner wall 331 and a second inner wall 332.
  • the first inner wall 331 is located on a side of the second inner wall 332 close to the rotation center 340 of the cam 320.
  • the distance between an inner wall 331 and a second inner wall 332 and the rotation center 340 of the cam 320 gradually expands.
  • the first inner wall 331 is used to abut against the fitting block 460 to push the fitting block 460 to move downward.
  • the second inner wall 332 is used to It contacts the fitting block 460 to pull the fitting block 460 to move upward.
  • the driving groove 330 is away from the side wall on the side of the rotation center 340 of the cam 320, and there is a distance between the outer contour edges corresponding to the cam 320, and the inner wall of the driving groove 330 forms a closed loop.
  • the distance between the second inner wall 332 and the rotation center 340 of the cam 320 gradually expands, so that when the first driving member 310 drives the cam 320 to rotate counterclockwise, the first inner wall 331 can abut against the matching block 460. And pull the fitting block 460 to move upward until the fitting block 460 contacts the end of the driving groove 330. 460 is closest to the rotation center 340 of the cam 320 .
  • the matching block 460 in this application is completely driven by the inner wall of the driving groove 330 to move up and down. Compared with the method of arranging other auxiliary components such as elastic members, the matching block 460 moves more stably and the structure can also be simplified. .
  • the driving groove 330 further includes a third inner wall 333 and a fourth inner wall 334 .
  • the third inner wall 333 and the fourth inner wall 334 are located at both ends of the driving groove 330 along the movement direction of the cam 320 .
  • An inner wall 331 and a second inner wall 332 are located between the third inner wall 333 and the fourth inner wall 334.
  • the third inner wall 333 and the fourth inner wall 334 are adapted to the shape of the matching block 460.
  • the third inner wall 333 and the fourth inner wall 334 are used for The fitting block 460 is abutted to limit relative movement between the fitting block 460 and the cam 320 .
  • the third inner wall 333 is located at the lower end of the driving groove 330, and the fourth inner wall 334 is located at the upper end of the driving groove 330.
  • the fitting block 460 abuts the third inner wall 333, the fitting block 460 is in contact with the third inner wall 333.
  • 460 is located at the highest point, and when the fitting block 460 contacts the fourth inner wall 334, the fitting block 460 is located at the lowest point.
  • the cam 320 can be restricted from continuing to rotate due to inertia, thereby improving stability.
  • the arrangement of the third inner wall 333 and the fourth inner wall 334 to match the shape of the matching block 460 can reduce stress concentration and improve the service life of the cam 320.
  • both ends of the third inner wall 333 are connected to the first inner wall 331 and the second inner wall 332 respectively, and both ends of the fourth inner wall 334 are connected to the first inner wall 331 and the second inner wall 332 respectively, so that the fitting block 460 can move Smoother.
  • the distance between the first inner wall 331 and the second inner wall 332 is greater than the outer contour size of the fitting block 460 , so that when the fitting block 460 abuts against the first inner wall 331 , the fitting block 460 There is a gap between the first inner wall 331 and the second inner wall 332.
  • the first inner wall 331 drives the fitting block 460 to move
  • friction between the fitting block 460 and the second inner wall 332 can be avoided, thereby making the fitting block 460 move more smoothly.
  • the fitting block 460 abuts the second inner wall 332
  • there is a gap between the fitting block 460 and the first inner wall 331 When the second inner wall 332 drives the fitting block 460 to move, a gap between the fitting block 460 and the first inner wall 331 can be avoided. Friction occurs, thereby improving the smooth movement of the fitting block 460.
  • the driving slot 330 is provided through the thickness direction of the cam 320 , and the fitting block 460 is accommodated in the driving slot 330 , thereby reducing the contact area between the fitting block 460 and the inner wall of the driving slot 330 , that is,
  • the fitting block 460 only needs to be connected with the first inner wall 331, the second inner wall 332, the third inner wall 333 or the fourth inner wall of the driving groove 330.
  • the inner wall 334 only needs to be in contact, which reduces the friction between the fitting block 460 and the inner wall of the driving groove 330, making the fitting block 460 move more smoothly.
  • the fitting block 460 includes a protruding portion 462 and a bearing 461.
  • the protruding portion 462 is connected to the switching member 410.
  • the bearing 461 is sleeved on the protruding portion 462.
  • the bearing 461 is used to abut against the switching member 410.
  • both the third inner wall 333 and the fourth inner wall 334 are arc-shaped.
  • an embodiment of the present application provides a 3D printing device, including the above-mentioned dual nozzle device.
  • the first nozzle module 110 and the second nozzle module 120 are staggered in the vertical direction to prevent the nozzle that is not in working state from scratching the model and improve the printing accuracy.
  • a driving component is used to simultaneously drive the switching and extrusion positions of the printing nozzle. Switching saves time and improves printing efficiency.

