Consumable extrusion device for 3D printing equipment

Abstract

The utility model belongs to the technical field of 3D printing, and particularly relates to a consumable extrusion device for 3D printing equipment, which comprises a mixing box, an extrusion box, a transmission mechanism and a baffle plate, through the arrangement of the transmission mechanism, when a connecting plate does not extend into a second sleeve, a servo motor rotates to drive a stirring blade to rotate, so that a spiral blade is difficult to rotate; and when the stirring blades complete mixing and stirring of the consumables, the electric telescopic rod is controlled to drive the spiral blades to rotate, so that the consumables subjected to mixing and stirring are extruded out of the material extruding box, and a baffle is arranged, so that the consumables are extruded out of the material extruding box. A convex block of a baffle plate is clamped into a first filtering hole of a filtering plate, so that the consumables in the mixing box can be prevented from penetrating through the filtering plate and entering the interior of the material extruding box, and the consumables are fully mixed and stirred by stirring blades; and the baffle moves downwards, so that the consumables can conveniently move downwards along the first filter holes and the second filter holes to enter the extrusion box.

Description

Technical Field

[0001] This utility model belongs to the field of 3D printing technology, specifically relating to a consumable extrusion device for 3D printing equipment. Background Technology

[0002] 3D printing is a technology that manufactures solid parts by adding materials layer by layer based on three-dimensional CAD data. The quality of 3D printing filaments directly affects the accuracy and surface quality of the printed product. High-quality filaments can provide more stable printing performance and reduce errors between layers. The filaments are first melted in the filament extrusion equipment. After being extruded, the molten filaments are cooled to form filaments, which are then sent to the 3D printer for 3D printing.

[0003] To save power, existing consumable extrusion devices typically use the same motor to drive the output shaft. The rotation of the output shaft drives the mixing blades and the spiral blades to rotate simultaneously, thereby mixing and extruding the consumables outward in a synchronized manner. When the mixing blades have not fully mixed the consumables, the consumables have not yet fallen onto the spiral blades. The idling of the spiral blades will consume additional energy, resulting in energy waste. Utility Model Content

[0004] The purpose of this invention is to provide a consumable extrusion device for 3D printing equipment, which solves the problem in the prior art where the consumable is not fully mixed by the stirring blades and has not yet fallen onto the spiral blades, causing the spiral blades to idle and consume additional energy, resulting in energy waste.

[0005] The specific technical solution adopted in this utility model is as follows:

[0006] A filament extrusion device for 3D printing equipment, comprising:

[0007] A mixing chamber, wherein multiple stirring blades are provided inside the mixing chamber, and the rotation of the stirring blades facilitates the mixing of consumables;

[0008] An extrusion box is fixedly installed at the bottom of the mixing box. The extrusion box is equipped with spiral blades inside. The rotation of the spiral blades facilitates the extrusion of consumables outward.

[0009] A transmission mechanism is provided inside and outside the mixing chamber. The transmission mechanism is used to drive the spiral blades to rotate after the stirring blades have completed mixing and stirring of the consumables.

[0010] A baffle is slidably connected to the inner wall of the mixing chamber. The baffle can prevent consumables from entering the extrusion box from the mixing chamber before the mixing blades have finished mixing.

[0011] In a preferred embodiment, a servo motor is fixedly installed on the top surface of the mixing chamber. The output end of the servo motor passes through the mixing chamber and is rotatably connected to it. A rotating shaft is fixedly installed on the bottom surface of the output end of the servo motor. The outer side of the rotating shaft is fixedly connected to the stirring blade. A filter plate is fixedly installed on the inner wall of the mixing chamber. A feed pipe and a second discharge pipe are respectively connected to the top and bottom surfaces of the mixing chamber. The other end of the second discharge pipe is connected to the extrusion box. A first discharge pipe is connected to the bottom of the extrusion box. A solenoid valve is installed on the outer side of the first discharge pipe.

[0012] In a preferred embodiment, a first rotating rod is provided below the rotating shaft. The first rotating rod passes through the mixing box to the inside of the extrusion box and is rotatably connected to the mixing box via a bearing. A first bevel gear is fixedly provided on the bottom surface of the first rotating rod. A second bevel gear meshes with the outer side of the first bevel gear. A second rotating rod passes through the inner side of the second bevel gear and is fixedly connected to the second bevel gear. The left and right ends of the second rotating rod are rotatably connected to the extrusion box via bearings. The outer side of the second rotating rod is fixedly connected to a spiral blade. A fixing plate is fixedly provided on the inner wall of the extrusion box. The second rotating rod passes through the fixing plate and is rotatably connected to the fixing plate.

