Multi-material free switching 3D printing extrusion structure

Abstract

The utility model is suitable for the technical field of 3D printing, and provides a 3D printing extrusion structure capable of freely switching multiple materials, which comprises a suspension frame, a turntable, a plurality of extrusion rods and a plurality of extrusion rods, the rotating structure is connected with the turntable and used for driving the turntable to rotate; each charging structure comprises a charging barrel in threaded connection with the rotating disc, a piston is arranged in each charging barrel, an extrusion assembly is arranged at an outlet of each charging barrel, and each extrusion assembly is connected with the corresponding charging barrel through a mounting assembly; the lifting structure is used for adjusting the height of the loading structure by driving the rotating structure to move; and the pushing assembly discharges the material from the extrusion assembly in a mode of driving the piston to move. According to the utility model, extrusion pipes of different models can be replaced according to requirements by arranging the mounting assembly, and the operation is convenient; the multiple materials are placed in different loading assemblies, so that the situation that the materials are mixed or interfered is avoided, and the printing efficiency and quality are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of 3D printing, and in particular relates to a 3D printing extrusion structure with free switching of multiple materials. Background Art

[0002] 3D printing is a rapid prototyping technology that uses digital model files as the basis and uses bondable materials such as powdered metal or plastic to construct objects by printing layer by layer.

[0003] The extrusion tube in the existing 3D printing extrusion structure is fixed on the barrel, and the model of the extrusion tube cannot be adjusted according to the use requirements. Therefore, a 3D printing extrusion structure with free switching of multiple materials is proposed. Summary of the invention

[0004] The purpose of the utility model is to provide a 3D printing extrusion structure with free switching of multiple materials, aiming to solve the problems raised in the above-mentioned background technology.

[0005] The embodiment of the utility model is implemented as follows: a 3D printing extrusion structure with free switching of multiple materials includes a suspension and also includes:

[0006] Turntable;

[0007] A rotating structure is arranged on the lifting structure, and the rotating structure is connected to the turntable to drive the turntable to rotate;

[0008] Several loading structures, the loading structure comprising a barrel threadedly connected to the turntable, a piston arranged in the barrel, an extrusion assembly arranged at the outlet of the barrel, and the extrusion assembly and the barrel connected via a mounting assembly;

[0009] A lifting structure is arranged on the suspension frame and is used to adjust the height of the loading structure by driving the rotating structure to move;

[0010] The pushing component is arranged on the lifting structure, and the pushing component discharges the material from the extrusion component by driving the piston to move.

[0011] Further, the extrusion assembly comprises:

[0012] A connecting sleeve is sleeved at the outlet of the barrel, and two symmetrically arranged positioning grooves are provided on the side wall of the connecting sleeve;

[0013] The extrusion tube is fixedly connected to the connecting sleeve, and the extrusion tube is communicated with the barrel.

[0014] Furthermore, the installation component includes:

[0015] A fixed seat, fixedly arranged on the outside of the barrel;

[0016] A sliding seat, fixedly connected to a fixed seat;

[0017] A collar, slidably connected to the fixing seat;

[0018] Two symmetrically arranged connecting frames, the connecting frames are fixedly connected to the collar;

[0019] A slider, each connecting frame is fixedly connected with a slider;

[0020] A movable plate, wherein an inclined groove is provided in the movable plate, and a slider is slidably connected in the inclined groove;

[0021] A positioning rod is fixedly connected to the movable plate, and the positioning rod is slidably connected to the sliding seat;

[0022] A plurality of springs, one end of each spring is fixedly connected to the collar, and the other end of each spring is fixedly connected to the fixing seat.

[0023] Furthermore, the lifting structure includes:

[0024] Motor 1, fixedly arranged on the suspension;

[0025] A screw rod is rotatably connected to the suspension, and an output end of the motor 1 is connected to the screw rod;

[0026] Two symmetrically arranged sliding bars are fixedly arranged on the suspension frame;

[0027] The lifting seat is threadedly connected to the screw rod, and the lifting seat is slidably connected to the two sliding rods.