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Abstract

本申请涉及一种双喷头装置及3D打印设备。该双喷头装置包括机架(610)、挤压组件(200)、喷头组件(100)及驱动组件(300)；喷头组件(100)包括第一喷头模块(110)与第二喷头模块(120)，第一喷头模块(110)连接于驱动组件(300)，挤压组件(200)连接于驱动组件(300)；通过驱动组件(300)的驱动，使得第一喷头模块(110)能够相对第二喷头模块(120)上下移动，且同时驱动挤压组件(200)移动以将挤压位置切换至与第一喷头模块(110)或第二喷头模块(120)对应。

Description

双喷头装置及3D打印设备
交叉引用
本申请要求于2022年7月13申请的，申请号为2022108216738、名称为“双喷头装置及3D打印设备”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本申请涉及3D打印技术领域，特别是涉及一种双喷头装置及3D打印设备。
背景技术
3D打印设备又称三维打印设备，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打印设备中，一种颜色或者材质的耗材打印结束后，在换色点停止打印喷头打印，更换另外一个打印喷头，但是还需要切换挤压组件，使得另外一个打印喷头中能够挤出其他颜色或者材质的耗材进行打印，从而导致打印效率不够高。
发明内容
根据本申请的各种实施例，提供一种双喷头装置。
第一方面，本申请提供一种双喷头装置，包括机架、挤压组件、喷头组件及驱动组件；所述驱动组件安装于所述机架，所述喷头组件包括第一喷头模块与第二喷头模块，所述第一喷头模块连接于所述驱动组件的动力输出端，所述挤压组件连接于所述驱动组件的动力输出端，所述挤压组件用于挤出耗材；
通过所述驱动组件的驱动，使得所述第一喷头模块能够相对所述第二喷头模块上下移动，且同时驱动所述挤压组件移动以将挤压位置切换至与所述第一喷头模块或所述第二喷 头模块对应。
在其中一个实施例中，所述双喷头装置包括中心滚轮，所述挤压组件包括第一压轮和第二压轮，所述第一压轮和所述第二压轮分别位于所述中心滚轮沿水平第一方向的两侧，所述中心滚轮与所述第一压轮之间以及所述中心滚轮与所述第二压轮之间均形成有用于使所述耗材通过的输送空间，所述驱动组件用于驱动所述第一压轮或所述第二压轮朝向所述中心滚轮移动以到达各自对应的工作位置，所述第一压轮与所述第二压轮中处于所述工作位置的一个与所述中心滚轮能够相对转动以输送对应位置的所述耗材。
在其中一个实施例中，所述双喷头装置包括传动组件，所述传动组件包括切换件和传动块，所述驱动组件通过所述切换件驱动所述第一喷头模块上下移动，所述传动块设置于所述切换件；所述挤压组件还包括支撑板，所述第一压轮和所述第二压轮连接于所述支撑板，所述支撑板上设有斜槽，所述传动块插入所述斜槽内，当所述切换件沿竖直方向移动时，所述传动块推动所述斜槽的槽壁以使所述支撑板带动所述第一压轮或者所述第二压轮朝向所述中心滚轮移动。
在其中一个实施例中，所述机架上设置有沿水平第一方向延伸的第一限位槽，所述支撑板滑设于所述第一限位槽内，所述第一限位槽用于限制所述支撑板沿竖直方向移动。
在其中一个实施例中，所述驱动组件包括第一驱动件和凸轮，所述凸轮连接于所述第一驱动件的动力输出端，所述凸轮上设有驱动槽，所述切换件上设有配合块，所述配合块抵接于所述驱动槽的内壁，所述第一驱动件用于驱动所述凸轮带动所述配合块沿竖直方向移动。
在其中一个实施例中，所述机架上设置有沿竖直方向延伸的第二限位槽，所述切换件滑设于所述第二限位槽内，所述第二限位槽用于限制所述切换件沿竖直方向以外的方向移动。
在其中一个实施例中，所述传动组件还包括弹性件和凸块；所述凸块连接于所述切换件，所述弹性件的一端弹性抵持于所述机架上，另一端弹性抵持于所述凸块，所述弹性件用于施加给所述凸块向上的力，以使所述配合块的侧壁始终抵接于所述驱动槽的内壁。
在其中一个实施例中，所述驱动槽包括第一凹槽和第二凹槽，所述第一凹槽与所述第二凹槽沿所述凸轮的周向分布，且所述第一凹槽的槽壁与所述第二凹槽的槽壁光滑过渡；
所述配合块运动至抵持于所述第一凹槽的槽壁时，所述切换件运动至最高点，所述配合块运动至抵持于第二凹槽的槽壁时，所述切换件运动至最低点。
在其中一个实施例中，所述第二凹槽远离所述第一凹槽的一侧的侧壁形成弯钩，当所述切换件向所述最高点移动时，所述弯钩用于勾住所述配合块，并带动所述配合块向上运动。
在其中一个实施例中，所述驱动槽包括第一内壁和第二内壁，所述第一内壁位于所述第二内壁靠近所述凸轮的转动中心的一侧，在所述凸轮运动的方向上，所述第一内壁和所述第二内壁与所述凸轮转动中心之间的间距均渐扩，所述第一内壁用于抵接于所述配合块，以推动所述配合块向下移动，所述第二内壁用于抵接于所述配合块，以拉动所述配合块向上运动。
在其中一个实施例中，所述驱动槽还包括第三内壁和第四内壁，所述第三内壁和所述第四内壁位于所述驱动槽沿所述凸轮运动方向的两端部，所述第一内壁和所述第二内壁位于所述第三内壁和所述第四内壁之间，所述第三内壁和所述第四内壁与所述配合块的形状适配，所述第三内壁和所述第四内壁用于抵接所述配合块，以限制所述配合块与所述凸轮相对运动。
在其中一个实施例中，所述第一内壁和所述第二内壁之间的距离大于所述配合块的外轮廓尺寸。
在其中一个实施例中，所述驱动槽沿所述凸轮的厚度方向贯穿设置，所述配合块容设于所述驱动槽。