[0013] In a preferred embodiment, the transmission mechanism includes a support plate, an electric telescopic rod, a lifting plate, a lifting rod, a first vertical groove, a second vertical groove, a first sleeve, a limiting ring, a slider, a connecting plate, a plug rod, a return spring, a second sleeve, and an arc-shaped slide groove. Symmetrical support plates are fixedly installed on the outer side of the mixing box. An electric telescopic rod is fixedly installed on the top surface of the support plate. A lifting plate is fixedly installed on the top surface of the output end of the electric telescopic rod. A lifting rod is fixedly installed on the side of the lifting plate. The other side of each lifting rod is fixedly connected to a baffle. A symmetrical first vertical groove is provided on the outer side of the mixing box, and a symmetrical second vertical groove is provided on the inner side of the mixing box. A first sleeve is rotatably connected to the outer side of the rotating shaft. A limiting ring is fixedly installed on the outer side of the first sleeve. A symmetrical slider is fixedly installed on the outer side of the rotating shaft. A connecting plate is fixedly installed on the bottom surface of the first sleeve. A symmetrical mounting groove is provided inside the connecting plate. A return spring is fixedly installed on the side of each mounting groove that is far apart from the others. A plug rod is fixedly installed at the other end of each return spring. A second sleeve is fixedly installed on the top surface of the first rotating rod, and a symmetrical arc-shaped slide groove is connected to the inner side of the second sleeve.

[0014] In a preferred embodiment, the lifting plate is adapted to the first vertical groove, and the lifting plate is slidably connected to the mixing box through the first vertical groove. The first vertical groove is connected to the second vertical groove. The front and rear sides of the lifting rod are slidably connected to the inner walls of the front and rear sides of the second vertical groove, respectively. The bottom surface of the baffle is provided with a circular groove adapted to the first sleeve. The first sleeve extends into the baffle through the circular groove and is rotatably connected to the baffle. The outer side of the circular groove is connected to an annular groove adapted to the limiting ring. The limiting ring is rotatably connected to the baffle through the annular groove. The inner wall of the first sleeve is provided with a sliding groove adapted to the slider. The slider is slidably connected to the first sleeve through the sliding groove. The left and right sides of the connecting plate are provided with slots that connect to the interior of the mounting groove. Both the slots and the arc-shaped sliding groove are adapted to the insertion rod. The insertion rod is slidably connected to the connecting plate through the slots.

[0015] In a preferred embodiment, the top surface of the filter plate is provided with a plurality of first filter holes, the top surface of the baffle is provided with a plurality of second filter holes, the top surface of the baffle is provided with a plurality of protrusions adapted to the first filter holes, and the top surfaces of the filter plate and the baffle are respectively provided with a first through hole and a second through hole adapted to a rotating shaft. The rotating shaft passes through the filter plate through the first through hole and is rotatably connected to the filter plate, and the rotating shaft passes through the baffle through the second through hole and is movably connected to the baffle.

[0016] The technical effects achieved by this utility model are as follows:

[0017] This invention, through the setting of a transmission mechanism, prevents the spiral blades from rotating when the servo motor drives the stirring blades to rotate, thus avoiding the spiral blades from spinning idly and saving energy. When the stirring blades complete the mixing of the consumables, the electric telescopic rod is controlled to move the lifting plate downwards, thereby moving the connecting plate downwards into the second sleeve. The rotating shaft drives the connecting plate to rotate, and the rotating connecting plate drives the insert rod to rotate. When the insert rod is aligned with the arc-shaped groove, the insert rod moves outwards and extends into the arc-shaped groove under the influence of centrifugal force. The return spring is compressed, and when the insert rod rotates and contacts the inner wall of the arc-shaped groove, it drives the second sleeve to rotate. The rotation of the second sleeve can drive the spiral blades to rotate, thereby extruding the mixed consumables to the outside of the extrusion box.