[0028] Furthermore, the rotating structure comprises:

[0029] Motor 2, fixedly arranged on the lifting seat;

[0030] A driving wheel is rotatably connected to the lifting seat, and the output end of the second motor is connected to the driving wheel;

[0031] A driven wheel is rotatably connected to the lifting seat, and the driven wheel is meshingly connected to the driving wheel;

[0032] A turntable, the center of which is fixedly connected to the end of the central axis of the driven wheel, and a barrel is threadedly connected to the turntable.

[0033] Furthermore, the pushing component includes:

[0034] A cylinder, fixedly connected to the lifting seat;

[0035] A mounting head fixedly connected to the output end of the cylinder;

[0036] A push rod is rotatably connected to the mounting head.

[0037] Compared with the prior art, the beneficial effects of the utility model are:

[0038] The 3D printing extrusion structure with free switching of multiple materials can replace different types of extrusion tubes according to needs by setting installation components, which is easy to operate; by placing multiple materials in different loading components, material mixing or interference is avoided, thereby improving printing efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Schematic diagram of the structure of a 3D printed extrusion structure that can switch freely among multiple materials.

[0040] Figure 2 This is a schematic diagram of the enlarged structure of area A in the 3D printed extrusion structure with free switching of multiple materials.

[0041] Figure 3 This is a cross-sectional view of the barrel and connecting sleeve in the 3D printing extrusion structure with free switching of multiple materials.

[0042] In the figure: suspension 11, screw 12, motor 1 13, slide bar 14, mounting head 15, push rod 16, motor 2 17, lifting seat 18, driving wheel 19, driven wheel 21, cylinder 22, turntable 23, barrel 24, extrusion tube 26, connecting sleeve 27, fixed seat 28, spring 29, connecting frame 31, slider 32, moving plate 33, inclined slot 34, positioning rod 35, slide seat 36, collar 37, piston 38. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0044] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0045] like Figure 1-3 As shown, a 3D printing extrusion structure with multi-material free switching provided by an embodiment of the utility model includes a suspension 11 and also includes:

[0046] Turntable 23;

[0047] A rotating structure is provided on the lifting structure, and the rotating structure is connected to the rotating disk 23 to drive the rotating disk 23 to rotate;

[0048] Several charging structures, the charging structures include a barrel 24 threadedly connected to the turntable 23, a piston 38 is arranged in the barrel 24, an extrusion assembly is arranged at the outlet of the barrel 24, and the extrusion assembly is connected to the barrel 24 through a mounting assembly;

[0049] A lifting structure, provided on the suspension 11, is used to adjust the height of the loading structure by driving the rotating structure to move;

[0050] The pushing assembly is arranged on the lifting structure, and the pushing assembly discharges the material from the extrusion assembly by pushing the piston 38 to move.

[0051] In the embodiment of the utility model, preferably, before printing, different materials are loaded into multiple barrels 24 and tightened with matching lids. When printing, select the material to be printed, take out the corresponding barrel 24, unscrew the matching lid, and tighten the barrel 24 on the turntable 23.

[0052] like Figure 1 and Figure 3 As shown, as a preferred embodiment of the utility model, the extrusion assembly includes:

[0053] A connecting sleeve 27 is sleeved at the outlet of the barrel 24, and two symmetrically arranged positioning grooves are provided on the side wall of the connecting sleeve 27;

[0054] The extrusion tube 26 is fixedly connected to the connecting sleeve 27 , and the extrusion tube 26 is communicated with the barrel 24 .

[0055] In the embodiment of the present invention, the pushing assembly pushes the piston 38 in the barrel 24 , so that the material in the barrel 24 is pushed to the extrusion tube 26 , and the material is discharged from the extrusion tube 26 .

[0056] like Figure 2 and Figure 3 As shown, as a preferred embodiment of the utility model, the installation assembly includes:

[0057] A fixed seat 28, fixedly arranged on the outside of the barrel 24;

[0058] The sliding seat 36 is fixedly connected to the fixed seat 28;

[0059] The collar 37 is slidably connected to the fixing seat 28;

[0060] Two symmetrically arranged connecting frames 31, wherein the connecting frames 31 are fixedly connected to the collar 37;

[0061] A slider 32, each connecting frame 31 is fixedly connected with a slider 32;

[0062] A moving plate 33, wherein an inclined groove 34 is formed in the moving plate 33, and a slider 32 is slidably connected in the inclined groove 34;

[0063] A positioning rod 35 is fixedly connected to the moving plate 33, and the positioning rod 35 is slidably connected to the sliding seat 36;

[0064] A plurality of springs 29 , one end of each spring 29 is fixedly connected to the collar 37 , and the other end of each spring 29 is fixedly connected to the fixing seat 28 .