在其中一个实施例中，所述配合块包括凸出部和轴承，所述凸出部连接于所述切换件，所述轴承套接于所述凸出部，所述轴承用于抵接于所述驱动槽的内壁。
本申请的一个或多个实施例的细节在下面的附图和描述中提出。本申请的其它特征、目的和优点将从说明书、附图以及权利要求书变得明显。
根据本申请的各种实施例，还提供一种3D打印设备。
第二方面，本申请提供一种3D打印设备，包括上述的双喷头装置。
附图说明
为了更清楚地说明本申请实施例或传统技术中的技术方案，下面将对实施例或传统技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请 的实施例，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，还可以根据公开的附图获得其他的附图。
图1为本申请一实施例提供的双喷头装置中去掉外壳的示意图；
图2为本申请一实施例提供的双喷头装置的示意图；
图3为本申请一实施例提供的双喷头装置的爆炸图；
图4是图1中A处的放大图；
图5是图3中B处的放大图；
图6是图3中C处的放大图；
图7为本申请另一实施例提供的双喷头装置中驱动组件和传动组件配合的示意图。
附图标记说明：
100-喷头组件；110-第一喷头模块；120-第二喷头模块；130-第一喷嘴；140-第二喷
嘴；150-第一加热块；160-第二加热块；200-挤压组件；210-中心滚轮；220-第一压轮；230-第二压轮；240-支撑板；242-斜槽；243-避让孔；250-第二驱动件；260-第一限位件；270-第二限位件；280-挡块；300-驱动组件；310-第一驱动件；320-凸轮；321-第一凹槽；322-第二凹槽；323-弯钩；330-驱动槽；331-第一内壁；332-第二内壁；333-第三内壁；334-第四内壁；340-转动中心；400-传动组件；410-切换件；420-传动块；430-弹性件；440-凸块；441-导向槽；460-配合块；461-轴承；462-凸出部；470-第一限位槽；480-第二限位槽；500-散热组件；510-散热件；520-导风件；530-散热块；540-出风口；610-机架；620-前壳；630-后壳；640-第一耗材；650-第二耗材。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
为使本申请的上述目的、特征和优点能够更加明显易懂，下面结合附图对本申请的具体实施方式做详细的说明。在下面的描述中阐述了很多具体细节以便于充分理解本申请。但是本申请能够以很多不同于在此描述的其它方式来实施，本领域技术人员可以在不违背本申请内涵的情况下做类似改进，因此本申请不受下面公开的具体实施例的限制。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本申请中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
需要说明的是，当元件被称为“固定于”或“设置于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“上”、“下”、“左”、“右”以及类似的表述只是为了说明的目的，并不表示是唯一的实施方式。
本申请的一个或多个实施例的细节在下面的附图和描述中提出。
参阅图1和图2，图1为本申请提供的双喷头装置中去掉外壳的示意图；图2为本申请提供的双喷头装置的示意图。本申请一实施例提供了的双喷头装置，包括机架610、挤压组件200、喷头组件100及驱动组件300；驱动组件300安装于机架610，喷头组件100包括第一喷头模块110与第二喷头模块120，第一喷头模块110连接于驱动组件300的动 力输出端，挤压组件200连接于驱动组件300的动力输出端，挤压组件200用于挤出耗材；通过驱动组件300的驱动，使得第一喷头模块110能够相对第二喷头模块120上下移动，且同时驱动挤压组件200移动以将挤压位置切换至与第一喷头模块110或第二喷头模块120对应。
本申请中，当第二喷头模块120工作时，第一喷头模块110向上缩回，挤压位置与第二喷头模块120对应，此时第一喷头模块110处于不工作状态。由于第一喷头模块110与第二喷头模块120在竖直方向上错开，则能够避免第一喷头模块110剐蹭模型，从而提高打印精度。当第一喷头模块110工作时，第一喷头模块110向下伸出，挤压位置与第一喷头模块110对应，此时第二喷头模块120处于不工作状态。由于第二喷头模块120与第一喷头模块110在竖直方向上错开，则能够避免第二喷头模块120剐蹭模型，从而提高打印精度。
具体地，第二喷头模块120连接于支架。当需要更换打印颜色或材质时，通过驱动组件300的驱动，使得第一喷头模块110上下移动，从而使得第一喷头模块110与第二喷头模块120在竖直方向上错开，避免不处于工作状态的喷头剐蹭模型，同时驱动组件300驱动挤压组件200移动，使得挤压位置切换至与处于工作状态的喷头对应，从而更换打印喷头，进行不同颜色或材质的打印，避免耗材颜色或者材质的混合，提高打印精度。由于挤压位置的切换与第一喷头模块110和第二喷头模块120的更换是同步进行的，且通过一个驱动件实现的，从而节省了时间，提高了打印效率和打印精度。