[0018] This invention features a baffle plate whose protrusion engages with the first filter hole of the filter plate, preventing consumables from passing through the filter plate into the extrusion box. This allows the stirring blades to fully mix the consumables. When the stirring blades have finished mixing the consumables, the baffle plate moves downward, allowing the consumables to easily enter the top surface of the baffle plate along the gap between the inner wall of the first filter hole and the protrusion, and then move downward along the second filter hole into the extrusion box. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the front view sectional structure of this utility model;

[0021] Figure 3 This is a utility model Figure 2 A magnified view of the structure at point A in the middle;

[0022] Figure 4 This is a utility model Figure 2 A magnified schematic diagram of the structure at point B in the middle;

[0023] Figure 5 This is a schematic diagram of the cross-sectional structure of the filter plate and baffle of this utility model;

[0024] Figure 6 This is a schematic diagram of the second sleeve structure of this utility model.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Mixing box; 2. Extrusion box; 3. Servo motor; 4. Feed pipe; 5. First discharge pipe; 6. Solenoid valve;

[0027] 700. Transmission mechanism; 701. Support plate; 702. Electric telescopic rod; 703. Lifting plate; 704. Lifting rod; 705. First vertical groove; 706. Second vertical groove; 707. First sleeve; 708. Limiting ring; 709. Sliding block; 710. Connecting plate; 711. Insert rod; 712. Return spring; 713. Second sleeve; 714. Arc-shaped slide groove;

[0028] 8. Rotating shaft; 9. Stirring blade; 10. Filter plate; 11. Baffle; 12. Second discharge pipe; 13. First rotating rod; 14. First bevel gear; 15. Second bevel gear; 16. Second rotating rod; 17. Spiral blade; 18. Fixing plate; 19. First filter hole; 20. Protrusion; 21. Second filter hole. Detailed Implementation

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of this utility model. However, this utility model may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this utility model. The phrase "in a preferred embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0032] Secondly, this utility model is described in detail with reference to the schematic diagrams. When detailing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0033] Please see the appendix Figures 1-2 As shown, this utility model provides a consumable extrusion device for 3D printing equipment, including: a mixing box 1, an extrusion box 2, a transmission mechanism 700, and a baffle 11.

[0034] In a preferred embodiment, please refer to Figures 1-2 A heating rod is installed on the inner wall of the mixing chamber 1. An extrusion box 2 is fixedly installed at the bottom of the mixing chamber 1. A servo motor 3 is fixedly installed on the top surface of the mixing chamber 1. The output end of the servo motor 3 passes through the mixing chamber 1 and is rotatably connected to the mixing chamber 1. A rotating shaft 8 is fixedly installed on the bottom surface of the output end of the servo motor 3. Multiple stirring blades 9 are fixedly installed on the outside of the rotating shaft 8. The bottom surface of the mixing chamber 1 is inclined. The top and bottom surfaces of the mixing chamber 1 are respectively connected to the feed pipe 4 and the second discharge pipe 12. The other end of the second discharge pipe 12 is connected to the extrusion box 2. The bottom of the extrusion box 2 is connected to the first discharge pipe 5. A solenoid valve 6 is installed on the outside of the first discharge pipe 5. The servo motor 3, the heating rod and the solenoid valve 6 are electrically connected to the controller of the 3D printing equipment. A second rotating rod 16 is rotatably connected between the left and right sides inside the extrusion box 2 through bearings. A spiral blade 17 is fixedly installed on the outside of the second rotating rod 16.

[0035] In this embodiment, the consumable is added into the mixing box 1 along the feed pipe 4, the heating rod is turned on to heat the consumable, the servo motor 3 is controlled to drive the rotating shaft 8 to rotate, the rotating shaft 8 drives the stirring blade 9 to rotate, so that the consumable is mixed and stirred while being heated. After the consumable is mixed and stirred and enters the extrusion box 2 along the second discharge pipe 12, the second rotating rod 16 rotates and drives the spiral blade 17 to rotate, which can drive the consumable to move inside the extrusion box 2 until the consumable moves into the first discharge pipe 5. The solenoid valve 6 is then opened to discharge the consumable outward.