[0065] In the embodiment of the utility model, the end of the positioning rod 35 is matched with the size of the positioning groove on the connecting sleeve 27.

[0066] When the extrusion tube 26 needs to be replaced, the collar 37 is pressed down, the spring 29 is compressed, and the collar 37 drives the slider 32 to move through the connecting frame 31. The slider 32 drives the moving plate 33 to move by slidingly connecting with the inclined groove 34. The moving plate 33 drives the positioning rod 35 to move in the slide seat 36, so that the end of the positioning rod 35 is separated from the positioning groove on the connecting sleeve 27, and the extrusion tube 26 can be removed; when installing the extrusion tube 26, the connecting sleeve 27 is sleeved at the outlet of the barrel 24, the collar 37 is loosened, and the spring 29 drives the collar 37 to return to its original position, and then through the cooperation of the connecting frame 31, the slider 32 and the inclined groove 34, the positioning rod 35 is inserted into the positioning groove on the connecting sleeve 27 to complete the installation.

[0067] like Figure 1 As shown, as a preferred embodiment of the utility model, the lifting structure includes:

[0068] A motor 13 is fixedly mounted on the suspension 11;

[0069] The screw rod 12 is rotatably connected to the suspension 11, and the output end of the motor 13 is connected to the screw rod 12;

[0070] Two symmetrically arranged sliding rods 14 are fixedly arranged on the suspension 11;

[0071] The lifting seat 18 is threadedly connected to the screw rod 12 , and the lifting seat 18 is slidably connected to the two sliding rods 14 .

[0072] In the embodiment of the utility model, during the printing process, the model height may gradually increase. In order to enable normal printing, the height of the extrusion tube 26 can be adjusted. The specific operation is: start the motor 13 to rotate the screw 12, and then the lifting seat 18 moves up along the slide rod 14, thereby adjusting the height of the extrusion tube 26.

[0073] like Figure 1 As shown, as a preferred embodiment of the utility model, the rotating structure includes:

[0074] Motor 2 17, fixedly mounted on a lifting seat 18;

[0075] The driving wheel 19 is rotatably connected to the lifting seat 18, and the output end of the motor 2 17 is connected to the driving wheel 19;

[0076] A driven wheel 21 is rotatably connected to the lifting seat 18, and the driven wheel 21 is meshedly connected to the driving wheel 19;

[0077] The center of the turntable 23 is fixedly connected to the end of the central axis of the driven wheel 21 , and a plurality of barrels 24 distributed in a surrounding manner are threadedly connected to the turntable 23 .

[0078] In the embodiment of the utility model, when the specified material needs to be used, the motor 2 17 is started, the motor 2 17 drives the driving wheel 19 to rotate, the driving wheel 19 drives the driven wheel 21 to rotate, the driven wheel 21 drives the turntable 23 to rotate, and the turntable 23 rotates the barrel 24 containing the specified material to a position coaxial with the pushing component.

[0079] like Figure 1 As shown, as a preferred embodiment of the utility model, the pushing component includes:

[0080] The cylinder 22 is fixedly connected to the lifting seat 18;

[0081] The mounting head 15 is fixedly connected to the output end of the cylinder 22;

[0082] The push rod 16 is rotatably connected to the mounting head 15 .

[0083] In the embodiment of the utility model, preferably, a threaded hole is provided at the upper end of the piston 38, and a thread is provided at the lower outer ring of the push rod 16. Specifically, the turntable 23 rotates the barrel 24 containing the specified material to a position coaxial with the push rod 16, and the cylinder 22 is started. The cylinder 22 drives the push rod 16 to move downward through the mounting head 15, and the push rod 16 pushes the piston 38, thereby extruding the material in the barrel 24 from the extrusion tube 26. When the material in the barrel 24 is used up, the push rod 16 is rotated so that the push rod 16 cooperates with the threaded hole at the upper end of the piston 38, and the cylinder 22 lifts the push rod 16 through the mounting head 15, so that the piston 38 can be taken out.