参阅图1和图3，图3为本申请提供的双喷头装置的爆炸图。在其中一个实施例中，双喷头装置包括中心滚轮210，挤压组件200包括第一压轮220、第二压轮230，第一压轮220和第二压轮230分别位于中心滚轮210沿水平第一方向的两侧，中心滚轮210与第一压轮220之间以及中心滚轮210与第二压轮230之间均形成有用于使耗材通过的输送空间，驱动组件300用于驱动第一压轮220或第二压轮230朝向中心滚轮210移动以到达各自对应的工作位置，第一压轮220与第二压轮230中处于工作位置的一个与中心滚轮210能够相对转动以输送对应位置的耗材。为了便于描述，定义说明书附图1中的XX’为左右方向，YY’为前后方向，ZZ’为竖直方向，其中水平第一方向与左右方向重合，水平第二方向与前后方向重合。
具体地，定义中心滚轮210与第一压轮220之间的耗材为第一耗材640，中心滚轮210与第二压轮230之间的耗材为第二耗材650，第一耗材640的下端伸入第一喷头模块110内，第二耗材650的下端伸入第二喷头模块120内。当驱动组件300驱动第一压轮220朝向中心滚轮210移动，使得输送空间减小，第一耗材640被第一压轮220和中心滚轮210压紧，即此时第一压轮220处于挤压位置。通过中心滚轮210与第一压轮220的相对转动，从而将第一耗材640向下输送至第一喷头模块110内，此时第二喷头模块120不工作；当驱动组件300驱动第二压轮230朝向中心滚轮210移动，使得输送空间减小，第二耗材650被第二压轮230和中心滚轮210压紧，即此时第二压轮230处于挤压位置。通过中心滚轮210与第二压轮230的相对转动，从而将第二耗材650向下输送至第二喷头模块120内，此时第一喷头模块110不工作，从而实现第一喷头模块110或者第二喷头模块120切换时，挤压位置的同步切换，从而节省了时间，提高了打印效率。同时，挤压组件200对第一耗材640和第二耗材650切换挤压，使得第一喷头模块110和第二喷头模块120在独立使用的过程中，能够避免耗材颜色或者材质的污染，提高打印精度。其中，工作位置指的是耗材能够被挤压，且处于被挤压状态的耗材能够通过其对应的压轮与中心滚轮210相对转动而被输送至应的打印喷头时其对应压轮的当前位置。
进一步地，中心滚轮210的表面设有锯齿结构；和/或，第一压轮220和第二压轮230的表面均设有锯齿结构。当耗材被压紧时，锯齿结构能够增加与耗材的摩擦，进而便于对应位置耗材的输送。在一些实施例中，可以直接选用齿轮作为第一压轮220、第二压轮230以及中心滚轮210。当中心滚轮210转动时，会带动第一压轮220、第二压轮230中与中心滚轮210啮合的一个同步反向转动，从而进行挤料。
参阅图1、图3、图4及图5，图4是图1中A处的放大图；图5是图3中B处的放大图。在其中一个实施例中，双喷头装置包括传动组件400，传动组件400包括切换件410和传动块420，驱动组件300通过切换件410驱动第一喷头模块110上下移动，传动块420设置于切换件410；挤压组件200还包括支撑板240，第一压轮220和第二压轮230连接于支撑板240，支撑板240上设有斜槽242，传动块420插入斜槽242内，当切换件410沿竖直方向移动时，传动块420推动斜槽242的槽壁以使支撑板240带动第一压轮220或者第二压轮230朝向中心滚轮210移动并挤压对应的耗材。
具体地，支撑板240与机架610沿左右方向滑动连接，斜槽242为长条槽，斜槽242的延伸方向相对切换件410的运动方向倾斜，且斜槽242沿第一压轮220至第二压轮230的方向向上倾斜。以说明书附图1为例，本实施例以位于中心滚轮210右侧的为第一压轮220，中心滚轮210左端的为第二压轮230为例进行说明，即斜槽242由右向左向上倾斜。
当驱动组件300驱动切换件410向上移动时，切换件410带动传动块420和第一喷头模块110向上移动，由于传动块420插入斜槽242内，则传动块420施加给斜槽242的槽壁由左向右倾斜向上的力，由于支撑板240与机架610沿左右方向滑动连接，则支撑板240带动第一压轮220和第二压轮230向右移动，使得第二压轮230与中心滚轮210靠近而挤压第二耗材650，使得两者之间的第二耗材650被挤压，而第一压轮220与中心滚轮210远离，使得两者之间的第一耗材640被放松，即此时挤压位置与第二喷头模块120对应，第二喷头模块120能够正常打印。同时，由于第一喷头模块110与切换件410同步向上运动，则第一喷头模块110与第二喷头模块120在竖直方向上错开，从而能够避免第一喷头模块110剐蹭模型。
当驱动组件300驱动切换件410向下移动时，切换件410带动传动块420和第一喷头模块110向下移动，由于传动块420插入斜槽242内，则施加给斜槽242的槽壁由右向左倾斜向下的力，由于支撑板240与机架610沿左右方向滑动连接，则支撑板240带动第一压轮220和第二压轮230向左移动，使得第一压轮220与中心滚轮210靠近而挤压第一耗材640，使得两者之间的第一耗材640被挤压，而第二压轮230与中心滚轮210远离，使得两者之间的第二耗材650被放松，即此时挤压位置与第一喷头模块110对应，第一喷头模块110能够正常打印。同时，由于第一喷头模块110与切换件410同步向下运动，则第二喷头模块120与第一喷头模块110在竖直方向上错开，从而能够避免第二喷头模块120剐蹭模型。
由此，本申请中通过一个驱动件同时实现了第一喷头模块110和第二喷头模块120的切换及挤压位置的切换，保证了打印效率。同时，通过第一喷头模块110与第二喷头模块120及挤压位置的便捷更换，使得不同颜色或者材质的耗材能够交替打印，从而提高了打印精度。