[0036] In a preferred embodiment, please refer to Figures 1-5A filter plate 10 is fixedly installed on the inner wall of the mixing chamber 1. The filter plate 10 is located below the stirring blade 9. Multiple first filter holes 19 are provided through the top surface of the filter plate 10. A baffle 11 is provided below the filter plate 10. The outer side of the baffle 11 is slidably connected to the inner wall of the mixing chamber 1. A protrusion 20 adapted to the first filter holes 19 is fixedly installed on the top surface of the baffle 11. The protrusion 20 is a frustum shape that is thinner at the top and thicker at the bottom. Multiple second filter holes 21 are provided through the top surface of the baffle 11. The top surfaces of the filter plate 10 and the baffle 11 are respectively provided with a first through hole and a second through hole adapted to the rotating shaft 8. The rotating shaft 8 passes through the filter plate 10 through the first through hole and is rotatably connected to the filter plate 10. The rotating shaft 8 passes through the baffle 11 through the second through hole and is movably connected to the baffle 11.

[0037] In this embodiment, when the stirring blade 9 rotates to mix the consumables, the baffle 11 is pressed against the filter plate 10, and the protrusion 20 of the baffle 11 engages with the first filter hole 19 of the filter plate 10. At this time, the filter plate 10 covers the second filter hole 21 of the baffle 11, thereby preventing the consumables inside the mixing box 1 from passing through the filter plate 10 and entering the extrusion box 2, so that the stirring blade 9 can fully mix the consumables. When the stirring blade 9 finishes mixing the consumables, the baffle 11 moves downward to facilitate the consumables to enter the top surface of the baffle 11 along the gap between the inner wall of the first filter hole 19 and the protrusion 20, and then move along the second filter hole 21 to the bottom of the baffle 11, and enter the extrusion box 2 along the second discharge pipe 12.

[0038] In a preferred embodiment, please refer to Figures 1-2 A first rotating rod 13 is provided below the rotating shaft 8. The first rotating rod 13 passes through the mixing box 1 to the inside of the extrusion box 2 and is rotatably connected to the mixing box 1 through a bearing. A first bevel gear 14 is fixedly provided on the bottom surface of the first rotating rod 13. A second bevel gear 15 meshes with the outside of the first bevel gear 14. The inside of the second bevel gear 15 is penetrated by a second rotating rod 16 and is fixedly connected to the second rotating rod 16. A fixing plate 18 is fixedly provided on the inner wall of the extrusion box 2. The fixing plate 18 divides the inside of the extrusion box 2. The second rotating rod 16 passes through the fixing plate 18 and is rotatably connected to the fixing plate 18.

[0039] In this embodiment, when the first rotating rod 13 rotates, it can drive the first bevel gear 14 to rotate, the first bevel gear 14 rotates, the second bevel gear 15 rotates, the second bevel gear 15 rotates, the second rotating rod 16 rotates, thereby driving the spiral blade 17 to rotate.

[0040] In a preferred embodiment, please refer to Figures 1-5The mixing box 1 is equipped with a transmission mechanism 700 inside and outside. The transmission mechanism 700 consists of a support plate 701, an electric telescopic rod 702, a lifting plate 703, a lifting rod 704, a first vertical groove 705, a second vertical groove 706, a first sleeve 707, a limiting ring 708, a slider 709, a connecting plate 710, an insert rod 711, a return spring 712, a second sleeve 713, and an arc-shaped slide groove 714. Symmetrical support plates 701 are fixedly installed on the outside of the mixing box 1. An electric telescopic rod 702 is fixedly installed on the top surface of the support plate 701. A lifting plate 703 is fixedly installed on the top surface of the output end of the electric telescopic rod 702. A lifting rod 704 is fixedly installed on the side of the lifting plate 703. The other side of the lifting rod 704 is connected to... The baffle 11 is fixedly connected. A symmetrical first vertical groove 705 is provided on the outside of the mixing box 1, and a symmetrical second vertical groove 706 is provided on the inside of the mixing box 1. A first sleeve 707 is rotatably connected to the outside of the rotating shaft 8. A limit ring 708 is fixedly provided on the outside of the first sleeve 707. A symmetrical slider 709 is fixedly provided on the outside of the rotating shaft 8. A connecting plate 710 is fixedly provided on the bottom surface of the first sleeve 707. A symmetrical mounting groove is provided inside the connecting plate 710. A return spring 712 is fixedly provided on the side of the mounting groove that is far apart from each other. A plug rod 711 is fixedly provided on the other end of the return spring 712. A second sleeve 713 is fixedly provided on the top surface of the first rotating rod 13. A symmetrical arc-shaped sliding groove 714 is connected to the inside of the second sleeve 713.