[0084] The working principle of the utility model is:

[0085] In the 3D printing extrusion structure with multi-material free switching, when the extrusion tube 26 needs to be replaced, the collar 37 is pressed down, the spring 29 is compressed, the collar 37 drives the slider 32 to move through the connecting frame 31, the slider 32 drives the moving plate 33 to move by sliding connection with the inclined groove 34, the moving plate 33 drives the positioning rod 35 to move in the slide seat 36, so that the end of the positioning rod 35 is separated from the positioning groove on the connecting sleeve 27, and the extrusion tube 26 can be removed. When it is necessary to use a specified material, the motor 2 17 is started, the motor 2 17 drives the driving wheel 19 to rotate, the driving wheel 19 drives the driven wheel 21 to rotate, the driven wheel 21 drives the turntable 23 to rotate, the turntable 23 rotates the barrel 24 containing the specified material to the coaxial position with the push rod 16, the cylinder 22 is started, the cylinder 22 drives the push rod 16 to move downward through the mounting head 15, the push rod 16 pushes the piston 38, and then the material in the barrel 24 is extruded from the extrusion tube 26.

[0086] The above are only preferred implementations of the utility model. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model. These should also be regarded as the protection scope of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A 3D printing extrusion structure with free switching of multiple materials, including a suspension, characterized in that: Also includes: Turntable; A rotating structure is arranged on the lifting structure, and the rotating structure is connected to the turntable to drive the turntable to rotate; Several loading structures, the loading structure comprising a barrel threadedly connected to the turntable, a piston arranged in the barrel, an extrusion assembly arranged at the outlet of the barrel, and the extrusion assembly and the barrel connected via a mounting assembly; A lifting structure is arranged on the suspension frame and is used to adjust the height of the loading structure by driving the rotating structure to move; The pushing component is arranged on the lifting structure, and the pushing component discharges the material from the extrusion component by driving the piston to move.

2. The multi-material freely switchable 3D printing extrusion structure according to claim 1, characterized in that: The extrusion assembly comprises: A connecting sleeve is sleeved at the outlet of the barrel, and two symmetrically arranged positioning grooves are provided on the side wall of the connecting sleeve; The extrusion tube is fixedly connected to the connecting sleeve, and the extrusion tube is communicated with the barrel.

3. The 3D printing extrusion structure with free switching of multiple materials according to claim 1, characterized in that: The installation assembly includes: A fixed seat, fixedly arranged on the outside of the barrel; A sliding seat, fixedly connected to a fixed seat; A collar, slidably connected to the fixing seat; Two symmetrically arranged connecting frames, the connecting frames are fixedly connected to the collar; A slider, each connecting frame is fixedly connected with a slider; A movable plate, wherein an inclined groove is provided in the movable plate, and a slider is slidably connected in the inclined groove; A positioning rod is fixedly connected to the movable plate, and the positioning rod is slidably connected to the sliding seat; A plurality of springs, one end of each spring is fixedly connected to the collar, and the other end of each spring is fixedly connected to the fixing seat.

4. The multi-material freely switchable 3D printing extrusion structure according to claim 1, characterized in that: The lifting structure comprises: Motor 1, fixedly arranged on the suspension; A screw rod is rotatably connected to the suspension, and an output end of the motor 1 is connected to the screw rod; Two symmetrically arranged sliding bars are fixedly arranged on the suspension frame; The lifting seat is threadedly connected to the screw rod, and the lifting seat is slidably connected to the two sliding rods.

5. The multi-material freely switchable 3D printing extrusion structure according to claim 4, characterized in that: The rotating structure comprises: Motor 2, fixedly arranged on the lifting seat; A driving wheel is rotatably connected to the lifting seat, and the output end of the second motor is connected to the driving wheel; A driven wheel is rotatably connected to the lifting seat, and the driven wheel is meshingly connected to the driving wheel; A turntable, the center of which is fixedly connected to the end of the central axis of the driven wheel, and a barrel is threadedly connected to the turntable.

6. The multi-material freely switchable 3D printing extrusion structure according to claim 4, characterized in that: The pushing component comprises: A cylinder, fixedly connected to the lifting seat; A mounting head fixedly connected to the output end of the cylinder; A push rod is rotatably connected to the mounting head.

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