进一步地，当支撑板240向右移动至设定位置时，传动块420抵接于斜槽242的上槽 壁，从而能够限制传动块420继续向上移动，进然限制支撑板240继续向右移动，避免第二压轮230与中心滚轮210将第二耗材650压断。当支撑板240向左移动至设定位置时，传动块420抵接于斜槽242的下槽壁，从而能够限制传动块420继续向下移动，进然限制支撑板240继续向左移动，避免第一压轮220与中心滚轮210将第一耗材640压断。
在其他实施例中，还可以通过锥齿轮、丝杆组件等与驱动组件300配合，实现驱动组件300在驱动第一喷头模块110上下移动的同时驱动支撑板240左右移动，在此不一一赘述。
继续参阅图1、图3、图4及图5，在其中一个实施例中，支撑板240上第一压轮220和第二压轮230之间的区域设有避让孔243，双喷头装置还包括第二驱动件250，第二驱动件250的输出轴穿过避让孔243并连接于中心滚轮210，第二驱动件250用于驱动中心滚轮210绕自身轴向转动。
具体地，第二驱动件250安装于支架，支撑板240设置于第二驱动件250的前侧，第二驱动件250的输出轴伸出避让孔243且连接于中心滚轮210。其中，避让孔243沿左右方向延伸，从而使得支撑板240沿左右方向移动时，避让孔243能够避让第二驱动件250的输出轴。通过第二驱动件250的驱动，使得中心滚轮210转动，从而使得中心滚轮210与第一压轮220或者第二压轮230挤压第一耗材640或者第二耗材650。其中第二驱动件250为电机。
需要说明的是，以说明书附图1为例，当第一喷头模块110工作时，第二驱动件250驱动中心滚轮210顺时针转动，从而将第一耗材640向下推挤至第一喷头模块110内；当第二喷头模块120工作时，第二驱动件250驱动中心滚轮210逆时针转动，从而将第二耗材650向下推挤至第二喷头模块120内。
在其他实施例中，也可以驱动第一压轮220或者第二压轮230相对中心滚轮210转动，从而向下输送第一耗材640或者第二耗材650。
继续参阅图1、图3及图5，在其中一个实施例中，机架610上设置有沿水平第一方向延伸的第一限位槽470，支撑板240滑设于第一限位槽470内，第一限位槽470用于限制支撑板240沿竖直方向移动。
具体地，第一限位槽470沿左右方向延伸，从而能够对支撑板240起到限位作用，使 得支撑板240在传动块420的驱动下，稳定的向左或者向右移动，使得支撑板240上的第一压轮220和第二压轮230稳定的移动至挤压位置。
参阅图1、图3、图4及图5，在其中一个实施例中，还包括连接于机架610的第一限位件260和第二限位件270，第一限位件260设置于支撑板240的上端，第二限位件270设置于支撑板240的下端，第一限位件260、第二限位件270与机架610之间形成第一限位槽470，第一限位件260和第二限位件270上设有挡块280，挡块280用于限制支撑板240沿水平第二方向移动。
具体地，机架610置于支撑板240的后侧，挡块280位于支撑板240的前侧，从而限制支撑板240沿前后方向的移动。第一限位件260和第二限位件270位于支撑板240的上下两侧，从而限制支撑板240上下方向的移动，使得支撑板240能够在传动块420的驱动下沿左右方向稳定移动。
在其他实施例中，也可以是第一限位件260或者第二限位件270上设有挡块280，其具体连接关系与上述相同，故不再赘述。
参阅图1和图2，在其中一个实施例中，驱动组件300包括第一驱动件310和凸轮320，凸轮320连接于第一驱动件310的动力输出端，凸轮320上设有驱动槽330，切换件410上设有配合块460，配合块460抵接于驱动槽330的内壁，第一驱动件310用于驱动凸轮320带动切换件410沿竖直方向移动。
具体地，配合块460连接于切换件410的上端，当第一驱动件310驱动凸轮320绕前后方向转动时，凸轮320的驱动槽330与凸轮320同步转动，使得驱动槽330在上下方向的位置发生改变，而配合块460始终抵接于驱动槽330的内壁，从而使得配合块460在上下方向上的位置能够发生改变。优选地，第一驱动件310为电机。
在其中一个实施例中，机架610上设置有沿竖直方向延伸的第二限位槽480，切换件410滑设于第二限位槽480内，第二限位槽480用于限制切换件410沿竖直方向以外的方向移动。
具体地，第二限位槽480沿上下方向延伸，从而能够对切换件410起到导向作用，使得切换件410在凸轮320的驱动下稳定的向上或者向下移动，从而使得传动块420在与切换件410同步移动的过程中，传动块420能够稳定的施加给斜槽242的槽壁驱动力。
进一步地，第一限位件260与第二限位件270盖设于第二限位槽480的前侧，且抵紧于切换件410的前侧，从而能够限制切换件410沿前后方向移动。
参阅图1、图3及图6，图6是图3中C处的放大图。在其中一个实施例中，传动组件400还包括弹性件430和凸块440；凸块440连接于切换件410，弹性件430的一端弹性抵持于机架610上，另一端弹性抵持于凸块440，弹性件430用于施加给凸块440向上的力，以使配合块460的侧壁始终抵接于驱动槽330的内壁。
具体地，驱动槽330为开放槽，即驱动槽330为开放式的，驱动槽330远离凸轮320的转动中心的一侧，与外界连通，凸块440设置于传动块420的上方，弹性件430的上端弹性抵持于凸块440的下端，弹性件430的下端弹性抵持于机架610，当驱动组件300驱动切换件410向下移动时，弹性件430压缩，从而使得切换件410运动的更加稳定；当驱动组件300驱动切换件410向上移动时，弹性件430驱动凸块440向上运动，从而使得配合块460的侧壁一直抵接于驱动槽330的内壁，实现切换件410沿上下方向移动。优选地，弹性件430为弹簧。