[0041] In this embodiment, the lifting plate 703 is adapted to the first vertical groove 705, and the lifting plate 703 is slidably connected to the mixing box 1 through the first vertical groove 705. The first vertical groove 705 is connected to the second vertical groove 706. The front and rear sides of the lifting rod 704 are slidably connected to the inner walls of the front and rear sides of the second vertical groove 706, respectively. The bottom surface of the baffle 11 is provided with a circular groove adapted to the first sleeve 707. The first sleeve 707 extends into the baffle 11 through the circular groove and is rotatably connected to the baffle 11. The outer side of the circular groove is connected to an annular groove adapted to the limiting ring 708. The limiting ring 708 is rotatably connected to the baffle 11 through the annular groove. The inner wall of the first sleeve 707 is provided with a sliding groove adapted to the slider 709. The slider 709 is slidably connected to the first sleeve 707 through the sliding groove. The left and right sides of the connecting plate 710 are provided with slots that connect to the inside of the mounting groove. The slots and the arc-shaped sliding groove 714 are both adapted to the insertion rod 711. The insertion rod 711 is slidably connected to the connecting plate 710 through the slots.

[0042] In this embodiment, the electric telescopic rod 702 is electrically connected to the controller of the 3D printing equipment. When the lifting plate 703 drives the lifting rod 704 to move downward to the lowest position, the top surface of the filter plate 10 is still lower than the top of the lifting rod 704, thereby preventing the consumables inside the mixing box 1 from entering the outside of the mixing box 1 along the second vertical groove 706 and the first vertical groove 705. When the baffle 11 moves up and down, it can drive the limiting ring 708 to move up and down, thereby driving the first sleeve 707 to move up and down. The slider 709 cooperates with the sliding groove to guide the movement of the first sleeve 707. The rotation of the rotating shaft 8 can drive the slider 709 to rotate, and the rotation of the slider 709 can drive the first sleeve 707 to rotate, thereby driving the connecting plate 710 to rotate. When the stirring blade 9 mixes and stirs the consumables, the connecting plate 710 does not extend into the second sleeve 713. When the servo motor 3 rotates and drives the stirring blade 9 to rotate, it is difficult to drive the spiral blade 17 to rotate, thereby avoiding the spiral blade 17 from spinning idly, saving energy and avoiding waste.

[0043] In this embodiment, when the stirring blade 9 completes the mixing of the consumables, the servo motor 3 stops rotating the shaft 8, and the electric telescopic rod 702 moves the lifting plate 703 downwards. The movement of the lifting plate 703 moves the lifting rod 704 and the baffle 11 downwards. The movement of the baffle 11 moves the connecting plate 710 downwards, thereby moving the connecting plate 710 into the second sleeve 713. The servo motor 3 then rotates the shaft 8, which in turn rotates the connecting plate 710. The rotation of the connecting plate 710 then moves the insertion rod 71... 1. When the insertion rod 711 is aligned with the arc-shaped groove 714, the insertion rod 711 moves outward under the influence of centrifugal force and extends into the arc-shaped groove 714. The return spring 712 is compressed. When the insertion rod 711 rotates and contacts the inner wall of the arc-shaped groove 714, it drives the second sleeve 713 to rotate. The inner wall of the arc-shaped groove 714 is attached with a rubber pad with a buffer function. The rotation of the second sleeve 713 drives the first rotating rod 13 to rotate. The rotation of the first rotating rod 13 can drive the spiral blade 17 to rotate, thereby extruding the consumables that have completed mixing to the outside of the extrusion box 2.

[0044] The working principle of this utility is as follows:

[0045] When using the device, the consumables are added into the mixing box 1 along the feed pipe 4. The consumables fall on the top surface of the filter plate 10. The protrusion 20 of the baffle 11 engages with the first filter hole 19 of the filter plate 10, preventing the consumables in the mixing box 1 from passing through the filter plate 10 and entering the extrusion box 2. The heating rod is turned on to heat the consumables. The servo motor 3 drives the rotating shaft 8 to rotate. The rotating shaft 8 drives the stirring blade 9 to rotate, thus mixing and stirring the consumables while heating. When the stirring blade 9 mixes and stirs the consumables, the connecting plate 710 does not extend into the second sleeve 713. When the servo motor 3 drives the stirring blade 9 to rotate, it is difficult to drive the spiral blade 17 to rotate, thus avoiding the spiral blade 17 from spinning idly, saving energy and avoiding waste.

[0046] When the stirring blade 9 completes the mixing of the consumables, the servo motor 3 drives the rotating shaft 8 to stop rotating, and the electric telescopic rod 702 drives the lifting plate 703 to move downwards at the same time. The movement of the lifting plate 703 drives the lifting rod 704 and the baffle 11 to move downwards. The downward movement of the baffle 11 allows the consumables to enter the top surface of the baffle 11 through the gap between the inner wall of the first filter hole 19 and the protrusion 20, and then move along the second filter hole 21 to the bottom of the baffle 11, and enter the extrusion box 2 through the second discharge pipe 12.

[0047] As the baffle 11 moves downward, it can also drive the limiting ring 708 downward, thereby driving the first sleeve 707 downward. The slider 709, in conjunction with the groove, guides the movement of the first sleeve 707. The movement of the first sleeve 707 drives the connecting plate 710 downward, thereby driving the connecting plate 710 into the second sleeve 713. The servo motor 3 controls the rotating shaft 8 to rotate, which in turn drives the connecting plate 710 to rotate. The rotation of the connecting plate 710 drives the insertion rod 711 to rotate. When the insertion rod 711 is aligned with the arc-shaped groove 714, the insertion rod 711 moves outward under the influence of centrifugal force and extends into the arc-shaped groove. Inside 714, the return spring 712 is compressed. When the insert rod 711 rotates and contacts the inner wall of the arc-shaped slide groove 714, it drives the second sleeve 713 to rotate. The rotation of the second sleeve 713 drives the first rotating rod 13 to rotate. The rotation of the first rotating rod 13 drives the first bevel gear 14 to rotate. The rotation of the first bevel gear 14 drives the second bevel gear 15 to rotate. The rotation of the second bevel gear 15 drives the second rotating rod 16 to rotate, thereby driving the spiral blade 17 to rotate. The rotation of the spiral blade 17 can drive the consumable to move inside the extrusion box 2 until the consumable moves into the first discharge pipe 5. Opening the solenoid valve 6 can squeeze the consumable outward.

[0048] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the art.

Claims

1. A filament extrusion device for 3D printing equipment, characterized in that: include: The mixing box (1) is provided with multiple stirring blades (9) inside. The stirring blades (9) can rotate to facilitate mixing and stirring of consumables. The extrusion box (2) is fixedly installed at the bottom of the mixing box (1). The extrusion box (2) is equipped with a spiral blade (17) inside. The spiral blade (17) rotates to extrude the consumables outward. The transmission mechanism (700) is located inside and outside the mixing box (1). The transmission mechanism (700) is used to drive the spiral blade (17) to rotate after the stirring blade (9) has completed the mixing and stirring of the consumables. Baffle (11) is slidably connected to the inner wall of the mixing box (1). Baffle (11) can prevent consumables from entering the extrusion box (2) from the mixing box (1) before the stirring blade (9) completes the mixing.

2. The consumable extrusion device for 3D printing equipment according to claim 1, characterized in that: A servo motor (3) is fixedly installed on the top surface of the mixing box (1). The output end of the servo motor (3) passes through the mixing box (1) to the inside of the mixing box (1) and is rotatably connected to the mixing box (1). A rotating shaft (8) is fixedly installed on the bottom surface of the output end of the servo motor (3). The outer side of the rotating shaft (8) is fixedly connected to the stirring blade (9). A filter plate (10) is fixedly installed on the inner wall of the mixing box (1). The top and bottom surfaces of the mixing box (1) are respectively connected to the feed pipe (4) and the second discharge pipe (12). The other end of the second discharge pipe (12) is connected to the extrusion box (2). The bottom of the extrusion box (2) is connected to the first discharge pipe (5). A solenoid valve (6) is installed on the outer side of the first discharge pipe (5).