进一步地，凸块440的下侧设有开口朝向的导向槽441，弹性件430的上端容设于导向槽441内，从而对切换件410沿竖直方向移动起到限位作用。
参阅图1和图6，在其中一个实施例中，驱动槽330包括第一凹槽321和第二凹槽322，第一凹槽321与第二凹槽322沿凸轮320的周向分布，且第一凹槽321的槽壁与第二凹槽322的槽壁光滑过渡；配合块460运动至抵持于第一凹槽321的槽壁时，切换件410运动至最高点，配合块460运动至抵持于第二凹槽322的槽壁时，切换件410运动至最低点。
具体地，第一凹槽321的槽壁与第二凹槽322的槽壁光滑过渡，使得配合块460能够稳定的在第一凹槽321和第二凹槽322之间移动，从而使得切换件410稳定上下移动。其中，第一凹槽321和第二凹槽322的设置，能够对配合块460运动至最高点和最低点进行限位，从而能够避免凸轮320因惯性继续带动配合块460转动，提高了配合块460运动的稳定性。
进一步地，凸轮320上第二凹槽322远离第一凹槽321的一侧的侧壁形成弯钩323，当切换件410向最高点移动时，弯钩323能够勾住配合块460，并带动配合块460向上运动，使得配合块460在弯钩323和弹簧的作用下稳定的向上移动至最高点，从而能够避免 弹簧形变过小而回复力过小无法向上推动配合块460而使得配合块460与驱动槽330侧壁脱离的情况发生。
参阅图2和图3，在其中一个实施例中，第一喷头模块110包括第一喷嘴130、第一加热块150和第一喉管(未标出)，第一喷嘴130与第一喉管连通，第一加热块150套设于第一喷嘴130，且延伸至第一喷嘴130与第一喉管的连通处，并将部分第一喉管套设，第一加热块150用于对第一喷嘴130的侧壁加热，以形成第一熔融区域。
具体地，第一喷嘴130位于第一喉管的下端，第一耗材640从第一喉管伸入，并向下延伸至第一熔融区域内，从而通过第一加热块150的高温加热，使得第一耗材640熔化至熔融状态，从而使得熔融状态的第一耗材640从第一喷嘴130远离第一喉管的一端流出以实现打印。
继续参阅图2和图3，在其中一个实施例中，第二喷头模块120包括第二喷嘴140、第二加热块160和第二喉管(未标出)，第二喷嘴140与第二喉管连通，第二加热块160套设于第二喷嘴140，且延伸至第二喷嘴140与第二喉管的连通处，并将部分第二喉管套设，第二加热块160用于对第二喷嘴140的侧壁加热，以形成第二熔融区域。
具体地，第二喷嘴140位于第二喉管的下端，第二耗材650从第二喉管伸入，并向下延伸至第二熔融区域内，从而通过第二加热块160的高温加热，使得第二耗材650熔化至熔融状态，从而使得熔融状态的第二耗材650从第二喷嘴140远离第二喉管的一端流出以实现打印。
参阅图1、图2及图3，在其中一个实施例中，双喷头装置还包括散热组件500，散热组件500包括散热件510、导风件520和散热块530，散热件510用于驱动并加速气流流动，散热块530的数量为两个，两个散热块530分别套设于第一喉管远离第一喷嘴130的一端和第二喉管远离第二喷嘴140的一端，散热件510的出口导通于导风件520的进风口，导风件520的出风口540对准于两个散热块530，以对第一喉管和第二喉管进行散热。
具体地，两个散热块530分别套设于第一喉管远离第一喷嘴130的一端和第二喉管远离第二喷嘴140的一端，从而能够对第一喉管和第二喉管进行散热，而导风件520的出风口540对准于两个散热块530，使得从导风件520的出风口540吹出的气流能够直接吹到散热块530上，从而加快散热块530表面的散热，使得第一喉管和第二喉管能够将更多热 量传递至散热块530上，提高第一喉管和第二喉管的散热效率，进而避免第一加热块150和第二加热块160产生的热量向上传导，保持了第一耗材640在第一喉管中向第一喷嘴130输送的韧性和第二耗材650在第二喉管中向第二喷嘴140输送的韧性。优选地，散热件510为风扇。
进一步地，导风件520的出风口540有两个，分别对准第一喷头模块110上的散热块530和第二喷头模块120上的散热块530，这样的设置，使得导风件520将冷吹吹向对应的散热块530时，还能够作用于另一个散热块530，提高了散热效率。
更进一步地，双喷头装置还包括前壳620和后壳630，前壳620安装于机架610的前端，后壳630安装于机架610的后端，驱动组件300、传动组件400及挤压组件200容设于前壳620和后壳630围设的空间内，从而起到对驱动组件300、传动组件400及挤压组件200的保护作用，提高双喷头装置的使用寿命。
在上述实施例的基础上，本申请还可以对驱动槽330进行改进，并去掉弹性件430和凸块440，其余部分与前述相同，故不再赘述。
参阅图7，图7为本申请另一实施例提供的双喷头装置中驱动组件和传动组件配合的示意图。在其中一个实施例中，驱动槽330包括第一内壁331和第二内壁332，第一内壁331位于第二内壁332靠近凸轮320的转动中心340的一侧，在凸轮320运动的方向上，第一内壁331和第二内壁332与凸轮320转动中心340之间的间距均渐扩，第一内壁331用于抵接于配合块460，以推动配合块460向下移动，第二内壁332用于抵接于配合块460，以拉动配合块460向上运动。