3. The consumable extrusion device for 3D printing equipment according to claim 2, characterized in that: A first rotating rod (13) is provided below the rotating shaft (8). The first rotating rod (13) passes through the mixing box (1) to the inside of the extrusion box (2) and is rotatably connected to the mixing box (1) through a bearing. A first bevel gear (14) is fixedly provided on the bottom surface of the first rotating rod (13). A second bevel gear (15) meshes with the outside of the first bevel gear (14). A second rotating rod (16) passes through the inside of the second bevel gear (15). The second rotating rod (16) is fixedly connected to the second bevel gear (15). The left and right ends of the second rotating rod (16) are rotatably connected to the extrusion box (2) through bearings. The outside of the second rotating rod (16) is fixedly connected to the spiral blade (17). A fixing plate (18) is fixedly provided on the inner wall of the extrusion box (2). The second rotating rod (16) passes through the fixing plate (18) and is rotatably connected to the fixing plate (18).

4. The consumable extrusion device for 3D printing equipment according to claim 3, characterized in that: The transmission mechanism (700) includes a support plate (701), an electric telescopic rod (702), a lifting plate (703), a lifting rod (704), a first vertical groove (705), a second vertical groove (706), a first sleeve (707), a limiting ring (708), a slider (709), a connecting plate (710), a plug rod (711), a return spring (712), a second sleeve (713), and an arc-shaped slide groove (714). Symmetrical support plates (701) are fixedly installed on the outside of the mixing box (1). An electric telescopic rod (702) is fixedly installed on the top surface of the support plate (701). A lifting plate (703) is fixedly installed on the top surface of the output end of the electric telescopic rod (702). A lifting rod (704) is fixedly installed on the side of the lifting plate (703). The other side of the lifting rod (704) is fixed to the baffle (11). The mixing box (1) is provided with a symmetrical first vertical groove (705) on the outside and a symmetrical second vertical groove (706) on the inside. The rotating shaft (8) is rotatably connected to a first sleeve (707). A limit ring (708) is fixedly provided on the outside of the first sleeve (707). A symmetrical slider (709) is fixedly provided on the outside of the rotating shaft (8). A connecting plate (710) is fixedly provided on the bottom surface of the first sleeve (707). A symmetrical mounting groove is provided inside the connecting plate (710). A return spring (712) is fixedly provided on the side of the mounting groove that is far apart from each other. A plug rod (711) is fixedly provided on the other end of the return spring (712). A second sleeve (713) is fixedly provided on the top surface of the first rotating rod (13). A symmetrical arc-shaped sliding groove (714) is connected to the inside of the second sleeve (713).

5. The filament extrusion device for 3D printing equipment according to claim 4, characterized in that: The lifting plate (703) is adapted to the first vertical groove (705). The lifting plate (703) is slidably connected to the mixing box (1) through the first vertical groove (705). The first vertical groove (705) is connected to the second vertical groove (706). The lifting rod (704) is slidably connected to the inner walls of the front and rear sides of the second vertical groove (706) on its front and rear sides, respectively. The bottom surface of the baffle (11) is provided with a circular groove adapted to the first sleeve (707). The first sleeve (707) extends into the baffle (11) through the circular groove and is rotatably connected to the baffle (11). The outer side of the circular groove is connected to an annular groove that adapts to the limiting ring (708). The limiting ring (708) is rotatably connected to the baffle (11) through the annular groove. The inner wall of the first sleeve (707) is provided with a sliding groove that adapts to the slider (709). The slider (709) is slidably connected to the first sleeve (707) through the sliding groove. The left and right sides of the connecting plate (710) are provided with slots that connect to the inside of the mounting groove. The slots and the arc-shaped sliding groove (714) are both adapted to the insertion rod (711). The insertion rod (711) is slidably connected to the connecting plate (710) through the slots.

6. The filament extrusion device for 3D printing equipment according to claim 2, characterized in that: The filter plate (10) has a plurality of first filter holes (19) through its top surface, and the baffle (11) has a plurality of second filter holes (21) through its top surface. The baffle (11) has a plurality of protrusions (20) adapted to the first filter holes (19) through its top surface. The filter plate (10) and the baffle (11) have a first through hole and a second through hole adapted to the rotating shaft (8) through their top surfaces, respectively. The rotating shaft (8) passes through the filter plate (10) through the first through hole and is rotatably connected to the filter plate (10). The rotating shaft (8) passes through the baffle (11) through the second through hole and is movably connected to the baffle (11).

Images