具体地，驱动槽330远离凸轮320转动中心340一侧的侧壁，与凸轮320对应的外轮廓边缘具有间距，驱动槽330的内壁形成闭环。以说明书附图7为例说明，在逆时针方向上，第一内壁331与凸轮320转动中心340的距离渐扩，从而在第一驱动件310带动凸轮320顺时针转动的过程中，第一内壁331能够抵接于配合块460，并推动配合块460向下运动，直到配合块460与驱动槽330的端部抵接时，配合块460与凸轮320转动中心340的距离最远。在逆时针方向上，第二内壁332与凸轮320转动中心340的距离渐扩，从而在第一驱动件310带动凸轮320逆时针转动的过程中，第一内壁331能够抵接于配合块460，并拉动配合块460向上运动，直到配合块460与驱动槽330的端部抵接时，配合块 460与凸轮320转动中心340的距离最近。本申请中的配合块460完全通过驱动槽330的内壁带动，实现上下移动，相较于通过设置弹性件等其他辅助部件的方式而言，使得配合块460移动的更加稳定，同时还能够简化结构。
参阅图7，在其中一个实施例中，驱动槽330还包括第三内壁333和第四内壁334，第三内壁333和第四内壁334位于驱动槽330沿凸轮320运动方向的两端部，第一内壁331和第二内壁332位于第三内壁333和第四内壁334之间，第三内壁333和第四内壁334与配合块460的形状适配，第三内壁333和第四内壁334用于抵接配合块460，以限制配合块460与凸轮320相对运动。
具体地，以说明书附图7为例进行说明，第三内壁333位于驱动槽330的下端，第四内壁334位于驱动槽330的上端，当配合块460与第三内壁333抵接时，配合块460位于最高点，当配合块460与第四内壁334抵接时，配合块460位于最底点。通过第三内壁333和第四内壁334与配合块460抵接的设置，能够限制凸轮320因惯性继续转动，提高了稳定性。而第三内壁333和第四内壁334与配合块460形状适配的设置，能够减少应力集中，提高了凸轮320的使用寿命。
进一步地，第三内壁333的两端分别与第一内壁331和第二内壁332接续，第四内壁334的两端分别与第一内壁331和第二内壁332接续，从而使得配合块460移动地更加顺畅。
参阅图7，在其中一个实施例中，第一内壁331和第二内壁332之间的距离大于配合块460的外轮廓尺寸，从而在配合块460抵接于第一内壁331时，配合块460与第二内壁332之间具有间隙，当第一内壁331带动配合块460移动时，能够避免配合块460与第二内壁332之间发生摩擦，从而提高配合块460移动的更加顺畅。在配合块460抵接于第二内壁332时，配合块460与第一内壁331之间具有间隙，当第二内壁332带动配合块460移动时，能够避免配合块460与第一内壁331之间发生摩擦，从而提高配合块460移动的更加顺畅。
参阅图7，在其中一个实施例中，驱动槽330沿凸轮320的厚度方向贯穿设置，配合块460容设于驱动槽330，从而能够减少配合块460与驱动槽330的内壁接触的面积，即配合块460只需要与驱动槽330的第一内壁331、第二内壁332、第三内壁333或者第四 内壁334接触即可，减少了配合块460与驱动槽330的内壁之间的摩擦力，使得配合块460移动地更加顺畅。
参阅图7，在其中一个实施例中，配合块460包括凸出部462和轴承461，凸出部462连接于切换件410，轴承461套接于凸出部462，轴承461用于抵接于驱动槽330的内壁。
具体地，第三内壁333和第四内壁334均为弧形。当凸轮320相对配合块460转动时，轴承相对凸轮320转动，从而减小配合块460与凸轮320轮壁的摩擦力，使得切换件410运动的更加稳定。
参阅图1、图2及图3，本申请一实施例提供了的3D打印设备，包括上述的双喷头装置。
本申请通过第一喷头模块110与第二喷头模块120在竖直方向上错开，避免不处于工作状态的喷头剐蹭模型，提高打印精度，同时通过一个驱动件同时驱动打印喷头的切换及挤压位置的切换，节省了时间，提高了打印效率。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (15)

  1. 一种双喷头装置，其特征在于，包括：
    机架(610)；
    驱动组件(300)，所述驱动组件(300)安装于所述机架(610)；
    喷头组件(100)，所述喷头组件(100)包括第一喷头模块(110)与第二喷头模块(120)，所述第一喷头模块(110)连接于所述驱动组件(300)的动力输出端；以及，
    挤压组件(200)，所述挤压组件(200)连接于所述驱动组件(300)的动力输出端，所述挤压组件(200)用于挤出耗材；
    通过所述驱动组件(300)的驱动，使得所述第一喷头模块(110)能够相对所述第二喷头模块(120)上下移动，且同时驱动所述挤压组件(200)移动，以将挤压位置切换至与所述第一喷头模块(110)或所述第二喷头模块(120)对应。
  2. 根据权利要求1所述的双喷头装置，其特征在于，所述双喷头装置包括中心滚轮(210)，所述挤压组件(200)包括第一压轮(220)和第二压轮(230)，所述第一压轮(220)和所述第二压轮(230)分别位于所述中心滚轮(210)沿水平第一方向的两侧，所述中心滚轮(210)与所述第一压轮(220)之间以及所述中心滚轮(210)与所述第二压轮(230)之间均形成有用于使所述耗材通过的输送空间，所述驱动组件(300)用于驱动所述第一压轮(220)或所述第二压轮(230)朝向所述中心滚轮(210)移动以到达各自对应的工作位置，所述第一压轮(220)与所述第二压轮(230)中处于所述工作位置的一个与所述中心滚轮(210)能够相对转动以输送对应位置的所述耗材。
  3. 根据权利要求2所述的双喷头装置，其特征在于，所述双喷头装置包括传动组件(400)，所述传动组件(400)包括切换件(410)和传动块(420)，所述驱动组件(300)通过所述切换件(410)驱动所述第一喷头模块(110)上下移动，所述传动块(420)设置于所述切换件(410)；所述挤压组件(200)还包括支撑板(240)，所述第一压轮(220)和所述第二压轮(230)连接于所述支撑板(240)，所述支撑板(240)上设有斜槽(242)，所述传动块(420)插入所述斜槽(242)内，当所述切换件(410)沿竖直方向移动时，所述传动块(420)推动所述斜槽(242)的槽壁以使所述支撑板(240)带动所述第一压轮(220)或者所述第二压轮(230)朝向所述中心滚轮(210)移动。
  4. 根据权利要求3所述的双喷头装置，其特征在于，所述机架(610)上设置有沿水平第一方向延伸的第一限位槽(470)，所述支撑板(240)滑设于所述第一限位槽(470) 内，所述第一限位槽(470)用于限制所述支撑板(240)沿竖直方向移动。
  5. 根据权利要求3所述的双喷头装置，其特征在于，所述驱动组件(300)包括第一驱动件(310)和凸轮(320)，所述凸轮(320)连接于所述第一驱动件(310)的动力输出端，所述凸轮(320)上设有驱动槽(330)，所述切换件(410)上设有配合块(460)，所述配合块(460)抵接于所述驱动槽(330)的内壁，所述第一驱动件(310)用于驱动所述凸轮(320)带动所述配合块(460)沿竖直方向移动。
  6. 根据权利要求5所述的双喷头装置，其特征在于，所述机架(610)上设置有沿竖直方向延伸的第二限位槽(480)，所述切换件(410)滑设于所述第二限位槽(480)内，所述第二限位槽(480)用于限制所述切换件(410)沿竖直方向以外的方向移动。
  7. 根据权利要求5所述的双喷头装置，其特征在于，所述传动组件(400)还包括弹性件(430)和凸块(440)；所述凸块(440)连接于所述切换件(410)，所述弹性件(430)的一端弹性抵持于所述机架(610)上，另一端弹性抵持于所述凸块(440)，所述弹性件(430)用于施加给所述凸块(440)向上的力，以使所述配合块(460)的侧壁始终抵接于所述驱动槽(330)的内壁。
  8. 根据权利要求5所述的双喷头装置，其特征在于，所述驱动槽(330)包括第一凹槽(321)和第二凹槽(322)，所述第一凹槽(321)与所述第二凹槽(322)沿所述凸轮(320)的周向分布，且所述第一凹槽(321)的槽壁与所述第二凹槽(322)的槽壁光滑过渡；
    所述配合块(460)运动至抵持于所述第一凹槽(321)的槽壁时，所述切换件(410)运动至最高点，所述配合块(460)运动至抵持于第二凹槽(322)的槽壁时，所述切换件(410)运动至最低点。
  9. 根据权利要求8所述的双喷头装置，其特征在于，所述第二凹槽(322)远离所述第一凹槽(321)的一侧的侧壁形成弯钩(323)，当所述切换件(410)向所述最高点移动时，所述弯钩(323)用于勾住所述配合块(460)，并带动所述配合块(460)向上运动。
  10. 根据权利要求5所述的双喷头装置，其特征在于，所述驱动槽(330)包括第一内壁(331)和第二内壁(332)，所述第一内壁(331)位于所述第二内壁(332)靠近所述凸轮(320)的转动中心(340)的一侧，在所述凸轮(320)运动的方向上，所述第一内壁(331)和所述第二内壁(332)与所述凸轮(320)转动中心(340)之间的间距均渐扩，所述第一内壁(331)用于抵接于所述配合块(460)，以推动所述配合块(460)向 下移动，所述第二内壁(332)用于抵接于所述配合块(460)，以拉动所述配合块(460)向上运动。
  11. 根据权利要求10所述的双喷头装置，其特征在于，所述驱动槽(330)还包括第三内壁(333)和第四内壁(334)，所述第三内壁(333)和所述第四内壁(334)位于所述驱动槽(330)沿所述凸轮(320)运动方向的两端部，所述第一内壁(331)和所述第二内壁(332)位于所述第三内壁(333)和所述第四内壁(334)之间，所述第三内壁(333)和所述第四内壁(334)与所述配合块(460)的形状适配，所述第三内壁(333)和所述第四内壁(334)用于抵接所述配合块(460)，以限制所述配合块(460)与所述凸轮(320)相对运动。
  12. 根据权利要求10所述的双喷头装置，其特征在于，所述第一内壁(331)和所述第二内壁(332)之间的距离大于所述配合块(460)的外轮廓尺寸。
  13. 根据权利要求5所述的双喷头装置，其特征在于，所述驱动槽(330)沿所述凸轮(320)的厚度方向贯穿设置，所述配合块(460)容设于所述驱动槽(330)。
  14. 根据权利要求5所述的双喷头装置，其特征在于，所述配合块(460)(460)包括凸出部(462)和轴承(461)，所述凸出部(462)连接于所述切换件(410)，所述轴承(461)套接于所述凸出部(462)，所述轴承(461)用于抵接于所述驱动槽(330)的内壁。
  15. 一种3D打印设备，其特征在于，包括权利要求1-14中任一项所述的双喷头装置。
PCT/CN2023/105103 2022-07-13 2023-06-30 双喷头装置及3d打印设备 WO2024012282A1 (zh)

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